Cutting out when warm

[jgaynair]

My '84 1.9 petrol van starts well when cold, but I'm finding that when she's warm, whenever you take your foot off the accelerator, she cuts out!? I've replaced the plugs, HT leads, distributor cap and rotar arm, which improved it, but has not resolved it.
Any ideas please.....Help!
John

[kevtherev]

Check autochoke operation
take off the pancake duct from the top of the carb, when cold
the choke flap should be shut
after 10 mins warming up it should be open.

COLD ENGINE


WARMING UP

[kevtherev]

If that is not the problem you may have an air leak.
Vacuum leaks are common and these occur at gasket points and vacuum lines. Determine a vacuum leak by spraying some carb cleaner on the base of the carburetor where it meets the intake manifold and if there is a change in engine sound then there is a vacuum leak there. Also spray between the upper and lower part of the carburetor and listen for change in engine sound. Examine the vacuum lines especially the one to the distributor and ensure the line is not split or punctured. This simple test will solve common idling problems however idling problems could also take on larger proportions. Caution: Ensure you have a fire extinguisher at hand when you spray carb cleaner on a hot engine. There could be a fire incident

[SarahD]

Hi John

Mine's been having exactly the same problem recently.

This is the thread to my tech post and how it seems to be resolved for now. Hope it helps https://club8090.co.uk/forum/viewtopic.php?f=37&t=94151" onclick="window.open(this.href);return false;

[SarahD]

Kev - thanks for the pics there. Just out of interest really which carb is it - obviously a Pierburg but 2E3/2E4? I ask because it looks slightly different to my Pierburg carb so mine must be the other?

Also, if it helps John, the lever which I refered to in my post which seems to be part of the mechanism to operate the flap I can't see in your pic kev. I'm looking at the second pic at the very right (right of the Pierburg lettering) where the black bit is. But anyway that's where the lever thing is on mine and a bit of WD40 was required to loosen it up.

[kevtherev]

That picture is from a pierburg fitted in a golf ..so it may be different but the flap is what I was demonstrating

[ghost123uk]

Also worth checking the vacuum pipe for the brake servo that runs from the left hand side of the inlet manifold to the top left hand side of the bulkhead. These sometimes get leaky and can cause such issues. Tip = if it looks dodgy you can usually find a similar brake servo vac pipe from the many different cars at the beakers (I got one of a Volvo)

[SarahD]

That picture is from a pierburg fitted in a golf

Aaaah! Cheers Kev!

[jgaynair]

Thanks to all for your info. I fear this might be a bit above my capabilities, so may need to take it to a man that can. Any recommendations in the south london area (I'm in croydon)??
John

[SarahD]

John - same fear as I have!!! Honestly though if it's the same as mine, there's 3 screws to take out on the round black cover on the carb that comes from the air filter then all you really need is the WD40 and some carb cleaner or compressed air. I fear any further than that in case gaskets and other parts need replacing (parts are difficult to get hold of here and I'll be waiting days/weeks for delivery). I also seriously lack knowledge! If I can do it so can you!!!

[kevtherev]

That's the spirit Sarah.
Advice is given freely here on 80~90 with it comes the choice of how you use it.
Some use it when visiting the garage and when describing the problem, the mechanic either thinks you know your stuff, or has a better understanding and can address it quicker...or both!
Either way it's win win.

On the other side is having a go yourself.
The rewards are more than just financial.
You become less fearful of problems, more in tune with your camper, and when you do fix a problem the feeling of pride and well being is a rush.

[jgaynair]

Thanks for the info Sarah, Kev and all.

Will have a go as soon as my work calms down - shame you guys aren't local - I'd buy you a drink!