funkysi
09-09-2009, 10:45 AM
Hi All,
I hope you can help....
My girlfriends has a Seat Ibiza Chill 1.4 on a 51 plate (Mk2)
After a 'service' in December last year it began to drive a little 'lumpy', so soon after she returned the car back to the garage where they suggested changing the HT leads and spark plugs.
From what I understand, 'lumpy' meant that it would occasionally misfire, the engine light would come on and it would go into limp mode (until ignition was turned on/off)
The parts were changed by one of her friends, they also changed the coil pack (all parts from GSF)
The car still didn't seem to run right, and progressively got worse.
She took the car to another garage when the car was really starting to struggle, and they found that compression was down on 2 cylinders.
The car was then booked in last week, and upon removing the head found 2 very bady damaged outlet valves (burnt to a crisp and cracked)....
The spark plugs were checked and found to be for a SEAT TOLEDO...oops GSF ;-)
Anyhoo....the valves were replaced and the sparkplugs replaced.
Using the garages diagnostics it still showed a random misfire code and misfires in 3 of the 4 cylinders....back to the original fault again !
I had a look last night using VCDS and found the same (see attached log)
I suspect a 'timing' issue as all of the ignition components have now been replaced.
Also a injector problem would probably only be specific to one cylinder.
She told me last night that when she bought the car, about a year ago, it had been serviced and the mileage was around 85K. Not sure if the cambelt was changed at that time.
It's now on 125K, and she hasn't replaced the cambelt in this time.
My theory is that the cambelt is worn, causing a 'timing' issue causing the alarm codes, and cylinder damage.
I think this because she says it only goes 'lumpy' when decelerating (around 2500 - 3500 rpm), my thinking is that the tension on the cambelt would be off and if worn could throw the timing out.
Apologies for the huuuuge explanation, but she's at her wits end.
Any suggestions / discussion would be greatfully received :-)
Thanks
FunkySi
I hope you can help....
My girlfriends has a Seat Ibiza Chill 1.4 on a 51 plate (Mk2)
After a 'service' in December last year it began to drive a little 'lumpy', so soon after she returned the car back to the garage where they suggested changing the HT leads and spark plugs.
From what I understand, 'lumpy' meant that it would occasionally misfire, the engine light would come on and it would go into limp mode (until ignition was turned on/off)
The parts were changed by one of her friends, they also changed the coil pack (all parts from GSF)
The car still didn't seem to run right, and progressively got worse.
She took the car to another garage when the car was really starting to struggle, and they found that compression was down on 2 cylinders.
The car was then booked in last week, and upon removing the head found 2 very bady damaged outlet valves (burnt to a crisp and cracked)....
The spark plugs were checked and found to be for a SEAT TOLEDO...oops GSF ;-)
Anyhoo....the valves were replaced and the sparkplugs replaced.
Using the garages diagnostics it still showed a random misfire code and misfires in 3 of the 4 cylinders....back to the original fault again !
I had a look last night using VCDS and found the same (see attached log)
I suspect a 'timing' issue as all of the ignition components have now been replaced.
Also a injector problem would probably only be specific to one cylinder.
She told me last night that when she bought the car, about a year ago, it had been serviced and the mileage was around 85K. Not sure if the cambelt was changed at that time.
It's now on 125K, and she hasn't replaced the cambelt in this time.
My theory is that the cambelt is worn, causing a 'timing' issue causing the alarm codes, and cylinder damage.
I think this because she says it only goes 'lumpy' when decelerating (around 2500 - 3500 rpm), my thinking is that the tension on the cambelt would be off and if worn could throw the timing out.
Apologies for the huuuuge explanation, but she's at her wits end.
Any suggestions / discussion would be greatfully received :-)
Thanks
FunkySi