Fuel starving woes. 300D

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mathuisella
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Fuel starving woes. 300D

Post by mathuisella » Thu 30 Aug, 2018 5:03 pm

Hey everyone, well my red 300D is still my daily driver so to speak while i work on the coupe. Lately it's been having trouble getting fuel to the engine...

whhat i have done so far


Drained fuel tank and cleaned strainer, it was like this...
39454499_1949645968667847_2816347091213746176_n.jpg
Changed the 2 other fuel filters in the engine bay.... ( spin on filter and inline filter before lift pump )

Today i changed the lift pump itself for another one.

took it for a test drive.

anything that requires a bit more than a touch over idle in terms of fuel needs it starves.... eg: acceleration or going up a slight hill.

a neighbour said it might be the tank breather > ?

Open to suggestions :)
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mathuisella
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Re: Fuel starving woes. 300D

Post by mathuisella » Thu 30 Aug, 2018 5:13 pm

Oh, and i cleaned the tank filter in the ultrasonic cleaner, came up very nice :)
39468420_742564259426820_5707497660726902784_n.jpg
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Bartman4800
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Re: Fuel starving woes. 300D

Post by Bartman4800 » Thu 30 Aug, 2018 6:55 pm

Did you check whether you pull the pump cable against the bump-stop if you put the loud pedal to the floor?
1963 220 Sb Sedan "Kermit" (Australian Assembly)
1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
1981 Subaru Brumby 1.8 with Weber and 5-speed box "little utie" - Sold to another enthusiast!
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2002 VW Passat V6 30V Station Wagon (SOLD - This car into a money pit)
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mathuisella
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Re: Fuel starving woes. 300D

Post by mathuisella » Thu 30 Aug, 2018 7:22 pm

Bartman4800 wrote:
Thu 30 Aug, 2018 6:55 pm
Did you check whether you pull the pump cable against the bump-stop if you put the loud pedal to the floor?
umm, i don't understand ?

when trying to go faster, the car stutters like it wants to go faster but cannot get the fuel to do so :'(

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Re: Fuel starving woes. 300D

Post by 3DB » Thu 30 Aug, 2018 11:27 pm

Could you have an air leak somewhere? I have persistent air leaks in my Rodeo that produce similar symptoms. Mine are a result of my CAV filter but are easily rectified with a pump like this between the tank and main filter before the IP. I have this controlled by a switch on the dash. I only operate it for about 10 - 20 seconds on startup to prime the system when necessary. Some days I need it, some I don’t. Ideally I would fix all the air leaks but that has proven to be a lot of work when biodiesel and rubber hoses are involved. Not ideal but works well. My 300D has no issues though.


If your rubber fuel hoses are hard or perished try replacing those first and use good hose clamps.

Also try bleeding by opening the fuel line slightly at #1 injector and cranking.

https://rover.ebay.com/rover/0/0/0?mpre ... 3136649425
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Re: Fuel starving woes. 300D

Post by John Green » Fri 31 Aug, 2018 7:30 am

The black crap you have found on the tank strainer is going to be though the entire system. It is an algae that can grow in diesel, especially low mileage examples and especially in colder climates. This means it is in the injection pump and in the injectors. I would start with some fuel treatment to kill the algae, google it there are various brands that you can get.
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Bartman4800
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Re: Fuel starving woes. 300D

Post by Bartman4800 » Fri 31 Aug, 2018 9:54 am

mathuisella wrote:
Thu 30 Aug, 2018 7:22 pm
Bartman4800 wrote:
Thu 30 Aug, 2018 6:55 pm
Did you check whether you pull the pump cable against the bump-stop if you put the loud pedal to the floor?
umm, i don't understand ?

when trying to go faster, the car stutters like it wants to go faster but cannot get the fuel to do so :'(
You are right, that is a lame comment. Should read a bit better next time...

Air in the system sounds plausible, as well as algae...
1963 220 Sb Sedan "Kermit" (Australian Assembly)
1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
1981 Subaru Brumby 1.8 with Weber and 5-speed box "little utie" - Sold to another enthusiast!
2006 Ford Focus "daily driver"
2002 VW Passat V6 30V Station Wagon (SOLD - This car into a money pit)
2011 Kia Sportage "Missus commuter Bus"
2002 Mitsubishi Rosa Bus (converting it to a motor home)

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Re: Fuel starving woes. 300D

Post by mathuisella » Fri 31 Aug, 2018 11:37 am

Tomorrow i'm going to make a small " fuel tank" inside the bonnet and test drive to see if it's my tank / filters/ lines and narrow it down to engine bay, or fuel storage/transfer(flow).

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Re: Fuel starving woes. 300D

Post by mathuisella » Sat 01 Sep, 2018 12:10 pm

https://youtu.be/8bvzaR_4edQ

So, it tests well, even took it up some hills for a bit of hard acceleration where it would stutter and fuel starve before. Worked well.


https://youtu.be/8bvzaR_4edQ


So now, draining the fuel tank


1st, taking the fuel sender out to check it's state and give the tank a breathing hole to let it drain better/quicker.

46.00mm socket, with flattened end to get rid of the bevel, for max contact area to avoid slipping/stripping.
40477612_324574594964557_8742742068033486848_n.jpg
now taking out the tank sender, and placing it in an appropriate container after letting it drain for a while...

40567211_288912308555806_5573830032138174464_n.jpg

40449319_444345712727411_1764405975747395584_n.jpg

time to inspect


Looks like there was some gunk.
40432685_247385085980315_1206474695906426880_n.jpg



not the worst i've seen, so doesn't look like an over abundance of gunk is the problem...
40567814_473673653113964_8016731739894317056_n.jpg

deciding to drain the tank anyway.

See it coming out with ease, nice and clean/clear with no obstruction. note: the hole where the tank sender is vacant, so it's equalising pressure nicely. I suspect now that it is it fuel tank vent line that is clogged.
40485046_1926717944295429_8272779857377624064_n.jpg
currently making the post while it drains.

contemplating taking the whole tank out and giving it an internal clean.
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mathuisella
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Re: Fuel starving woes. 300D

Post by mathuisella » Sat 01 Sep, 2018 7:35 pm

Tank filter didn't clog up, still clean :)
40477326_589737061424250_4761860383155683328_n.jpg
here's the return and vent to atmosphere lines
40479099_1586629848109122_1836538624338821120_n.jpg

got them off
40562170_359660921240831_1101661688404377600_n.jpg
and now to blow 90PSI from the air compressor through the lines
40495693_525804474546205_3624341945532284928_n.jpg
reassembled it all and still get the same fuel starving issue :'( not sure what it is at this point.

i think maybe it's sucking in air from somewhere. instead of fuel.

adding in clean fuel sender
40461412_302827657172021_561897656369020928_n.jpg
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mathuisella
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Re: Fuel starving woes. 300D

Post by mathuisella » Sat 01 Sep, 2018 9:51 pm

John Green wrote:
Fri 31 Aug, 2018 7:30 am
The black crap you have found on the tank strainer is going to be though the entire system. It is an algae that can grow in diesel, especially low mileage examples and especially in colder climates. This means it is in the injection pump and in the injectors. I would start with some fuel treatment to kill the algae, google it there are various brands that you can get.
I use this stuff.

https://www.pittsburghpower.com/store/p ... tment.html

Haven't put any in the tank in quite a while as i've been running on 100% diesel for months.

I'll be putting some more in tomorrow :)

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Re: Fuel starving woes. 300D

Post by mathuisella » Mon 03 Sep, 2018 1:10 am

Okay, so update.

put 90PSI through all fuel lines.

Changed all filters.

changed lift pump to another bosche used one.

So, the lift pump ( primer brand new monark steel body ) was unable to get a dribble for every 10th press of the plunger... However, when a makeshift fuel tank is made from a plastic bottle and put inside the engine bay and strapped in nicely out of the way, the lift pump doesn't have any trouble getting a good flow... I'm thinking both the original and the used lift pumps are worn and need a rebuild.

I saw this video, tempted to get myself a boost pump...

https://www.youtube.com/watch?v=mRdn0HQgLAI&

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Re: Fuel starving woes. 300D

Post by mathuisella » Mon 03 Sep, 2018 9:28 am

So, i think I'm just going to get the "wearing" parts from Mercedes. The pump lasted 33 years, so might get another 20 to 30 years out of it after rebuild rather than screwing around with aftermarket stuff.

Also, i like to have it able to be clutch started if ever i have the need without needing power from a dead car batter unable to run the pump to get fuel to the engine...

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Re: Fuel starving woes. 300D

Post by Bartman4800 » Mon 03 Sep, 2018 10:03 am

Hmm,

I know with the tank in the engine bay you do not have to suck any "head" (I am dead serious here)

But I still suspect you have an air leak somewhere between the suction pipe in the tank and your prime pump...
W123 tanks are mounted high, so there should not be any head height to overcome.

Did you check your tank ventilation is fine?

Why a boost pump, if the engineers really knew what they were doing?
The prime pump is only needed to bleed the system free of air.

I think you have to keep digging before you start throwing other options at it.


Bart
1963 220 Sb Sedan "Kermit" (Australian Assembly)
1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
1981 Subaru Brumby 1.8 with Weber and 5-speed box "little utie" - Sold to another enthusiast!
2006 Ford Focus "daily driver"
2002 VW Passat V6 30V Station Wagon (SOLD - This car into a money pit)
2011 Kia Sportage "Missus commuter Bus"
2002 Mitsubishi Rosa Bus (converting it to a motor home)

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Re: Fuel starving woes. 300D

Post by mathuisella » Mon 03 Sep, 2018 5:41 pm

Thank you for the reply

I too thought an air leak.

I put in brand new fuel lines inside the engine bay with brand new clamps as i was thinking an air leak as well.

The vent line, I put a length of vacuum line up from the venting end and got 3/4 of the way through with it until the last 90 degree bend before it wouldn't move any further. I then put 90PSI with the air compressor through it, so it should be clear.

With the fuel lines from the tank they also had 90PSI put through them.

So it's quite a head scratcher...
40495693_525804474546205_3624341945532284928_n.jpg
40528726_272214660281253_5327684614590824448_n - Copy.jpg
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Re: Fuel starving woes. 300D

Post by Bartman4800 » Mon 03 Sep, 2018 6:58 pm

IF you have transparent hoses in there now, you should be able to see some air bubbles floating past.

Could there be a small crack or pinhole in a steel line/connection? At the tank?

Bart
1963 220 Sb Sedan "Kermit" (Australian Assembly)
1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
1981 Subaru Brumby 1.8 with Weber and 5-speed box "little utie" - Sold to another enthusiast!
2006 Ford Focus "daily driver"
2002 VW Passat V6 30V Station Wagon (SOLD - This car into a money pit)
2011 Kia Sportage "Missus commuter Bus"
2002 Mitsubishi Rosa Bus (converting it to a motor home)

mathuisella
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Re: Fuel starving woes. 300D

Post by mathuisella » Mon 03 Sep, 2018 9:02 pm

Bartman4800 wrote:
Mon 03 Sep, 2018 6:58 pm
IF you have transparent hoses in there now, you should be able to see some air bubbles floating past.

Could there be a small crack or pinhole in a steel line/connection? At the tank?

Bart
the clear line you see in the picture is from the air compressor as i was preparing to put 90psi through all the lines.

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Re: Fuel starving woes. 300D

Post by Tony From West Oz » Mon 03 Sep, 2018 10:44 pm

Do you have a clear prefilter in the fuel line before the lift pump?
When priming / cranking / running, does it have any air bubbles coming into it?
Put some clear pipe in the return line, any bubbles there?
If no bubbles, you have no air leaks.
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'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (SOLD)
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Re: Fuel starving woes. 300D

Post by mathuisella » Tue 04 Sep, 2018 8:20 pm

Tony From West Oz wrote:
Mon 03 Sep, 2018 10:44 pm
Do you have a clear prefilter in the fuel line before the lift pump?
When priming / cranking / running, does it have any air bubbles coming into it?
Put some clear pipe in the return line, any bubbles there?
If no bubbles, you have no air leaks.
the filter before the lift pump is a white colour, you can tell when fuel is in it, but not transparent enough to see bubbles.

I got some clear 8mm line today for testing purposes. Let's see how it goes.

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Re: Fuel starving woes. 300D

Post by mathuisella » Sat 08 Sep, 2018 7:47 pm

So, today's update.

Got 6mm fuel line and 8mm line in clear ( not proper fuel rated though ,so only for testing purposes. )

New clamps ( the ones that aren't worm drive that cut into hoses...)

and a new filter that i can see into.
41286842_2111296955864650_7135737297835655168_n.jpg
After doing about 10km, the filter has had it, the filter is completely gunked up, i'm certain i've gotten a bad load of fuel in the months gone by and the algae has made a mess of it. However, the return and everything post filter is 100% clean diesel, so the filters are doing their job nicely.


Time to kill the algae and wash it from the tank, lines and everything in regards to fuel in the car.
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Re: Fuel starving woes. 300D

Post by 3DB » Tue 11 Sep, 2018 7:49 pm

Mate, you have been through the wringer on this. I suspect I am about to follow in your footsteps. My prefilter was knackered after about 5 months and with a new one in that still looks pretty clean another 5 months later, I think it is time to also look at the in-tank screen as I'm getting some rough idling and hesitation when I put the boot in.

https://instagram.com/p/BiIzfutFfE7/

I spoke my local Mercedes guru and he said I could consider completely removing the in-tank screen and installing a separator/filter before the standard OEM filter, similar to more modern diesels.

Something like this:

https://www.ebay.com.au/itm/Universal-D ... SwknJXyLqg

I have a similar one on my Rodeo with a built-in hand primer, but the primer is unnecessary on the Merc as there is one on the IP, as you know.
3DB
1976 W123 300D (weekend warrior on biodiesel)
1995 Holden Rodeo 2.8 factory turbo diesel ute (daily driver...also on biodiesel)
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Re: Fuel starving woes. 300D

Post by Tony From West Oz » Tue 11 Sep, 2018 9:40 pm

The prefilter you need to buy is a MANN WK31/5. They are about $7 each from a filter specialist. They are clear cased, so you can see when they are getting blocked, and they can be washed out with petrol / diesel / brake cleaner, etc, dried and re-used with no degradation of filtering performance.
prefilter.png
AFAIK, this is the Original Equipment for the OM617 all 300D, CD and Turbodiesel.
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Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (SOLD)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

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Re: Fuel starving woes. 300D

Post by mathuisella » Wed 12 Sep, 2018 12:30 am

Tony From West Oz wrote:
Tue 11 Sep, 2018 9:40 pm
The prefilter you need to buy is a MANN WK31/5. They are about $7 each from a filter specialist. They are clear cased, so you can see when they are getting blocked, and they can be washed out with petrol / diesel / brake cleaner, etc, dried and re-used with no degradation of filtering performance.
prefilter.png

AFAIK, this is the Original Equipment for the OM617 all 300D, CD and Turbodiesel.

My experiences with those filters in your post, they do okay for bits of grit that are too small for the tank filter, but they do not block any gunk/algae or sediment expecially if you use any alternative fuel... This filter doesn't stop anything going into the lift pump and then into your main filter.


The prefilters i use cost $6, are clear and have hard outer walls so they wont depress when put before the lift pump.... They stop algae, sludge, sediment and smaller grit from getting anywhere into the lift pump or injection pump. They may clog up ( but hey they are sacrificial in saving more expensive stuff ) , but have a spare couple in the glove box so you can get home and sort out the problem without risking gunk and/or algae from getting into your injectors, pumps ect:


no car work from me during the weeks whilst at uni, so next update over the weekend


3db, i have a water seperator somewhere, if i find it, i'll give it a go, however i won't remove my tank screen, it does a nice job

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Re: Fuel starving woes. 300D

Post by mathuisella » Thu 13 Sep, 2018 12:13 am

hmm....

a touch of work...
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20180912_220439 - Copy.jpg
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Re: Fuel starving woes. 300D

Post by mathuisella » Thu 13 Sep, 2018 2:41 pm

https://www.youtube.com/watch?v=EycraNN0S2Y


flushed all the gunk out of it pretty well.

Next step is to get a physical scrub in there to finish it off.

Going to use a chain.


https://www.youtube.com/watch?v=EycraNN0S2Y

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Re: Fuel starving woes. 300D

Post by 3DB » Thu 13 Sep, 2018 9:11 pm

some nice chunks in there!
3DB
1976 W123 300D (weekend warrior on biodiesel)
1995 Holden Rodeo 2.8 factory turbo diesel ute (daily driver...also on biodiesel)
(@thirddegreeburns on Instagram)

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Re: Fuel starving woes. 300D

Post by mathuisella » Thu 13 Sep, 2018 9:43 pm

yeah 36 years of use will do that i guess.

today i put in a chain ( withouht scratchy ends as to not scratch away any internal coating. )

a few good scrubs by swashing around the chain inside the tank against all the interior walls and flushed it out again


https://www.youtube.com/watch?v=TRHCm8PYx2w

my temporary fuel tank :)

I like that it's a peanut oil tin ^_^

( 3 litres )
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Re: Fuel starving woes. 300D

Post by Tony From West Oz » Thu 13 Sep, 2018 10:16 pm

mathuisella wrote:
Wed 12 Sep, 2018 12:30 am
Tony From West Oz wrote:
Tue 11 Sep, 2018 9:40 pm
The prefilter you need to buy is a MANN WK31/5. They are about $7 each from a filter specialist. They are clear cased, so you can see when they are getting blocked, and they can be washed out with petrol / diesel / brake cleaner, etc, dried and re-used with no degradation of filtering performance.
prefilter.png

AFAIK, this is the Original Equipment for the OM617 all 300D, CD and Turbodiesel.

My experiences with those filters in your post, they do okay for bits of grit that are too small for the tank filter, but they do not block any gunk/algae or sediment expecially if you use any alternative fuel... This filter doesn't stop anything going into the lift pump and then into your main filter.
These filters are specifically designed to stop anything which could damage the lift pump. The lift pump sends the fuel to the main filter which is specifically designed to stop stuff which could cause IP or Injector issues. I have had the specified filter block up completely, starving the engine of fuel. I removed the filter and simply blew it back with compressed air, dislodging most of the contaminants. I was able to refit it and continue my journey home. I replaced it the following day, washed it out with petrol and blew it dry. From then on, I have carried one of these filters in a ziplock bag in any 300D I have had in case I had a similar issue. I have used it twice (both times when starting to use biofuels for the first time in a 'new to me' 300D)


The prefilters i use cost $6, are clear and have hard outer walls so they wont depress when put before the lift pump.... They stop algae, sludge, sediment and smaller grit from getting anywhere into the lift pump or injection pump. They may clog up ( but hey they are sacrificial in saving more expensive stuff ) , but have a spare couple in the glove box so you can get home and sort out the problem without risking gunk and/or algae from getting into your injectors, pumps ect:
I have had one of those pleated paper filters come apart, causing unfiltered fuel to enter the lift pump. Fortunately no significant damage occurred at that time.

no car work from me during the weeks whilst at uni, so next update over the weekend


3db, i have a water seperator somewhere, if i find it, i'll give it a go, however i won't remove my tank screen, it does a nice job
Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (SOLD)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

mathuisella
560 SEL
Posts: 564
Joined: Sun 08 Jun, 2014 6:03 am
Model you own: w123
Location: Brisbane, North side.

Re: Fuel starving woes. 300D

Post by mathuisella » Sat 15 Sep, 2018 2:00 pm

I've never had a paper filter come apart ' shrugs' maybe have one of the MANN WK31/5 behind the paper filter to catch it just in case :)

So, i've upgraded the fuel tank :P
41745275_532518823860624_6514133742011809792_n.jpg
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Tony From West Oz
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Model you own: w202
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Re: Fuel starving woes. 300D

Post by Tony From West Oz » Sat 15 Sep, 2018 4:56 pm

Why have you got a non return valve between the lift pump and the main filter? The lift pump has 2 NRVs in it.
Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (SOLD)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

mathuisella
560 SEL
Posts: 564
Joined: Sun 08 Jun, 2014 6:03 am
Model you own: w123
Location: Brisbane, North side.

Re: Fuel starving woes. 300D

Post by mathuisella » Sat 15 Sep, 2018 7:55 pm

Tony From West Oz wrote:
Sat 15 Sep, 2018 4:56 pm
Why have you got a non return valve between the lift pump and the main filter? The lift pump has 2 NRVs in it.
Just there from when i was troubleshooting what's been going on.

They will go when i get the fuel tank cleaned up, dried and back into the car :)

mathuisella
560 SEL
Posts: 564
Joined: Sun 08 Jun, 2014 6:03 am
Model you own: w123
Location: Brisbane, North side.

Re: Fuel starving woes. 300D

Post by mathuisella » Sun 16 Sep, 2018 6:25 pm

after half dozen rinses and swishes through the tank, lots of shaking and internal scrubbing and pressure washing as well as degreasing..

this is the chain
41793147_471354529938758_4160388644718247936_n - Copy.jpg
now that it's nice and clean inside time to get it all bone dry after draining the water out.
41817514_2688556004503384_3950919499099668480_n - Copy.jpg
also time to clean the lines
41788404_324268064993764_1129327329399537664_n - Copy.jpg
tank to be reinstalled soon.
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3DB
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Model you own: w123
Location: Sydney

Re: Fuel starving woes. 300D

Post by 3DB » Sun 16 Sep, 2018 8:41 pm

Can I ask where you got those nice new clear hoses coming into and out of the lift pump? They look a lot nicer than my crusty yellow ones.
3DB
1976 W123 300D (weekend warrior on biodiesel)
1995 Holden Rodeo 2.8 factory turbo diesel ute (daily driver...also on biodiesel)
(@thirddegreeburns on Instagram)

mathuisella
560 SEL
Posts: 564
Joined: Sun 08 Jun, 2014 6:03 am
Model you own: w123
Location: Brisbane, North side.

Re: Fuel starving woes. 300D

Post by mathuisella » Sun 16 Sep, 2018 9:46 pm

3DB wrote:
Sun 16 Sep, 2018 8:41 pm
Can I ask where you got those nice new clear hoses coming into and out of the lift pump? They look a lot nicer than my crusty yellow ones.

They are really nice, however they are just simple vinyl tubing from clark rubber. Only a temporary thing so i could see what exactly is going on.

I've yet to find clear fuel line for diesel :'(

mathuisella
560 SEL
Posts: 564
Joined: Sun 08 Jun, 2014 6:03 am
Model you own: w123
Location: Brisbane, North side.

Re: Fuel starving woes. 300D

Post by mathuisella » Fri 19 Oct, 2018 12:35 am

Forgot to update this, sorry.

once i cleaned tank, cleaned lines and changed all filters the system was good as new.

running really well now. not a spec of crud in the fuel lines or the filters.

edit: i also put 2 types of algae/bug killer through the system enough for 1000 litres.

Nulon's stuff as well as one from the USA called Kill'em, the kill'em is awesome.

https://www.youtube.com/watch?v=3YuQoACvfm0

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