The Ford Barn

Ray Balukas · 08-03-2020, 03:15 AM

I have an 8BA stock rebuilt { Walt Dupont} engine. It has run great, and still runs great except for 1 issue which just started. Taking off in 1st and 2nd gear , and winding her up, high revs the engine cuts out . If I dont wind it up it runs fine, no issues in 3rd gear. I have changed the points and condenser and timed it. Any help here would be great! Kind regards Ray

RobR'35 · 08-03-2020, 04:37 AM

Starving for fuel?

Ggmac · 08-03-2020, 06:11 AM

Quote:

Originally Posted by Ray Balukas

I have an 8BA stock rebuilt { Walt Dupont} engine. It has run great, and still runs great except for 1 issue which just started. Taking off in 1st and 2nd gear , and winding her up, high revs the engine cuts out . If I dont wind it up it runs fine, no issues in 3rd gear. I have changed the points and condenser and timed it. Any help here would be great! Kind regards Ray

How high are you reving it ? Im leaning towards fuel starvation .
Stock fuel pump ? How old ? Tank and lines in good condition ?

G.M. · 08-03-2020, 08:40 AM

Valves sticking a little. Needs a dose of
Marvel Mystery Oil. G.M.

Ray Balukas · 08-03-2020, 06:14 PM

I have inspected the fuel line which looks fine, stock fuel pump 6 years old with about 4000 miles on it.The tank is clean. The 1 thing I noticed when under the hood revving the engine and letting off there is bubbles coming from the top of the pump into the glass bowl. not sure this is normal , as I said it runs great as long as I dont get into it and drive normal. I'll try the MMO also. Thanks for the info guys Ray

alanwoodieman · 08-03-2020, 06:34 PM

Sponsored Links (Register now to hide all advertisements)

air bubbles? change bowl gasket or rebuild pump/check valves, there is an air leak or the check valves are not working correctly. do a volume check

RobR'35 · 08-08-2020, 02:03 AM

Any results on this issue?

frnkeore · 08-08-2020, 03:18 AM

Air leak in the flex line, going to the fuel pump.

nickthebandit · 08-08-2020, 05:06 AM

Why do you mention a Walt DuPont engine ? Your problem doesn't appear to be because of Walt DuPont's work. You seem to have a fuel delivery problem.

cadillac512 · 08-08-2020, 06:26 AM

Quote:

Originally Posted by nickthebandit

Why do you mention a Walt DuPont engine ? Your problem doesn't appear to be because of Walt DuPont's work. You seem to have a fuel delivery problem.

Probably so we won't question the engine build since most of us know Walt's stuff is done correctly. That eliminates a lot of questions!

Terry

Pat/Ohio · 08-08-2020, 07:37 AM

My 8BA was experiencing the same "cutting-out" at higher rpms and I replaced the vacuum advance canister. It ran great after that!

Pat

Ray Balukas · 08-15-2020, 06:10 AM

I've been gone for a bit will get to looking at this soon. The reason I mentioned Walt was to state that it was a stock rebuild, and no other reason. Thanks Cadillac 512. Walt is the best

08-03-2020, 03:15 AM	#1
Ray Balukas Senior Member Join Date: Jul 2011 Location: Deerfield N.H. Posts: 299	Engine issue I have an 8BA stock rebuilt { Walt Dupont} engine. It has run great, and still runs great except for 1 issue which just started. Taking off in 1st and 2nd gear , and winding her up, high revs the engine cuts out . If I dont wind it up it runs fine, no issues in 3rd gear. I have changed the points and condenser and timed it. Any help here would be great! Kind regards Ray

08-03-2020, 04:37 AM	#2
RobR'35 Senior Member Join Date: Dec 2014 Location: Upper Peninsula, Michigan Posts: 604	Re: Engine issue Starving for fuel?

08-03-2020, 08:40 AM	#4
G.M. Senior Member Join Date: May 2010 Location: Florida and Penna. Posts: 4,471	Re: Engine issue Valves sticking a little. Needs a dose of Marvel Mystery Oil. G.M. __________________ www.fordcollector.com

08-03-2020, 06:14 PM	#5
Ray Balukas Senior Member Join Date: Jul 2011 Location: Deerfield N.H. Posts: 299	Re: Engine issue I have inspected the fuel line which looks fine, stock fuel pump 6 years old with about 4000 miles on it.The tank is clean. The 1 thing I noticed when under the hood revving the engine and letting off there is bubbles coming from the top of the pump into the glass bowl. not sure this is normal , as I said it runs great as long as I dont get into it and drive normal. I'll try the MMO also. Thanks for the info guys Ray

08-03-2020, 06:34 PM	#6
alanwoodieman Senior Member Join Date: May 2010 Location: upstate SC Posts: 3,000	Re: Engine issue Sponsored Links (Register now to hide all advertisements) air bubbles? change bowl gasket or rebuild pump/check valves, there is an air leak or the check valves are not working correctly. do a volume check

08-08-2020, 02:03 AM	#7
RobR'35 Senior Member Join Date: Dec 2014 Location: Upper Peninsula, Michigan Posts: 604	Re: Engine issue Any results on this issue?

08-08-2020, 03:18 AM	#8
frnkeore Senior Member Join Date: Jul 2019 Location: Southern Oregon Posts: 783	Re: Engine issue Air leak in the flex line, going to the fuel pump. __________________ Frank '35 Ford Model 51 '48 Ford F3 '54 Ford Tudor Mainline

08-08-2020, 05:06 AM	#9
nickthebandit Senior Member Join Date: May 2010 Location: Shippensburg, pa. Posts: 513	Re: Engine issue Why do you mention a Walt DuPont engine ? Your problem doesn't appear to be because of Walt DuPont's work. You seem to have a fuel delivery problem.

08-08-2020, 07:37 AM	#11
Pat/Ohio Senior Member Join Date: May 2010 Location: Wilmington, OH/Lakeland, FL Posts: 988	Re: Engine issue My 8BA was experiencing the same "cutting-out" at higher rpms and I replaced the vacuum advance canister. It ran great after that! Pat

08-15-2020, 06:10 AM	#12
Ray Balukas Senior Member Join Date: Jul 2011 Location: Deerfield N.H. Posts: 299	Re: Engine issue I've been gone for a bit will get to looking at this soon. The reason I mentioned Walt was to state that it was a stock rebuild, and no other reason. Thanks Cadillac 512. Walt is the best