DaddyO

My car bucks, jumps, and sputters. It's definitely not a vacuum leak, b/c today I tried driving with the vacuum system disconnected and plugged.

It idles fine, but when I hit the gas I get what seems like random bucking, chugging and sputtering. I also hear a popping coming from the exhaust, but that's in addition to the bucking.

Any thoughts?? I'm frustrated here......
Car ran fine, but then sat in storage for about 6 months.
:confused:

LAvetteman

I would suspect moisture or corrosion in distributor cap/ rotor. Or bad plugs or wires.

Please register your 71 at http://www.71corvette.com

DaddyO

Thanks. I'll check that this week.

Paul L

The additives in gasoline precipitate out with time and form a pinkish gum/goo. This can plug up the carb. Try the $5.00 solution: get some carb cleaner and spray in directly through carb throat. Let sit for ~30 minutes and fire it up. With air cleaner ON! Don't need a fire.

jpatrick636

:iagree: with paul67. Did you put a stabilizer in the gas before you stored it? A can of dry gas might be a good idea. Also, shine a flashlight into your gas tank and see if you have a lot of sediment at the bottom of your tank. If you do, get a cheep hand pump, rig an extention out of tubing and with an almost empty tank and a friend, pump it out. If you get it almost dry, you can clean it with a wet vac. BE CAREFUL!


[Modified by jpatrick636, 10:24 AM 9/27/2003]


[Modified by jpatrick636, 10:26 AM 9/27/2003]

docmow

i had a bad fule filter
docmow

Matt Gruber

sounds like ignition. points?
i would add 5 gal fresh gas and dry-gas, but my gas is always 6 months old, and runs even 1 year old.
once i had a broken wire caused by the vacuum advance moving it. ran just like yours