[Mk2] [Turbo] jerky jerky......

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justarn
Posts: 82
Joined: Tue Dec 02, 2008 5:43 pm
Location: maidstone

[Mk2] [Turbo] jerky jerky......

Post by justarn »

hey all, can anyone help? I was driving home with my lady, from a lovely meal through some great twisty lanes half hour ago when my rev1 turbo started jerking as if it were struggling for fuel? the air fuel guage was reading a wide flickering band from lean too stock even when loaded, with no engine light. as soon as i load the throttle usually its nice an rich, an it jus came back from a tune and check up 1 week ago! i drove on for 15 minutes like this to get home, very gingerly n jerky mind you lol. . .

my first thoughts are fuel pump or lamba? any ideas anyone?

p.s it felt just as if it were running out of fuel! its definatly got fuel in the tank :mrgreen: !
Last edited by justarn on Wed Apr 29, 2009 9:55 pm, edited 1 time in total.
mr2 import
Posts: 195
Joined: Wed Sep 21, 2005 7:56 pm
Location: DUMFRIES

Re: [Mk2] [Turbo] jerky jerky......

Post by mr2 import »

perhaps a blocked fuel filter :-k
just started my own welding business! fingers crossed it works out :pray:
Baker
Posts: 2902
Joined: Sat Dec 18, 2004 12:07 pm
Location: brentwood, Essex

Re: [Mk2] [Turbo] jerky jerky......

Post by Baker »

check ignition, a lead may have bu$$ered up.
Extubby
Posts: 397
Joined: Thu Jul 13, 2006 9:44 am
Location: Flitwick

Re: [Mk2] [Turbo] jerky jerky......

Post by Extubby »

Sorry, I can't help it. You took your girlfriend out, drove home and on the lanes she started jerky jerky. I would not complain about that.

On a serious note it could be a dead fuel pump.
Apexi Induction, Gutted Cat, Departure Exhaust, Magnecor Leads, St205 cc, Blitz ebc.
Carbotech pads.
justarn
Posts: 82
Joined: Tue Dec 02, 2008 5:43 pm
Location: maidstone

Re: [Mk2] [Turbo] jerky jerky......

Post by justarn »

lol, id be so lucky :D ... jus spent half hour and found two off my leads had slid back in their sheafs( is tha a word? lol) away from the dizzy! problem sorted, after all my probs its a breath of fresh air for such an easy fix! owned her for 6 months and been on the road for one and a half, what a one n half tho lol..........

cheers all, thankyou very much :wink:
Extubby
Posts: 397
Joined: Thu Jul 13, 2006 9:44 am
Location: Flitwick

Re: [Mk2] [Turbo] jerky jerky......

Post by Extubby »

Glad you got it sorted. :D
Apexi Induction, Gutted Cat, Departure Exhaust, Magnecor Leads, St205 cc, Blitz ebc.
Carbotech pads.
justarn
Posts: 82
Joined: Tue Dec 02, 2008 5:43 pm
Location: maidstone

Re: [Mk2] [Turbo] jerky jerky......

Post by justarn »

well its not that fixed.... :cry: just took her too the bhp show n when i hit 11 or twelve psi i get some hesitation, pulls fine at 10??? guess some new leads r needed!

all agree? #-o
Baker
Posts: 2902
Joined: Sat Dec 18, 2004 12:07 pm
Location: brentwood, Essex

Re: [Mk2] [Turbo] jerky jerky......

Post by Baker »

yes :)

and check spark plug gaps, should be 0.7-0.8mm
justarn
Posts: 82
Joined: Tue Dec 02, 2008 5:43 pm
Location: maidstone

Re: [Mk2] [Turbo] jerky jerky......

Post by justarn »

right its had new top grade plugs leads rotor arm cap and its still hesitant, timing is spot on.....? wont boost past six psi! air fuel guage looks good. what symptoms would a faulty ignitor and coil pack give? could my big spark have damaged them?

lamba? air leak? dunno, been lookin in the engine for ages an everything seems to be in order pipe wise?

any ideas people? starting to get expensive ](*,)

still no fault codes?
Steve-O 2007
Posts: 6233
Joined: Sun Nov 12, 2006 1:54 pm

Re: [Mk2] [Turbo] jerky jerky......

Post by Steve-O 2007 »

Most likely an Air Leak, I got hesitation on my Rev2 above about 0.7bar. I made a Boost leak tester and pressurised my whole system and found loads of leaks :thumleft:
RobCrezz
Posts: 1509
Joined: Mon Jul 14, 2008 10:16 am
Location: Essex

Re: [Mk2] [Turbo] jerky jerky......

Post by RobCrezz »

Might not help, but untill I gapped my plugs to 0.7, I was getting the jerky jerky.
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