i think i have a missfire going on, not to sure though. what would a missfire feel like, or how could you tell you have a missfire?

i have msd sci with the plugs gapped at .030..plugs a ngk 2 degrees colder plugs than stock.

 

bogging..lots of vibrations from the motor..look closely at your rpm gauge. And if its somewhat erratic then you can tell your mis-firing.

 

kinda like you're in a close competition in the 400m dash, then suddenly someone pushes you from the back, then from each side..

you'll definatly know when you're mis-firing. if you've ever accelerated over a bumpy terrain (shitty road) and your car kinda goes brrrrrr-BRRRr-brrrrrBRRRR.

i dunno how to explain it, but you'll know.

 

okay...then i guess its not a missfire cause its not vibrating and my rpms aren't erratic. it seems to happen when i let off the gas some. it sounds kinda like a little pop noise coming from the muffler. i don't have a cat, so could that have something to do with it? it usually does it when i let off the gas slow.

any ideas?

 

haha thats just extra fuel igniting in your exhaust pipe. Nothing to worry about.

 

damn...i moved my timing back cause i thought it may have been a little detonation or something. i guess i have to move my timing back to where it was.


thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93hb &raquo;</TD></TR><TR><TD CLASS="quote">okay...then i guess its not a missfire cause its not vibrating and my rpms aren't erratic. it seems to happen when i let off the gas some. it sounds kinda like a little pop noise coming from the muffler. i don't have a cat, so could that have something to do with it? it usually does it when i let off the gas slow.

any ideas?</TD></TR></TABLE>

backfire?

 

back fire sounds nothing like popping....more like a gunshot..atleast on a smallblock v8 it does.

 

popping, gunshot, same thing