missing a Cylinder? :(

Gaz · 13-03-09, 12:54 AM

3 times have i been driving my car when suddenly the engine starts to stutter and shake and loose power.

On tick over its very rough, and while driving its absolutely awful.

Its as if its only firing on 4 cylinders (maybe less) so it could be an ignition problem.

OR maybe its fuel related ?

The 3 times its happened, it seemed to clear up when i take it to 4.5K and higher.. but dropping back down the revs and the poor running returns.

I couldn't work out what was wrong, but a full bore, high rev Italian style 'tune up' down the bypass seemed to fix the problem.

LOL

Anyone got any ideas ? Why is this problem coming and going?

sam · 13-03-09, 09:32 AM

i had a very similar problem where low down my car was running like a bag of sh*t, but when rev'd hard it went good. I finally tracked it down to where the plug leads fit into the dizzy cap were all snapped bar 1 :S never seen it before but a quick trip to the scrappy to get some new (lol) leads sorted the problem

Micky · 13-03-09, 01:26 PM

yes same here i also would say change ht leads first they only last about 60k before they start breaking down.

Emjay · 13-03-09, 01:31 PM

leads, dizzy cap, rotor and plugs is the way to go. Do the basics an check them all.

If it's only seen low down I doubt theres a fuel problem.

Martc · 13-03-09, 01:59 PM

Quote:

Originally Posted by Emjay

leads, dizzy cap, rotor and plugs is the way to go. Do the basics an check them all.

If it's only seen low down I doubt theres a fuel problem.

I think this is the way to go - but just before you go out and spend some cash, just check all of the leads are seated correctly on the plugs and the cap, as well as the coil.

steveb · 13-03-09, 02:02 PM

try swoping the fuel pump relay with your old cars and also check the connection to the fuel pump under the rear seat ,if the ignition bits don't give you any joy

moonwatcher · 13-03-09, 03:00 PM

had the same problem years ago, changed the dizzy, sorted

Gaz · 22-03-09, 05:14 AM

Damnit!

Just got the exhaust on today

.. and now engines playing up again.

only this time it seems no amount of 'Italian style tune up' is able to fix it. Whats more I can't get under the bonnet because the cable snapped on the bonnet pull. Gurrr!

I'm Not having much luck ATM.

Emjay · 22-03-09, 09:05 PM

you have my sympathy, your in an elite club of "nothing is going right at the moment"

Booty · 22-03-09, 10:07 PM

Yes, welcome Gaz, it is rather 'eliteist'.

13-03-09, 02:02 PM	#6
steveb Senior Member Classic Audi Club Member Join Date: Jul 2008 Location: West Berkshire Posts: 1,155	try swoping the fuel pump relay with your old cars and also check the connection to the fuel pump under the rear seat ,if the ignition bits don't give you any joy __________________ [FONT] '76 Leyland Princess 2200 HLS '79 Scirocco storm '84 WR '89 coupe quattro '01 A2 1.4 TDI SE '14 A3 1.4 TFSI COD [/color][/size][/font]

13-03-09, 03:00 PM	#7
moonwatcher 4 ring whore! Classic Audi Club Member Join Date: Jul 2008 Location: Barrow in Furness, Cumbria Posts: 2,049	had the same problem years ago, changed the dizzy, sorted __________________ Coupe Quattro 1985

22-03-09, 10:07 PM	#10
Booty Moderator Classic Audi Club Member Join Date: Sep 2007 Location: Deepest darkest Shropshire Posts: 5,077	Yes, welcome Gaz, it is rather 'eliteist'. __________________ 1987 Audi Coupe quattro - Clarion Tribute Car 2012 Audi A6 Allroad 2004 Mercedes SLK 350 2017 Mercedes GLA 220

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13-03-09, 09:32 AM	#2
sam Grown up member Classic Audi Club Member Join Date: May 2008 Location: North east Posts: 778	i had a very similar problem where low down my car was running like a bag of sh*t, but when rev'd hard it went good. I finally tracked it down to where the plug leads fit into the dizzy cap were all snapped bar 1 :S never seen it before but a quick trip to the scrappy to get some new (lol) leads sorted the problem

13-03-09, 01:26 PM	#3
Micky Mr Fifty Thousand! Classic Audi Club Member Join Date: Apr 2008 Location: Birmingham Posts: 8,738	yes same here i also would say change ht leads first they only last about 60k before they start breaking down.

13-03-09, 01:31 PM	#4
Emjay Man Fettler Extraodinaire Classic Audi Club Member Join Date: Jul 2008 Location: Up my own arse blowing smoke Posts: 7,417	leads, dizzy cap, rotor and plugs is the way to go. Do the basics an check them all. If it's only seen low down I doubt theres a fuel problem.

22-03-09, 05:14 AM	#8
Gaz Senior Member Join Date: Jul 2007 Location: Five Cylinder heaven Posts: 1,494	Damnit! Just got the exhaust on today .. and now engines playing up again. only this time it seems no amount of 'Italian style tune up' is able to fix it. Whats more I can't get under the bonnet because the cable snapped on the bonnet pull. Gurrr! I'm Not having much luck ATM.

22-03-09, 09:05 PM	#9
Emjay Man Fettler Extraodinaire Classic Audi Club Member Join Date: Jul 2008 Location: Up my own arse blowing smoke Posts: 7,417	you have my sympathy, your in an elite club of "nothing is going right at the moment"