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#1
04-27-2019, 08:01 AM
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engine dies when hard braking
Hi: Hoping someone might direct me toward a solution on this.
Engine want to die on hard braking. I have a hydra boost system for braking. No vacuum booster. 600 hp, Torker 2 with 950 quickfuel. Runs great except when hard braking, wants to die. Standard Transmission. I have to rev it up to keep it running. Any thoughts? Thanks Charles |
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#2
04-27-2019, 08:36 AM
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Float level, or needs a "vent whistle" for the float bowls is my first guess.
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'65 Tempest 467 3650# 11.30@120.31 Last edited by Scott65; 04-27-2019 at 08:40 AM. Reason: Correction |
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#3
04-27-2019, 09:17 AM
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Does jambing your foot on the brake while not moving do anything? Or is it just when moving?
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#4
04-27-2019, 09:38 AM
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Drop your rear float level to 1/16 to 1/8 inch below the sight plug opening.
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#5
04-27-2019, 10:56 AM
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Thanks guys. Seems to be when just moving forward. I will mess around with it when weather gets nice again. I will try suggestions. Thanks
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#6
04-27-2019, 11:10 AM
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Seems like a float issue like the others said.
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#7
04-27-2019, 11:13 AM
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Ok, Thanks. Checking out these vent whistles now. Never heard of them before. Makes sense.
Thanks again |
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#8
04-27-2019, 11:55 AM
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Does it have the vent tubes still?
Connect the 2 tubes with a piece of hose that has a piece cut out of it in the middle to make the vent higher up essentially. Quick and easy fix to try if it is spilling over. 
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#9
04-27-2019, 01:51 PM
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....I’d hope a quick fuel carb came with all the “whistles”, and bells
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#10
04-28-2019, 07:15 AM
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John: Yes it has the vent tubes. I will give that a try next time out. Weather has been crap for a week now.
Thanks guys Charles |
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#11
04-29-2019, 06:03 AM
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Join the club on that crap weather stuff!
So far this spring sucks in the northeast!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#12
04-29-2019, 07:43 AM
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Don't be afraid to drop the floats some to where the fuel is just getting read to run out on the threads of the sight holes. Taller vent tubes may help if it's actually chasing up the tubes and spilling into the engine.
Check the floats and fuel pressure. A soggy float or half filled brass one will allow the quick forward movement of the fuel to cause fuel control issues at the inlet seats. I wouldn't run much more than 6psi provided you have adequate fuel delivery and if you are running a high output electric pump set-up make sure there is a return instead of "dead-head". Many pump manufacturers tell you some of those pumps can run dead-head, but I've seen them have issues with fuel control which is very quickly fixed by installing a return system.......Cliff
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#13
04-29-2019, 07:50 AM
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Steve: Yes our weather is in the low numbers. I was checking weather maps for US. and Can. and looks crappy for another week then warming up..
Thanks Cliff: Ya I have an Aeromotive setup on both cars with return lines. Wifes car is fine. Mine was fine last year. It just started this year. I'm going back to Esso fuel from the Shell. It just doesn't like the Shell Premium. I will check this stuff out when weather turns nicer. Thank you all for you thought.. Charles |
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