Hi guys,
The cupra has developed a horrible misfire when up to temperature.
When its cold no problems but as soon as the engine has got up the temperature any boost will cause it to misfire.
Scanning on brings up codes for random/multiple misfiire and misfire cylinder 1 and 3.
I changed the coil pack (1+3) before i came to the realisation it was only when warmed up.
I also have a new set of spark plugs that i'm going to put in over the weekend.
My question, what else could it be? I think, correct me if im wrong, that when the engine is at operating temperature the fuel is leaned off compared to first starting. Could the MAF sensor be cutting fuel for some odd reason??
Any help much appreciated at usual.
Thanks
The cupra has developed a horrible misfire when up to temperature.
When its cold no problems but as soon as the engine has got up the temperature any boost will cause it to misfire.
Scanning on brings up codes for random/multiple misfiire and misfire cylinder 1 and 3.
I changed the coil pack (1+3) before i came to the realisation it was only when warmed up.
I also have a new set of spark plugs that i'm going to put in over the weekend.
My question, what else could it be? I think, correct me if im wrong, that when the engine is at operating temperature the fuel is leaned off compared to first starting. Could the MAF sensor be cutting fuel for some odd reason??
Any help much appreciated at usual.
Thanks