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Model specific boards => Golf mk4 => Topic started by: craigy on 28 November 2009, 10:36

Title: Having problems starting my 18 20v T ????
Post by: craigy on 28 November 2009, 10:36

Hi all i was wondering if anyone had any advice for me a few months ago mt golf burnt a valve i rebuilt it and ever since it will not start on 1st turn over then it will usually backfire then will start 80% of the time on the 2nd crank over( wen the fuel pump seems to build pressure) i have changed the fuel pump even.Eventually when it fires up it starts very slow and lazy. I did make a mistake wen building it again by mixing the the petrol pipes (timing belt side) my inlet manifold/intercooler was filled up with petrol. I was told it could be the timung so i striped it and timed it by the haynes manual 100% but i still have the same prob it has been pluged in to a few computers its saying camshaft sensor circuit input low so i have changed the camshaft sensor aswell but still the same the fault code is (PO3011) on a snap on computer as soon as the car fires up it seems to be running 100% it also seems to be harder to start wen cold no one seems to have a clue wot it could be


cheers any help id be gratefull

Title: Re: Having problems starting my 18 20v T ????
Post by: RnP on 28 November 2009, 16:18

sounds like its fuel pressure related mate, you got a fpr gauge on there??

Title: Re: Having problems starting my 18 20v T ????
Post by: richw911 on 29 November 2009, 12:59

Fuel pump relay  :undecided:

Title: Re: Having problems starting my 18 20v T ????
Post by: craigy on 30 November 2009, 19:46

no mate i dnt have a fuel pressure guage also wer could i find the fuel pressure relay???

Title: Re: Having problems starting my 18 20v T ????
Post by: richw911 on 30 November 2009, 22:17

Quote from: craigy on 30 November 2009, 19:46

no mate i dnt have a fuel pressure guage also wer could i find the fuel pressure relay???

Underneath the steering wheel, behind all of the trim  :smiley:

(http://i163.photobucket.com/albums/t318/richw911/RELAYS3.jpg)

Title: Re: Having problems starting my 18 20v T ????
Post by: craigy on 01 December 2009, 22:50

ok thanks mate very helpfull i cant just understand the tge problem code its givun me about the camshafrt position sensor ???

Title: Re: Having problems starting my 18 20v T ????
Post by: king nu2 turbo on 10 December 2009, 19:55

hi i had the same problem with my golf gti t, turned out to be the timing, on the chain. Take ur rocker cover off and make sure the timing marks line up on the cams, hope it helps

Title: Re: Having problems starting my 18 20v T ????
Post by: dai-cymru on 10 December 2009, 20:14

Quote from: craigy on 01 December 2009, 22:50

ok thanks mate very helpfull i cant just understand the tge problem code its givun me about the camshafrt position sensor ???

the cam sensor will cause running probs, sort that out first  :smiley:

Title: Re: Having problems starting my 18 20v T ????
Post by: mikemk4gti on 10 December 2009, 21:50

sounds like timing tbh, as even with a new sensor it still throws up the same code. and it would explain poor starting.