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        General >> Problems >> Exhaust hole, can it stop a car running
        
(Message started by: dogma on Aug 2^nd, 2007, 3:29pm)

Title: Exhaust hole, can it stop a car running
Post by dogma on Aug 2^nd, 2007, 3:29pm

Hi all, my recent subject of the nightmare car has now found that it still wont start, johny can kindly helped me out one night and we come to the conclusion that the exhaust is blowing badly somewhere near the manifold, although no cracks or splits are visible. The question is, should you accept it, is can a blowing exhaust make a car cut out when you attempt to start it
jim

Title: Re: Exhaust hole, can it stop a car running
Post by Highlander on Aug 2^nd, 2007, 3:36pm

Is it possibly the manifold thats cracked? (common problem)
it shouldn't stop the car starting, the cat may be blocked?

Title: Re: Exhaust hole, can it stop a car running
Post by TiberiuS on Aug 2^nd, 2007, 7:19pm

I'm still thinking bad intake air leak :-/

Might be worth having a look at the EGR valve, I remember there's a way to plug it up? Might be worth a try.

Popping sounds like lean miss or bad timing :-/

AFAIK, cracked exhaust header would lean the mixture and kill economy, maybe make it run rough, loss of power. But stop it running and make it backfire?

If it started after you re-ran the wiring, you didn't mix up the loom to the coilpacks or something did you?

Timing or mixture...I'd bet my life on it.

Title: Re: Exhaust hole, can it stop a car running
Post by dogma on Aug 2^nd, 2007, 7:40pm

When i rewired it tho i did it a wire at a time so i wouldnt mix any up by mistake. If you remember i had a simialr problem and my dad did when he had the car. When it had been sat all day or night it would start first time and then cut out, it would turn over for ages till it eventually start. Sometimes itwould still start on then die but would go if you gave it some throttle for a few sec, then happilly tick over. Its doing the same now but just wont start at all. I didnt actually touch the wiring for the coild packs tho as they had been repaired by a shop about 6 months ago and are still fine. Im loosing my hair now in a big way
jim