vha27

so i went to my auto class today

i run the hack and have difficulty startings, the tech with 30 years experience sas since im using 93 octane, id have some problems cuz its slower burning, which makes sense, ne opinions on this

also my plugs with less than 150 miles are pretty much fouled, the ring that holds the electrode is a dark soot color althought the electrode is white, im running bpcpr7es -11 gapped to .03, he said try a warmer plug, maybe even stock, why? well weather around here, nj, is cold, so when the car first starts, the block is cold, therefore the plugs (thread area) is cool since it contacts the block, although the electrode is hot (real white color) , uneven heat distribution for the climate right now, maybe the bpcpr7es -11 when the ambient temp is warmer, spring time summer time

what do u guys think, does this makes sense, im gonna try stock plugs tommorow, need some reassurance

chris

vha27

buh bump

MotorMatrix.com

the plugs you are using are stage 11 heat range?? if you run a plug thats too cold it will foul. I had to change my stage 8's every week to 10 days.

texan

Are you running stock fuel pressure and injector sizing? If not, that's your problem. Not the 93 octane, not the unfouled plugs. Plugs foul when buildup occurs on and directly around the electrode tip & ground strap, the exposed plug body will naturally buildup carbon almost immediately after use.

b16ahybrid

That would be a heat range of 7 not 11.
The 11 is the recomended gap.

sharkcohen

I wouldn't run the stock heat range with boost.