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Model specific boards => Golf mk4 => Topic started by: Jonnybbad on 15 March 2011, 09:55

Title: Misfire on initial startup
Post by: Jonnybbad on 15 March 2011, 09:55

Hi all



I'm getting a misfire on intial startup it only does it under load if I rev the engine it's not there only last bout a min then it's fine.I've scanned it and it doesn't show any faults or codes


I've had it serviced recently hopeing it would cure this problem but it's still there


Any ideas

Thanks Jon

Title: Re: Misfire on initial startup
Post by: new to vw on 15 March 2011, 11:26

What engine is it bud......
coil packs on properly
plugs gapped correctly
dirty plugs...eg sooted up

just the first things that come to mind :grin: :grin:

Title: Re: Misfire on initial startup
Post by: richw911 on 15 March 2011, 18:15

MAF  :undecided:

Title: Re: Misfire on initial startup
Post by: Jonnybbad on 16 March 2011, 04:55

Sorry it's an AUQ I've had the plugs changed when it was seeviced I'm assuming there gapped right I've also changed the MAF bout 4 mnths ago before this problem



What is causing this it doing my canister in

Title: Re: Misfire on initial startup
Post by: richw911 on 16 March 2011, 19:15

Quote from: Jonnybbad on 16 March 2011, 04:55

Sorry it's an AUQ I've had the plugs changed when it was seeviced I'm assuming there gapped right I've also changed the MAF bout 4 mnths ago before this problem



What is causing this it doing my canister in

Di d you use a genuine MAF?

Title: Re: Misfire on initial startup
Post by: Jonnybbad on 16 March 2011, 19:46

Yeah Bosch 1 from GSF it seems to be getting worse now coughing and spluttering but if you leave it to tick over for a few seconds it's fine

Title: Re: Misfire on initial startup
Post by: richw911 on 16 March 2011, 19:50

Boost leak?

Get a smoke test  :smiley:

Title: Re: Misfire on initial startup
Post by: Wayne on 16 March 2011, 20:56

Could be a coil pack issue  :smiley:

Title: Re: Misfire on initial startup
Post by: Jonnybbad on 16 March 2011, 21:00

Would a boost leak cause a misfire?????

Title: Re: Misfire on initial startup
Post by: Wayne on 16 March 2011, 21:02

Quote from: Jonnybbad on 16 March 2011, 21:00

Would a boost leak cause a misfire?????

Yes it could  :smiley:

Title: Re: Misfire on initial startup
Post by: Jonnybbad on 16 March 2011, 21:19

Oh ok I was just thinking if it was a boost leak it would leak constantly and misfire constantly aswell but it doesn't only just for like a min then clears



Would a coilpack breaking down do this

Title: Re: Misfire on initial startup
Post by: richw911 on 16 March 2011, 21:21

Quote from: Jonnybbad on 16 March 2011, 21:19

Oh ok I was just thinking if it was a boost leak it would leak constantly and misfire constantly aswell but it doesn't only just for like a min then clears



Would a coilpack breaking down do this

Yep  :smiley:

Title: Re: Misfire on initial startup
Post by: Jonnybbad on 16 March 2011, 21:27

Is there a way of testing each coilpack to find out if it is them I know the old fashion way but like I say it only does for like 1 min so gonna be a bit difficult to do that way


Sorry for all the question it doing my cannister in