Post by: AJP on March 15, 2016, 10:24:57 am
Just to note, this isn't the occasional hiccup/wobble at idle every ten seconds or so (that I've always experienced with a hot engine), more a constant shaking like it's missing with every turn of the crank.
Drives fine under load, in gear etc.
My first thought was pcv, although it had a new one less than a year ago.
Any thoughts?
Post by: Andy on March 15, 2016, 10:58:30 am
Post by: AJP on March 15, 2016, 11:53:45 am
Coil packI always thought a dodgy coil would be more apparent as a misfire at higher revs?
Post by: Nasir on March 15, 2016, 01:28:21 pm
Coil packI always thought a dodgy coil would be more apparent as a misfire at higher revs?
Can happen at the low end. Sounds like it is a coil pack. Remove each one individually, if it gets worse, it's not that one, if it stays the same then you have your answer.
Post by: AJP on March 15, 2016, 03:40:08 pm
Post by: pudding on March 18, 2016, 04:16:30 pm
Post by: AJP on March 18, 2016, 04:37:47 pm
If it's not a complete spark cut from a dodgy coil or worn out plug, and not an injector nozzle issue / lazy injector...... then as a guess, could it be carbon build up preventing the intake valve(s) from closing fully? Quite common as these engines get older. As the engine warms up, the carbon softens and the valves seal up again. Other rpms might smooth it out also.Yeah, it's always done the occasional wobble thing, only when warm, which I put down to carbon buildup like you say.
It's going in for a major soon anyway so it'll be getting new plugs at the very least. I'll keep an eye on it. Might just need a new coilpack.
Post by: Ricky123 on March 22, 2016, 12:05:08 am
With you saying it's always had the occasional wobble I'd say have a look at the injectors, quite common for an injector to cause a mild idle issue on these engines.
Post by: AJP on March 22, 2016, 08:58:25 am
Have you scanned it to see if there's any fault codes?It's in at Statller at the start of April for the clutch so I'm going to ask Steve to scan it while it's there. Kind of hoping it throws something up that explains it, save me scratching my head!
With you saying it's always had the occasional wobble I'd say have a look at the injectors, quite common for an injector to cause a mild idle issue on these engines.
Post by: pudding on March 22, 2016, 11:53:04 am
Post by: AJP on March 22, 2016, 01:27:19 pm
Have you not got VCDS? Pretty much invaluable for any post 2001 VW!Not yet! It's on the ever-expanding list of jobs..
Post by: Nasir on March 22, 2016, 02:51:41 pm
Post by: AJP on March 22, 2016, 02:58:20 pm
Also going to head up and see Pashka at some point to sort out my tunes, but that's a long long way off!
Post by: Nasir on March 23, 2016, 01:20:50 pm
It wouldn't take more than 20 minutes to get down to Sheffield on the M1 if they didn't have constant 50 zones and "smart motorways". I'm led to believe the cameras stay on, so anything over 75ish is risky. So you end up just looking at the speedo and not the road.
Post by: r5gtt on March 23, 2016, 01:29:14 pm
Gosh we have to spell it out for you :slap:
Post by: AJP on March 23, 2016, 03:05:31 pm
I'll invest this year. Got a few big jobs coming up on it so every penny is spoken for at the minute!
Post by: r5gtt on March 23, 2016, 03:15:54 pm
Post by: weregrills on May 05, 2017, 12:08:43 pm
I have very similar symptoms on my Gti usually when the engine is first started.
I have replaced the PCV and recently the exhaust which had some splits, but the wobble is still there, although it goes away when the revs go back down to 800rpm and still drives normally.
Did you ever find and fix the fault?
Thanks
Post by: r5gtt on May 07, 2017, 01:28:36 am
I'm sure it was and injector issue iirc
Post by: AJP on May 07, 2017, 07:22:26 am
@AJP (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11926)Correct. Injector on cyl 4.
I'm sure it was and injector issue iirc
Post by: r5gtt on May 07, 2017, 04:01:36 pm