Plug type?
 

I have an 85 supra, and it seems to foul spark plugs. The last ones were Denso. Is there one that you guys recommend over others?

NGK Iridum seem to have the best life out of all spark plugs that is what i run in everything including my 200hp snowmobile which is famous for burning plugs but that's a 2 stroke.... the question is why are u fouling plugs. Whats ur timing set at?

Not sure what the timing is at. Could that cause a miss that gets better when the car warms up?

Yes it definatly will.. check that first with new plugs. Make sure u set it the right way with the jumper in the diag block. I'll get u a link in about 2 hrs if u need

I do need the link. Thanks!

http://www.toyota-supra.info/forums/...mn-timing.html


There ya go bud. Good luck. Let us kno if this helps. Or if its way off.

I'd stick with NGKs. As for the fouling try running a plug one temp range hotter.