Runs Great but...
Thread Starter
Intermediate
Joined: Jul 2015
Posts: 25
Likes: 0
Runs Great but...
I have a 1981 Corvette with the factory 350 engine.
I am having a annoying problem.
My car starts and runs great normally.
If I stop and shut down after driving for a while, then restarting after about 15 minutes or so, the engine starts fine, but I only get about 100 yards and the engine dies and won't restart.
Looking into the carb and working the throttle linkage gets no fuel from the accelerator pump jets.
If I wait for about 15-30 minutes,and crank the engine a bit, checking the carb for fuel flow shows fuel available. The engine will then start and run well.
Previously, this occurred only after driving and then stopping for a while. Never died while driving.
Recently, the engine has died while driving around town. Will not restart until the above procedure is done. Cool down, and crank to refill the bowl.
Have changed the fuel pump, checked return fuel line clear, insulated line from pump to carb, changed filter.
Good solid pressure at 7-8 psi on gauge.
ideas?
I am having a annoying problem.
My car starts and runs great normally.
If I stop and shut down after driving for a while, then restarting after about 15 minutes or so, the engine starts fine, but I only get about 100 yards and the engine dies and won't restart.
Looking into the carb and working the throttle linkage gets no fuel from the accelerator pump jets.
If I wait for about 15-30 minutes,and crank the engine a bit, checking the carb for fuel flow shows fuel available. The engine will then start and run well.
Previously, this occurred only after driving and then stopping for a while. Never died while driving.
Recently, the engine has died while driving around town. Will not restart until the above procedure is done. Cool down, and crank to refill the bowl.
Have changed the fuel pump, checked return fuel line clear, insulated line from pump to carb, changed filter.
Good solid pressure at 7-8 psi on gauge.
ideas?
Drifting
Joined: Jun 2012
Posts: 1,990
Likes: 183
From: Port St. Lucie Fl
I have a 1981 Corvette with the factory 350 engine.
I am having a annoying problem.
My car starts and runs great normally.
If I stop and shut down after driving for a while, then restarting after about 15 minutes or so, the engine starts fine, but I only get about 100 yards and the engine dies and won't restart.
Looking into the carb and working the throttle linkage gets no fuel from the accelerator pump jets.
If I wait for about 15-30 minutes,and crank the engine a bit, checking the carb for fuel flow shows fuel available. The engine will then start and run well.
Previously, this occurred only after driving and then stopping for a while. Never died while driving.
Recently, the engine has died while driving around town. Will not restart until the above procedure is done. Cool down, and crank to refill the bowl.
Have changed the fuel pump, checked return fuel line clear, insulated line from pump to carb, changed filter.
Good solid pressure at 7-8 psi on gauge.
ideas?
I am having a annoying problem.
My car starts and runs great normally.
If I stop and shut down after driving for a while, then restarting after about 15 minutes or so, the engine starts fine, but I only get about 100 yards and the engine dies and won't restart.
Looking into the carb and working the throttle linkage gets no fuel from the accelerator pump jets.
If I wait for about 15-30 minutes,and crank the engine a bit, checking the carb for fuel flow shows fuel available. The engine will then start and run well.
Previously, this occurred only after driving and then stopping for a while. Never died while driving.
Recently, the engine has died while driving around town. Will not restart until the above procedure is done. Cool down, and crank to refill the bowl.
Have changed the fuel pump, checked return fuel line clear, insulated line from pump to carb, changed filter.
Good solid pressure at 7-8 psi on gauge.
ideas?
Le Mans Master
Joined: Jun 2019
Posts: 7,658
Likes: 2,470
From: Indiana
Drifting
Joined: Aug 2009
Posts: 1,346
Likes: 160
From: new iberia la
I would suspect fuel percolation..its literally boiling in the carb after shutdown.. vapor does not flow .. do you have a phenolic spacer under carb ?. Fuel line close to heat source ? Return line to tank?... Try raising the hood immediately next time when you stop.. if it does not do it , then this is most likely your problem
