Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 08-21-2013, 09:29 AM   #1
brentom
Junior Member
 
Join Date: Dec 2010
Location: NJ
Posts: 18
Default 39 ford flathead

My original 39 ford was running fine with the exception of backfiring on decal, well it stopped running, I have spark, I have fuel, when squirting the carb it fire for two secs, can't keep it running.

While I'm not much of a technical guy, I need to start learning, luck has it this happened in my driveway, now I need help in diagnosing the problem, if I have spark and presumably fuel, then perhaps the carb or the points are the problem?

your wisdom is appreciated,

Ive attached a couple of pics as well for pleasure.
Attached Images
File Type: jpg motor.jpg (78.1 KB, 71 views)
File Type: jpg driverside.jpg (69.8 KB, 63 views)
File Type: jpg IMG_1184.jpg (53.0 KB, 64 views)
File Type: jpg motor3.jpg (75.3 KB, 65 views)
brentom is offline   Reply With Quote
Old 08-21-2013, 09:36 AM   #2
jrhaelig
Senior Member
 
jrhaelig's Avatar
 
Join Date: Mar 2011
Location: Bridgewater, New Jersey
Posts: 264
Default Re: 39 ford flathead

Hey -

Where in NJ are you?

I am in Bridgewater - not too far from any place.

If it's running on the squirts it could be that you lost prime on your fuel line/pump.

I had that on my 39 pickup.

The cork gaskets on the sediment bowl are always suspect. Any air in the fuel sediment bowl will break that prime.

Clogged line or aftermarket filter could also be part of the problem.

Let me know..............
__________________
John Haelig
Bridgewater, NJ
1939 Ford Pickup
1963 Lincoln Continental
1939 Buick
jrhaelig is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 08-21-2013, 02:22 PM   #3
G.M.
Senior Member
 
Join Date: May 2010
Location: Florida and Penna.
Posts: 4,471
Default Re: 39 ford flathead

Check out your flex hose, may have a small hole you can't see but sucks air. G.M.
__________________
www.fordcollector.com
G.M. is offline   Reply With Quote
Old 08-21-2013, 03:02 PM   #4
oldford2
Senior Member
 
oldford2's Avatar
 
Join Date: May 2010
Location: pittsfield, MA
Posts: 2,086
Default Re: 39 ford flathead

Unhook the fuel line at the carb and hold a rag under it. Then crank the engine just a couple of turns to see if the pump is pumping. Make sure the ignition is off. Be careful re-hooking up the gas line. Easy to crossthread and then you have a problem. That is a nice car.
John
oldford2 is offline   Reply With Quote
Old 08-21-2013, 04:50 PM   #5
TonyM
Senior Member
 
TonyM's Avatar
 
Join Date: Jun 2010
Location: West Hammond, Illinois
Posts: 2,785
Default Re: 39 ford flathead

Quote:
Originally Posted by brentom View Post
My original 39 ford was running fine with the exception of backfiring on decal,



What is "backfiring on decal"? Never heard of this.
thanks. TM
TonyM is offline   Reply With Quote
Old 08-21-2013, 05:01 PM   #6
37coop
Senior Member
 
37coop's Avatar
 
Join Date: May 2013
Location: kent , u.k
Posts: 519
Default Re: 39 ford flathead

Sponsored Links (Register now to hide all advertisements)
I reckon its backfiring on deceleration , just a guess
37coop is offline   Reply With Quote
Old 08-21-2013, 09:20 PM   #7
brentom
Junior Member
 
Join Date: Dec 2010
Location: NJ
Posts: 18
Default Re: 39 ford flathead

Quote:
Originally Posted by jrhaelig View Post
Hey -

Where in NJ are you?

I am in Bridgewater - not too far from any place.

If it's running on the squirts it could be that you lost prime on your fuel line/pump.

I had that on my 39 pickup.

The cork gaskets on the sediment bowl are always suspect. Any air in the fuel sediment bowl will break that prime.

Clogged line or aftermarket filter could also be part of the problem.

Let me know..............
I'm in highland lakes nj, appreciate your feedback I will follow up in the am with your suggestions

Tom
brentom is offline   Reply With Quote
Old 08-21-2013, 09:22 PM   #8
brentom
Junior Member
 
Join Date: Dec 2010
Location: NJ
Posts: 18
Default Re: 39 ford flathead

Quote:
Originally Posted by 37coop View Post
I reckon its backfiring on deceleration , just a guess
Yes back fires on deceleration
brentom is offline   Reply With Quote
Old 08-22-2013, 03:15 AM   #9
Mart
Senior Member
 
Mart's Avatar
 
Join Date: May 2010
Location: Solihull, England.
Posts: 8,732
Default Re: 39 ford flathead

While obviously not able to provide a definitive answer, it may be something to do with the idle circuit or main jets being blocked. If it was the fuel pump, there wouldn't be any fuel in the accelerator pump to give a squirt. Does it keep running if you jiggle the pedal, thereby maintaining a series of short squirts?

Mart.
Mart is offline   Reply With Quote
Old 08-22-2013, 08:34 PM   #10
brentom
Junior Member
 
Join Date: Dec 2010
Location: NJ
Posts: 18
Default Re: 39 ford flathead

ok gents, i will post after i take some of the suggestions, been busy at work, maybe tomorrow evening or sat.
brentom is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 06:32 PM.