Random cylinder misfire - Random is the right word for it!

[Karl_mac_]

I had random misfires under load now n then in 3 cylinders turned out to be a £5 o ring on the intercooler only happend when I went stage 1+ and boost must have been to much for it 

That sounds interesting. My car is standard but I only get misfire under load, i've also got an evap leak fault....

Yet more stuff to look at!

[Markyed30]

Have a look under the bumper and see if there's any oil residue at the left or right near the spot lights
http://www.mk5golfgti.co.uk/forum/index.php/topic,81510.0.html

[DaneJD]

I had the same kind of fault a couple of times when I first picked up my gti, sometimes cleared itself if I turned the engine off and back on again, since having the coil pack recall though it all seems fine

[Karl_mac_]

Turns out to be a sticking injector in cylinder 2. Turns out JBS have some nearly new second hand ones knocking around so not quite as financially crippling as it could have been.

Hoping changing the injector cures the other niggling issues and I can get on with enjoying the car. At the moment I just want to kill it with fire.

[danj3000]

Turns out to be a sticking injector in cylinder 2. Turns out JBS have some nearly new second hand ones knocking around so not quite as financially crippling as it could have been.

Hoping changing the injector cures the other niggling issues and I can get on with enjoying the car. At the moment I just want to kill it with fire.

Interesting Karl_Mac, the injectors is where I thin the issue has been for me. Touch wood the car is driving very nicely at the moment since putting that injector cleaner in, how long it will last we'll see but hopefully a fair while. I'm thinking getting the injectors refurbed down the line will only be a good thing.

[Karl_mac_]

Turns out to be a sticking injector in cylinder 2. Turns out JBS have some nearly new second hand ones knocking around so not quite as financially crippling as it could have been.

Hoping changing the injector cures the other niggling issues and I can get on with enjoying the car. At the moment I just want to kill it with fire.

Interesting Karl_Mac, the injectors is where I thin the issue has been for me. Touch wood the car is driving very nicely at the moment since putting that injector cleaner in, how long it will last we'll see but hopefully a fair while. I'm thinking getting the injectors refurbed down the line will only be a good thing.

Mine have got progressively worse over the last 6 months, the BG44K seemed to help a bit but the car really suffers when its warm or doing hot starts.

Wish I could afford to change the lot but is a bit pointless as ai'm not planning on keeping the car long.

[fab5freddy]

Well my random misfire has turned into constant misfire 

Mines a bit more serious than first thought, valve stem oil seal might be gone on cylinder 3 causing plugs to foul, swamped with oil 

Head off tomorrow, to see what's going on

[bacillus]

Well my random misfire has turned into constant misfire 

Mines a bit more serious than first thought, valve stem oil seal might be gone on cylinder 3 causing plugs to foul, swamped with oil 

Head off tomorrow, to see what's going on

That doesn't sound good...