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Lumpy idle and black smoke from valver!



  MK1 Clio 16v
Was driving into Leicester the other day in my valver to have my de-cat pipe fitted, and all of a sudden the car went really unresponsive, jerky, and when i reached traffic and dipped the clutch it just cut out. Started the engine again and it died once more. Started it a third time and gave it some revs and i managed to pull over in a layby. Sat there with the engine running and wondered what the hell was going on and it had a really lumpy idle and the exhaust gases looked really dirty.

I gave it a good rev and it was just jet black smoke piling out of the exhaust.

Managed to drive it all the way home ok, but it was really uncomfortable to drive and jolted all over the place.

It wasn't misfiring, i've had all the leads/plugs checked.

Thought it could be dodgy petrol but i've driven around and emptied the tank and put fresh petrol in and it's still just as bad. The smell it makes is absolutely horrible, it smells like a steam train.

Does anyone have any idea what could be wrong??
 
  MK1 Clio 16v
Cheers dan!

Had a look with a mate of mine today and it turns out it was the little pipe from the rear of the engine to the map sensor! It had popped off! Connected it back up again and now it's running very smoothly!

Thanks :)
 
  Looking for a ph-quick...
something that simple caused such a big issue! vacuum hose from the map sensor Dan, popped it back on, instantly smooth!

Amir
 


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