The Ford Barn

38convsedan · 12-18-2022, 11:17 AM

Chasing down issue on newly rebuilt 8BA
Won’t idle without choke, upper carb gasket wet with fuel
Have to set idle screw almost all the way open to get idle with choke open

Previous owner did rebuild/never could get engine running properly

Mart · 12-18-2022, 11:21 AM

What sort of carb do you have on it?

38 coupe · 12-18-2022, 11:21 AM

Something is wrong in your idle circuit. I suggest taking the carburetor apart again and verifying all the little passages are open. Compressed air and tiny soft brass wires (a single strand from a multi-strand wire) are your friends for cleaning passages.

joe 1950 · 12-18-2022, 11:29 AM

the upper gsk showing signs of wetness is somewhat normal if it’s dripping fuel then there’s a float problem or needle and seat but either way it needs to come apart like 38 coupe suggested good luck

38convsedan · 12-18-2022, 12:13 PM

Carb is a model 8BA

I’ve never torn down/cleaned/rebuilt a carb and am hesitant to screw things up

1948F-1Pickup · 12-18-2022, 12:28 PM

Sponsored Links (Register now to hide all advertisements)

Send it to Charlie then…….. and then you’ll be done.

38convsedan · 12-18-2022, 06:09 PM

Complicating matters is that I’m unsure timing is correct. When I set timing just BTDC, car backfires and is difficult to start.
I’m in search of ground zero!

tubman · 12-18-2022, 08:34 PM

Quote:

Originally Posted by 38convsedan

Complicating maters is that I’m unsure timing is correct. When I st timing just BTDC, car backfires and is difficult to start.
I’m in search of ground zero!

Remember, The "dot" on the front pulley is already at 4 degrees BTDC. Set it right on the dot, not before it.

Terry,OH · 12-19-2022, 07:26 AM

The Carb has three idle adjustments. One for RPM and two are for the fuel air mixture adjustment. These three only effect idle. Suggest you leave both of the mixture adjustments about 7/8 of one turn out. The engine should idle with this setting unless the RPM setting is too low. This setting can be fine tuned later.

rockfla · 12-19-2022, 08:00 AM

38ConvSedan
I am up in Jax, "maybe" I can make a Saturday trip IF you need??? Your just far enough to be close OR just close enough to be far not sure which......I don't have any 8BA stuff already done, IF it was 38 stock, I have a distributor already done and set by Michael at Third Gen and carburetor already done by CHarlieNY we could plug and play!!! PM me IF you need.

38convsedan · 12-20-2022, 04:48 PM

PROBLEM SOLVED!!
It was a carburetor issue.
1). Vacuum advance fitting was leaking at carb (engine smoothed out when spraying carb cleaner at that fitting). Reinstalled fitting correctly.
2). Noticed passenger side idle screw setting made no difference, including removing it completely. Blew out opening and sprayed carb cleaner…

Engine now runs great!!! It has never run this well in all the time I’ve owned it.

Thank you to all who helped out!!!

12-18-2022, 11:17 AM	#1
38convsedan Senior Member Join Date: May 2022 Location: Lakeland Florida Posts: 377	8BA upper carb gasket wet/won’t run without choke Chasing down issue on newly rebuilt 8BA Won’t idle without choke, upper carb gasket wet with fuel Have to set idle screw almost all the way open to get idle with choke open Previous owner did rebuild/never could get engine running properly

12-18-2022, 11:21 AM	#2
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,755	Re: 8BA upper carb gasket wet/won’t run without choke What sort of carb do you have on it?

12-18-2022, 11:21 AM	#3
38 coupe Senior Member Join Date: May 2010 Location: South Texas Posts: 1,631	Re: 8BA upper carb gasket wet/won’t run without choke Something is wrong in your idle circuit. I suggest taking the carburetor apart again and verifying all the little passages are open. Compressed air and tiny soft brass wires (a single strand from a multi-strand wire) are your friends for cleaning passages.

12-18-2022, 11:29 AM	#4
joe 1950 Senior Member Join Date: Mar 2013 Location: Green Bay Wi Posts: 400	Re: 8BA upper carb gasket wet/won’t run without choke the upper gsk showing signs of wetness is somewhat normal if it’s dripping fuel then there’s a float problem or needle and seat but either way it needs to come apart like 38 coupe suggested good luck

12-18-2022, 12:13 PM	#5
38convsedan Senior Member Join Date: May 2022 Location: Lakeland Florida Posts: 377	Re: 8BA upper carb gasket wet/won’t run without choke Carb is a model 8BA I’ve never torn down/cleaned/rebuilt a carb and am hesitant to screw things up

12-18-2022, 12:28 PM	#6
1948F-1Pickup Senior Member Join Date: Oct 2015 Location: Socal Posts: 795	Re: 8BA upper carb gasket wet/won’t run without choke Sponsored Links (Register now to hide all advertisements) Send it to Charlie then…….. and then you’ll be done.

12-18-2022, 06:09 PM	#7
38convsedan Senior Member Join Date: May 2022 Location: Lakeland Florida Posts: 377	Re: 8BA upper carb gasket wet/won’t run without choke Complicating matters is that I’m unsure timing is correct. When I set timing just BTDC, car backfires and is difficult to start. I’m in search of ground zero! Last edited by 38convsedan; 12-18-2022 at 10:13 PM.

12-19-2022, 07:26 AM	#9
Terry,OH Senior Member Join Date: May 2010 Posts: 4,751	Re: 8BA upper carb gasket wet/won’t run without choke The Carb has three idle adjustments. One for RPM and two are for the fuel air mixture adjustment. These three only effect idle. Suggest you leave both of the mixture adjustments about 7/8 of one turn out. The engine should idle with this setting unless the RPM setting is too low. This setting can be fine tuned later.

12-19-2022, 08:00 AM	#10
rockfla Senior Member Join Date: Mar 2014 Location: Jacksonville FL Posts: 3,963	Re: 8BA upper carb gasket wet/won’t run without choke 38ConvSedan I am up in Jax, "maybe" I can make a Saturday trip IF you need??? Your just far enough to be close OR just close enough to be far not sure which......I don't have any 8BA stuff already done, IF it was 38 stock, I have a distributor already done and set by Michael at Third Gen and carburetor already done by CHarlieNY we could plug and play!!! PM me IF you need.

12-20-2022, 04:48 PM	#11
38convsedan Senior Member Join Date: May 2022 Location: Lakeland Florida Posts: 377	Re: 8BA upper carb gasket wet/won’t run without choke PROBLEM SOLVED!! It was a carburetor issue. 1). Vacuum advance fitting was leaking at carb (engine smoothed out when spraying carb cleaner at that fitting). Reinstalled fitting correctly. 2). Noticed passenger side idle screw setting made no difference, including removing it completely. Blew out opening and sprayed carb cleaner… Engine now runs great!!! It has never run this well in all the time I’ve owned it. Thank you to all who helped out!!!