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        General >> Problems >> Cosworth lumpy idle
        
(Message started by: bobs505050 on Jun 23^rd, 2007, 8:04am)

Title: Cosworth lumpy idle
Post by bobs505050 on Jun 23^rd, 2007, 8:04am

Hi all my p reg cossie wont idle smooth as soon as i accelerate problem goes but if i cruise at any speed it feels like engine is holding back bit like a miss fire but put foot down and it goes like stink i had it on a emission test and the readings all over the shop i put in new plugs ht leads ok cleaned idle valve and maf compressions all good its not leaking air as far as i can tell any ideas most welcome please thanks bob

Title: Re: Cosworth lumpy idle
Post by martin_rowe on Jun 23^rd, 2007, 8:34am

air / vacuum leak still fav, check EGR system & plactic 'T's in the centre of the V, check llambda sensors also.