389 with carter AFB stumbles when you kick it. Just easing into it it runs ok. I have rebuilt carb twice ,changed fuel filter ect. Do you have any suggestions?

10

Asked by Aug 15, 2017 at 12:34 PM about the 1965 Pontiac GTO Coupe

Question type: Maintenance & Repair

2 Answers

860

Not to worry. Find an old carburetor guy who can open up the top of the carb and set the "accelerator pumps" richer to squirt out more gas when you floor it. With the motor idling you should see gas being squirted down into the carb when you pump the gas. It just needs more gas. You know that GTO takes a big gulp of air, and that air needs to quickly mix with gas to get power. The "power jets" further down below don't respond quickly because they need a huge flow of air to suck gas do into the intake. You can probably do it yourself trial and error and you will know when you get it right....that GTO will scream! I bet you can do it yourself, having rebuilt the carb and all. Good Luck my friend.

1 of 1 people found this helpful.
10

Thank you I give it a shot

1 of 1 people found this helpful.

Your Answer

Pontiac GTO Experts

  • #1
    Rucko
    Reputation
    780
  • #2
    Norm Davis
    Reputation
    350
  • #3
    F_O_R
    Reputation
    200
View All

Related Models For Sale

Used Ford Mustang
14 Great Deals out of 1,154 listings starting at $4,500
Used Chevrolet Corvette
567 listings starting at $4,450
Used Dodge Charger
79 Great Deals out of 799 listings starting at $2,298

Used Cars For Sale

2005 Pontiac GTO Coupe For Sale
2 listings starting at $13,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.