--- Brian Hagen <brian.hagen@xxxxxxxxxxx> wrote: > I forgot to mention.. its backfiring thru the > exhaust, not out the carb. > Brian, have you checked the timing chain for wear? THis usually caused backfiring, too, if it's worn alot. To static check it, you'll need 2 people, one to look at the distributor rotor, the other to turn the crankshaft by breaker bar/socket. Here's how it goes : Bump the motor over til it's anywhere near the center of the timing mark tab. You need to know which way the pulley was turning, so you can turn it OPPOSITE with the breaker bar. Make a pointer to line up with the distributor rotor tip. Have your assistant watch the rotor. Now, make a note of which timing mark the balancer was at. Once you have that written down, take the breaker bar and back up the engine with the bolt, trans in neutral, until your assistant hollers that the distributor rotor has just moved. Won't take much movement if the chain isn't worn! Will move some if it IS worn alot. Now, compare the current timing mark line-up with the previous one. If it's over 4 degrees off, then the chain is worn out. That can cause your backfiring at idle. Another way is to see how steady your timing mark is staying at idle, if it seems to jump alot, it's worn. If it's rock-steady, it should be ok, depending on RPMs. Good luck, at least it's now running! Jerry __________________________________ Do you Yahoo!? Yahoo! Mail - 250MB free storage. Do more. Manage less. http://info.mail.yahoo.com/mail_250