billymgb1000

i have a fresh 4.8 with a g.m hot cam and a new 625 cfm street demon. been running great and just started back firing through carb every once in a while just when I am rolling into the throttle, not when I stomp it could it be bad gas. I just have not run into this before. I tried all the pills does the same. and it's not every time. why I ask about the gas is I put 30 bucks in it mon and tues afternoon it did it the first time. thanks for any help.

ZONES89RS

iTrader: (25)

May be a lean pop. Make sure there is no debris in the carb. A quick freshen up will reveal any clogged ports.

billymgb1000

thanks zones89rs going to check that right now

Doug G

When does your State change to "winter blend" gas ?

speedtigger

iTrader: (16)

You might try changing the spark plugs too. I have seen them do this when the plugs start to foul.

If fresh plugs does indeed fixes the problem, you will want to clean up your tune to stop it from happening again.

billymgb1000

thanks speedtigger I don't mean to sound dumb but what do you mean by clean up the tune

Doug G

Fix it to run cleaner....keep them from fouling

billymgb1000

thanks a lot guys it turned out to be shitty gas she running like a champ once again