stalling after running hard
Thread Starter
Cruising
Joined: Oct 2021
Posts: 11
Likes: 0
From: Dallas
stalling after running hard
Thanks to the great advice and encouragement on this forum, I've replaced the fuel pump and rebuilt my carb.
76 with L48. Everything is stock. This is a relatively new to me car, so I expect this is the first carb rebuild in a while.
It starts great. It runs great. It is absolutely screaming like never before... except it has stalled twice in the last couple hrs of running. Both times it has stalled have been similar conditions... running it up to about 70mph at wide open throttle then slowing down to turn into the neighborhood. No misfire or anything... it just dies like I've turned it off. I can restart it after a bit of cranking and pumping the pedal and the pushing down the accelerator when it tries to start (I'm open to other advice here). The way it restarts (chug, chug, vroom) makes me think it might be flooding.
This isn't a consistent problem. Any good guesses?
Thanks!
76 with L48. Everything is stock. This is a relatively new to me car, so I expect this is the first carb rebuild in a while.
It starts great. It runs great. It is absolutely screaming like never before... except it has stalled twice in the last couple hrs of running. Both times it has stalled have been similar conditions... running it up to about 70mph at wide open throttle then slowing down to turn into the neighborhood. No misfire or anything... it just dies like I've turned it off. I can restart it after a bit of cranking and pumping the pedal and the pushing down the accelerator when it tries to start (I'm open to other advice here). The way it restarts (chug, chug, vroom) makes me think it might be flooding.
This isn't a consistent problem. Any good guesses?
Thanks!
Team Owner
Joined: Jan 2007
Posts: 53,648
Likes: 878
From: Southern Cal Ca
St. Jude Donor '22
hmm, so you think it is flooding when you turn?
or it stalls after high throttle open when the
throttle is closed abruptly?
turning sloshes the fuel in the bowl and maybe causing a flooding condition.= float to high?
stalling after high throttle and hard throttle closing = tune not right float
if you are correct about flooding out.
or a wire is grounding when moving from turning
or
sorry car aint right
or it stalls after high throttle open when the
throttle is closed abruptly?
turning sloshes the fuel in the bowl and maybe causing a flooding condition.= float to high?
stalling after high throttle and hard throttle closing = tune not right float
if you are correct about flooding out.
or a wire is grounding when moving from turning
or
sorry car aint right
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
If the new pump puts out too much pressure (above 6 psi) then it probably is flooding at low rpms or in low fuel demand situations where the fuel is getting forced past the needle valve and over filling the bowl and flooding the engine. Look to see if the top carb gasket appears to be leaking or fuel is pooling around the accel pump rod. These may be clues to over filling of the bowl.
You could also try lowering your float level if it's too high.
You could also try lowering your float level if it's too high.
Last edited by REELAV8R; Oct 17, 2021 at 12:08 PM.
