w123 230e cut out, now won't start!!!!

1976-1985: 230T, 230E, 230TE, 230CE, 280E, 280TE, 280CE, 240D, 300D, 300CD, 300TD,
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gez110
C Class
Posts: 34
Joined: Wed 22 Mar, 2017 9:16 pm
Model you own: w123

w123 230e cut out, now won't start!!!!

Post by gez110 » Fri 25 Aug, 2017 7:25 pm

Hey guys,

Driving home from having a set of tyres fitted today. I was slowing towards a roundabout when the engine cut out. It turns over fine, but won't fire. I can hear the fuel pump prime when I turn the key, but it won't start.

I pulled the distributor cap, the rotor arm tip was fairly black, so I cleaned it up along with the pick ups on the cap itself. No difference.

I'll check for spark and fuel in the morning, any other ideas?

Cheers

Steve

gez110
C Class
Posts: 34
Joined: Wed 22 Mar, 2017 9:16 pm
Model you own: w123

Re: w123 230e cut out, now won't start!!!!

Post by gez110 » Fri 25 Aug, 2017 10:20 pm

Sorted. I discovered a piece of crud had got stuck in the metering flap. Thankfully it hadn't been sucked into the metering head!

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Simon Dove
170s
Posts: 181
Joined: Tue 20 Dec, 2005 10:49 pm
Model you own: w126
Location: Kensington Grove, QLD

Re: w123 230e cut out, now won't start!!!!

Post by Simon Dove » Sat 26 Aug, 2017 7:46 am

Good result. Well done.
71 W109 300SEL 3.5
78 W123 300D
88 W126 420SEL

gez110
C Class
Posts: 34
Joined: Wed 22 Mar, 2017 9:16 pm
Model you own: w123

Re: w123 230e cut out, now won't start!!!!

Post by gez110 » Sat 26 Aug, 2017 9:47 am

Huge relief, not a great end to its first outing in several months! All good now. Just need a replacement steering box.

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Simon Dove
170s
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Joined: Tue 20 Dec, 2005 10:49 pm
Model you own: w126
Location: Kensington Grove, QLD

Re: w123 230e cut out, now won't start!!!!

Post by Simon Dove » Sun 27 Aug, 2017 9:06 pm

What's wrong with the steering box? Reason I ask is if it's just leaking and/or excessive play the forum sponsor sells kits to rebuild with all new seals. The excessive play can be adjusted.
71 W109 300SEL 3.5
78 W123 300D
88 W126 420SEL

gez110
C Class
Posts: 34
Joined: Wed 22 Mar, 2017 9:16 pm
Model you own: w123

Re: w123 230e cut out, now won't start!!!!

Post by gez110 » Sun 27 Aug, 2017 10:30 pm

Excessive play is the issue, I have to wind the adjuster a long way out for it to reduce the free play (to about 25mm). It does have a slight leak, but I'm thinking it may be excessively worn.

The other issue is, I can't figure out how to get an allen key/socket into the adjuster, as it sits directly under the exhaust manifold, with barely 10mm clearance. How do you adjust yours?

Cheers

Steve

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goonie123
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Joined: Wed 09 Aug, 2017 1:56 pm
Model you own: w123

Re: w123 230e cut out, now won't start!!!!

Post by goonie123 » Fri 27 Oct, 2017 2:19 pm

Can someone please enlighten me to where this "metering flap" is?

My 230e started misfiring this morning and eventually stalled and wouldn't start again.

Came back 2 hours later and it started.

Hoping it's something as simple as this.

Cheers

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

Re: w123 230e cut out, now won't start!!!!

Post by mathuisella » Sat 28 Oct, 2017 2:12 pm

metering flap would be the " butterfly" valve like flap in the air intake side of things.

230ew123
Adenauer
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Model you own: w123
Location: eaglemont + cranbourne sth

Re: w123 230e cut out, now won't start!!!!

Post by 230ew123 » Tue 07 Nov, 2017 10:57 am

how did you go with your starting issues?

when I started with my 230e, starter motor first(gen mec put in a v8 high torque with a shorter body which is much easier to access), then there was the fuel pump (replaced), then the rotor in the distributor ( you know it is no good if it is burnt and you get a backfire, I keep a couple spare as I find they are the first to go)

i followed up with new leads, sparks, distributor cap (I found bosch the best quality so far, some of the other brands are crappily made if you have a good look),
then ignition coil as I figured everything was 30 years old..
I keep a spare control module, but have not needed it as of yet

fresh battery and it's charge also makes a diff, night time driving with accessories and head lights in the city with long periods at traffic lights is going to drain your battery, I slip her into park to keep revs and charge at traffic lights, as I watch on my cigarette plug voltmeter

also replaced the regulator within the alternator, well worth doing and nice to tidy up the alternator whilst at it
fresh tight belts are good too
only use premium petrol

she starts no worries every first pop

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