Engine dies during hard stops
Thread Starter
Drifting
Joined: Oct 2004
Posts: 1,259
Likes: 7
From: Ontario
Engine dies during hard stops
Even when I shift into neutral my engine stalls during quick stops. I can prevent this by revving the engine as I am braking. Everything else is perfect with good idle great responsive acceleration. It restarts after a few cranks. I suspect some sort of carb issue. I have a Holley 650 with mechanical secondaries. Any thoughts/suggestions?
Racer
Joined: Dec 2002
Posts: 421
Likes: 2
From: Long Grove, IL
Originally Posted by Brettmc
Lower the secondary bowl level.
Brett
Brett
Just my .02 for the day YMMV
Jay
Safety Car
Joined: Jul 2002
Posts: 3,770
Likes: 3
From: St Louis MO
In this situation, the 4150's secondary bowl has the gas pushed up against the metering block on a hard stop. If the fuel level is too high, gas will begin to drip out of the secondary booster(s).
Brett
Brett
Melting Slicks
Joined: Jul 2002
Posts: 3,128
Likes: 3
From: Deltona (son of Deland and DAYTONA) FL
Originally Posted by carguy4sure
Thanks for your posts. I will check the float levels in the morning and will also try dropping the secondary. Will report back. Thanks
I lowered both fuel bowl levels... a little. Don't want to mess with tuning too much. Last time at the track my car ran the same number 3 times! It might not be fast, but it's becoming consistent
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Thread Starter
Drifting
Joined: Oct 2004
Posts: 1,259
Likes: 7
From: Ontario
The weather got very bad up here and I have not had a chance to try it. Today was the first good day. I will try it tomorrow and will let you know. I am going to start by lowering the secondary and double checking that the primary is set to spec.
Thread Starter
Drifting
Joined: Oct 2004
Posts: 1,259
Likes: 7
From: Ontario
I just finished some testing. First, I checked the levels and both primary and secondary and they were at the correct levels. I lowered the secondary a little and it did seem to make a difference but the problem is still there. Not as sensitive to braking but it will still stall when braking hard. Sometime this weekend I will try moving the secondary a little lower.
