Read my plugs

TrailBeast said
Looks like too hot of a plug, rich idle along with lean primaries to me but it's only been 90 miles so it's a little hard to tell. :-)

It does idle on the rich side and I've been trying to get that dialed in with the A/F gauge. I also swapped from 72 mains to 70's thinking it was still running on the rich side, but I'll do some more running with it to figure it out.

69_340_GTS said
For only 90 miles of driving, it appears to have quite an accumulation of ash, or deposits on the electrode. Are you burning a little oil or using some kind of fuel additives?

Nope not burning oil, and im running 91 non-oxy gas, no additive.

RustyRatRod said
While it does appear lean, a 90 mile trip is not the correct method for reading plugs.

I agree

krazykuda said
You have to determine which system was working last when reading the plugs.

It could be the idle system or main jets.

Take it out to an open road/parking lot and get it running in the main fuel system, then shut it down and pull the plugs to look at them. Don't let it idle before reading the plugs, or you will be reading what the idle system is doing instead of the main system...

Make sure that you don't get into the fuel enrichment system (power valve)....

Thanks, I'll take it out for a run and do as you suggested.

Daves69 said
Some more reading here..................

http://www.4secondsflat.com/Spark_plug_reading.html

Thank you!