OKCterror Posted November 21, 2008 Report Share Posted November 21, 2008 Went out draggen and ran great for about 3hrs then started running rough. I fouled out both plugs. Mods below. Do i need to switch to race fuel? Running pump 91. Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted November 21, 2008 Report Share Posted November 21, 2008 I woudl say you need less fuel if you fouled plugs. Quote Link to comment Share on other sites More sharing options...
firebanshee Posted November 21, 2008 Report Share Posted November 21, 2008 Went out draggen and ran great for about 3hrs then started running rough. I fouled out both plugs. Mods below. Do i need to switch to race fuel? Running pump 91. If you are close to see level with a 19cc dome you definately need to at least mix 50/50 with 93 an race gas.What is your timing at also your signature says you have a shaved head and a cool head? Quote Link to comment Share on other sites More sharing options...
OKCterror Posted November 22, 2008 Author Report Share Posted November 22, 2008 oops i need to adjust my sig. Im runnin a coolhead now. +4 timing. Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted November 22, 2008 Report Share Posted November 22, 2008 Plug fouling is jetting. I'd run a mix as well. +4 timing, 19cc domes wont make it foul plugs but being really rich would. Hope this helps. Quote Link to comment Share on other sites More sharing options...
OKCterror Posted November 22, 2008 Author Report Share Posted November 22, 2008 im running 310 jets, do i need to go down??? also should i advance timing to +5? Quote Link to comment Share on other sites More sharing options...
2001Stroker Posted November 22, 2008 Report Share Posted November 22, 2008 Plug fouling is jetting. or lots of really bad oil. What ratio and brand are you using? Quote Link to comment Share on other sites More sharing options...
OKCterror Posted November 22, 2008 Author Report Share Posted November 22, 2008 red line max racing oil at 40:1 Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted November 23, 2008 Report Share Posted November 23, 2008 I havent ever jetted stock carbs, but from what I gather 310 is kind of big for FMF exhaust and no port work. T5's usually run 310's FMF's usually run 280's I would drop down to a 300 and see how it runs. Quote Link to comment Share on other sites More sharing options...
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