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 Posted: Fri Feb 20, 2015 9:45 am |
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Joined: Jan 14, 2015
Posts: 79
Trade Rating: 0
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My GTI 138 has done 77k and when I start from cold it starts fine first time everytime BUT a minute after starting it idles very lumpily - the car vibrates a fair bit (as if it is running on 3 cylinders) touch the trottle and it runs fine and within another minute or two idleing at tickover it slowly goes. Car goes perfectly runs very sweetly - returning 25mpg in London!!!! does not miss a beat - I have run a bit of fuel cleaner in it and I run it on Optimax (but who knows what its been run on before me!?) but havent made any difference
Plugs were changed less than a 1000 miles ago before I got it - had an oil change - new filter etc etc
Lamba sensor (I think it has two??) injectors?? or engine mounts er Im a bit baffled
Any ideas guys
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Posted: Fri Feb 20, 2015 9:47 am |
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Joined: Oct 16, 2014
Posts: 267
Trade Rating: +1
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Have you got any codes? if so get them read, if it does fire on 3 i would have thought a fault would be stored so could be down to an injector.
Other than an injector, id be looking at the knock sensor - could be an intermittent issue on it?
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Posted: Fri Feb 20, 2015 9:49 am |
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Joined: Jan 14, 2015
Posts: 79
Trade Rating: 0
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Carlos
No I havent got any codes - I will get a reader on it - knock sensor - hmm didnt think about that!!
Thanks
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Posted: Fri Feb 20, 2015 10:27 am |
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Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon
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You may have a list of codes that have been there a while. The first thing to do is note the codes and then clear them: do not act on them. Then start the car from cold and take the car for a drive. re-read the codes.
It wouldn't be first time someone had chased defects due to codes that were no longer relevant!
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| Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm)
Why isn't my daughter an Alfaholic? | |
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Posted: Fri Feb 20, 2015 10:29 am |
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Joined: Feb 24, 2010
Posts: 2596
Trade Rating: +17
Location: North West Wales
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Hydraulic lifters starting to fail. Common problem.
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Posted: Fri Feb 20, 2015 10:31 am |
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Joined: Jan 14, 2015
Posts: 79
Trade Rating: 0
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Hydraulic lifters starting to fail - arghhhhhhhhhhhhh - I hope not
Will investigate
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Posted: Fri Feb 20, 2015 10:37 am |
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Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon
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LeeThr: is there a way for John to detect which is failing to avoid buying a complete set? Obviously there are things like manifold temperature but any other good ways to check this?
Will oil flushing help?
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| Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm)
Why isn't my daughter an Alfaholic? | |
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Posted: Fri Feb 20, 2015 11:49 am |
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Joined: Oct 16, 2014
Posts: 267
Trade Rating: +1
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Just a thought, you mentioned the plugs had been changed some GTI's dont like running on NGK plugs and so a lot of people say to run on Bosch.
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Posted: Fri Feb 20, 2015 12:04 pm |
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Joined: Jan 14, 2015
Posts: 79
Trade Rating: 0
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Hydralic tappets - its odd its onlyvon a cold startup and no noise - going to check plugs as well and get a readrr to check fault codes - if its the tappets are they just blocked or dirty or do they need replacing or will a good hard drive imprive them
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Posted: Fri Feb 20, 2015 1:11 pm |
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Joined: Jan 14, 2015
Posts: 79
Trade Rating: 0
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sorry for the poor spelling and grammer - im not drunk (i wish) samsung auto spell gone a bit odd
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Posted: Fri Feb 20, 2015 1:42 pm |
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Joined: Feb 24, 2010
Posts: 2596
Trade Rating: +17
Location: North West Wales
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Depending upon how bad they are, you may be able to pin point the direction by the noise. I know I have 1 if not 2 failing on cylinder 4 on the exhaust cam. can here a distinctive tapping from the rocker cover.
First thing to try though would be an oil change. See if that cures it.
On a side note though, at that millage the cambelt should have been done or at the very least somewhere in the pipeline very soon. and if it hasn't been done, it could work out in your favour as the belt would need to come off to replace the tappets anyway so both jobs could be tackled in one go reducing labour costs (if your using a garage) or saves your sanity if doing it yourself. Euro car parts do sell the tappets for £9.48 at the moment, although I can't say I know how good the quality is (or is not as may be the case) or genuine peugeot one's are £24.25 each inc vat.
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Posted: Fri Feb 20, 2015 1:59 pm |
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Joined: Jan 14, 2015
Posts: 79
Trade Rating: 0
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Lee - it had a cambelt shortly before i bought it arghh maybe 1500 miles ago john
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Posted: Fri Feb 20, 2015 2:56 pm |
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Joined: Feb 24, 2010
Posts: 2596
Trade Rating: +17
Location: North West Wales
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Try an oil change first then see if that improves it. But if it does come down to tappets the belt will have to be removed.
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Posted: Fri Feb 20, 2015 4:25 pm |
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Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon
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Temp sensor playing up? MAPT or coolant temp sensor?
Live read of data using PP may be needed.
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| Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm)
Why isn't my daughter an Alfaholic? | |
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Posted: Fri Feb 20, 2015 11:37 pm |
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Joined: Sep 21, 2014
Posts: 231
Trade Rating: 0
Location: stoke on trent
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i think all has been covered here but plugs/coils/sensors are worth a look also maybe a good service/give the throttle bodie a clean whilst your at it (very easy job).
but as above defo worth getting a code reader plugged in see if that shows anything up.
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