If there was a problem with the O2 sensor that may happen, but if you have an air leak then it will be running lean, the O2 sensor picks this up and increases the fuelling to try to bring it back normal. Any air leak post the MAF will cause this, but if only one bank affected then an air leak on the manifold for that side would be most suspect.sotal said:Yes from memory it was +25% so for whatever reason it thinks it is running lean and pumps in more fuel so in actual fact it is running rich.
errr - valley gasket,sotal said:You mention an air leak at a gasket would cause this - which gasket or gaskets?
Pretty sure the long term adaption remains even after battery removed - hence the need to reset the adaptive values using T4 or Blackboxsotal said:I'm talking short term fuel trim, long term keeps getting reset by leaving the battery off etc.
easy start will be ok - don't know about the alcohol - really need something that is a gas (propane can be used) or something that changes to gas like the easy start. Shouldn't be any flames. Do a small section at a time and having an extinguisher would be a sensible precautionsotal said:I've got some easy start somewhere or some isoproal alcohol - would either of these do? Is it likely to cause any flames should I have the fire extinguisher at the ready?