JustAnswer > Classic Car
Ask A Question|Register|Login|Help
JustAnswer

Classic Car
Ask a Classic Car Question, Get an Answer ASAP!

Have your own Classic Car question?

6 Auto Mechanics are Online Now
characters left:
Not a Classic Car Question?
Bookmark and Share

Question

i own a 71 chevy truck with a 454 engine and i have a 750 automatic choke edelbrock carb. and my problem is that when i am going down the rode it tends to stall and sometimes blow fire up thru the carb when in park and giving it gas. i set the timing but still does it i also replaced rotor, cap, spark plugs, spark plug wires and still does it i dont understand it i also elimamanted some vacuum leaks around the carb what do you think it can be?

Submitted: 181 days and 23 hours ago.
Category: Classic Car
Value: $18
Status: AWAITING CUSTOMER ACTION
+
Read More

Optional Information

1971 Chevrolet TRUCK 454

Already Tried:
I AM HAVING BACK FIRE THRU THE CARB. REPLACED CAP,ROTOR,SPARK PLUGS AND WIRES CARB CLEAN I SET THE TIMING AND STILL HAVING TROUBLE

Answer

It sounds like the distributor is not "advancing".
Disconnect the Vacuum Asdvance hose from the Carb or Intake.
Remove Distributor Cap.
Apply Vacuum to the Vacuum Advance Hose & check to see if the Advance Plate moves & maintains Vacuum (no leaks). If it doesn't move or the Vacuum Leaks internally, replace the Vacuum Advance Unit

Picture
Expert: Lurch
Pos. Feedback: 98.9 %
Accepts: 
Answered: 5/26/2009

Classic Car Mechanic

Heavy Line Mech-, Mobile Electronics. Sales, Intallation & Repair for 30 years. R/S, etc.

+
Read More

Related Classic Car Questions

  • 1967 RS HEADLIGHTS I NEED A EASY DIAGRAM FOR THE RELAY WIRIN...
  • Hi there, I have a 1979 HZ Kingswood, 6 cylinder automatic.
  • 1923 T-Bucket with a 350 Crate engine, three 2 barrels and
  • I have a Willys Jeep CJ2A engine w/ assy.no-914361 and seri...
  • looking at purchasing 1969 Nova that is said to be an SS. Wh...
  • I have a jeep with a 232 six a previous owner installed a We...
  • Question for Matt0302 Hi its me again, thank you for your
  • How much does a 1940 Ford 1/2 ton pick up weight



Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
Question List | Become an Expert | Terms of Service | Security & Privacy | About Us
© 2003-2009 JustAnswer Corp.