cny first gen 71 Posted September 23, 2020 Share Posted September 23, 2020 Anyone good at reading spark plugs. I'm having a problem with #1 fouling out, used to take about 1500 to 2000 miles but its getting worse. This plug came out in Carlisle after less than 1000 miles. Had another one do it again after about 500. Picture isn't great but any help is appreciated. Quote Link to comment Share on other sites More sharing options...
jft69z Posted September 23, 2020 Share Posted September 23, 2020 Might be time for a compression & leakdown test Steve... Or a valve seal related issue. Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted September 23, 2020 Share Posted September 23, 2020 Plug is oil fouled. Most likely worn valve guide. Quote Link to comment Share on other sites More sharing options...
Dtret Posted September 23, 2020 Share Posted September 23, 2020 That’s what I was going to say but now I don’t have to. Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted September 23, 2020 Author Share Posted September 23, 2020 Yea possible guide or valve seal. I have a new set of aluminum heads for it but was kinda waiting to do complete motor at once. Been collecting parts for as couple years now, still dont have them all. Wanted to do engine and trans while it's out. Decisions decisions. Summer is almost over I'll have to see. Thanks! Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted September 23, 2020 Share Posted September 23, 2020 Get an old school spark plug anti oil fouler, add it and enjoy the rest of the season. 2 Quote Link to comment Share on other sites More sharing options...
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