Coupe to road

1976-1985: 230T, 230E, 230TE, 230CE, 280E, 280TE, 280CE, 240D, 300D, 300CD, 300TD,
mathuisella
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Model you own: w123
Location: Brisbane, North side.

Re: Coupe to road

Post by mathuisella » Thu 11 Oct, 2018 7:01 pm

So, still having issues with this lumpy idle.

So far.

Valve adjustment
new injectors @ 145 BAR
injection pump valves removed, cleaned and put back in.
new filters + fuel


Engine mounts are next on the list. Kinda running out of things to check haha.

https://youtu.be/hCGojkm_QnA

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Tony From West Oz
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Model you own: w202
Location: Bedfordale WA

Re: Coupe to road

Post by Tony From West Oz » Thu 11 Oct, 2018 11:30 pm

Did you notice the wear on the cam follower on one valve (around the middle of the cam) was offset - wearing on one side of the cam follower.
I did mention this as the most likely cause of the lumpy idle when warm and included spare parts to overcome this issue.
Tony
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
500 K
Posts: 526
Joined: Sun 08 Jun, 2014 6:03 am
Model you own: w123
Location: Brisbane, North side.

Re: Coupe to road

Post by mathuisella » Thu 11 Oct, 2018 11:54 pm

Tony From West Oz wrote:
Thu 11 Oct, 2018 11:30 pm
Did you notice the wear on the cam follower on one valve (around the middle of the cam) was offset - wearing on one side of the cam follower.
I did mention this as the most likely cause of the lumpy idle when warm and included spare parts to overcome this issue.
Tony
I saw some wear on a cam lobe, but didn't think it was in the contact area.

I'll take another look with the valve cover off tomorrow :)

Cheers for the reply.

I'll take some good pictures.

mathuisella
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Posts: 526
Joined: Sun 08 Jun, 2014 6:03 am
Model you own: w123
Location: Brisbane, North side.

Re: Coupe to road

Post by mathuisella » Mon 15 Oct, 2018 8:04 pm

Evening all, sorry about the delay in reply with an update, it's been raining so much here i've not had much of a chance for car work.

So Tony suggested looking at the rockers.
20181015_141228 - Copy.jpg
hmm, just now starting to take a look.

It seems the sleeves have been damaged.
20181015_141416 - Copy.jpg
closer examination
20181015_162944.jpg
after filing the excess off, it was time to mock up reinstallation and see what's happening.

So, it seems the rod doesn't have the notch cutout in the right spot for the locking down bolt to pass through and keep it all together and in place...
20181015_171507.jpg
So, rather than trying to wedge it all together, which is possibly the cause of the rough idle due to excess stress on the rocker arms, i decided to cut out the excess material.

Using a hand angle grinder with a sanding disc, i got this as a result, not too bad i think considering by hand with no guides in the shed.
20181015_172530.jpg
after doing this, i went and mocked it all up again.

Perfect :)

So i'll be putting it all together again tomorrow morning.

Also to do, run a small wire through the Fuel hardlines between the injection pump to injectors, as per how things were gummed up before, i'm pretty sure the passageways need a good cleaning out as well.
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Tony From West Oz
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Joined: Mon 20 Jun, 2005 9:04 pm
Model you own: w202
Location: Bedfordale WA

Re: Coupe to road

Post by Tony From West Oz » Mon 15 Oct, 2018 9:53 pm

Hmmmm so it was that way since the engine overhaul.
Was the rod symmetrical, or is there an offset at one end of it causing the offset of the bolt hole at one end?
Was the rod bent at all?, I originally felt that this may have been the cause of the unusual wear on the rocker.
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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