Another thought is to monitor your fuel trim and see what the engine thinks is happening with the fuel mix while this is happening.
...or stick a wide band sensor in the exhaust and see if it is rich or lean for yourself when this happens.
I would also recommend the NKG plugs - even a cheap set until you get this solved. When my 280Z was running as I described in my previous post - the NKG plugs were the only ones that could shake off the rich mixture - the rest would just foul until they died.
|