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 07-06-2019, 08:57 PM   #1
jhazewin
Junior Member
 
Join Date: Feb 2017
Posts: 1
Default 49 Flathead starting problem

I have a 1949 flathead 239 that used to run very well. The truck sat for a few years and the engine froze up. After a some Mystery Oil and a lot of patience, I was able to free it up. However after considerable effort I have been unable to bring it back to life. It was converted to 12v.

I installed a new MSD distributor, coil, plugs and wires. The motor spins freely, I have good spark. The carb has been cleaned and a new fuel pump installed.

I have checked the timing with a timing light (while cranking since it does not run) and number #1 fires with the timing mark on the pulley. When that did not work I rotated 180 degrees without success.

There is no "pop", no backfire, nothing other than cranking.

When I pull a plug it is not fouled and I can smell fuel.

Any ideas?

I would love to have this roar back to life.
jhazewin is offline   Reply With Quote
Old 07-06-2019, 09:03 PM   #2
philipswanson
Senior Member
 
Join Date: Oct 2015
Location: Bonita, CA
Posts: 1,339
Default Re: 49 Flathead starting problem

Quote:
Originally Posted by jhazewin View Post
I have a 1949 flathead 239 that used to run very well. The truck sat for a few years and the engine froze up. After a some Mystery Oil and a lot of patience, I was able to free it up. However after considerable effort I have been unable to bring it back to life. It was converted to 12v.

I installed a new MSD distributor, coil, plugs and wires. The motor spins freely, I have good spark. The carb has been cleaned and a new fuel pump installed.

I have checked the timing with a timing light (while cranking since it does not run) and number #1 fires with the timing mark on the pulley. When that did not work I rotated 180 degrees without success.

There is no "pop", no backfire, nothing other than cranking.

When I pull a plug it is not fouled and I can smell fuel.

Any ideas?

I would love to have this roar back to life.
Pull a plug. Position it to a good ground and crank it. See if you have spark. See if the accelerator pump is spraying down the throat. Go from there.
philipswanson is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 07-06-2019, 09:50 PM   #3
Bob C
Senior Member
 
Join Date: May 2010
Location: So Cal
Posts: 7,721
Default Re: 49 Flathead starting problem

Did you drain the old gas??


Bob
Bob C is offline   Reply With Quote
Old 07-07-2019, 12:45 AM   #4
flatheadmurre
Senior Member
 
flatheadmurre's Avatar
 
Join Date: Apr 2015
Location: Sweden
Posts: 3,045
Default Re: 49 Flathead starting problem

Check compression...might be valves stuck.
Or take the plugs out and with a flashlight look at valves while cranking and check if all is moving free and smooth.
flatheadmurre is offline   Reply With Quote
Old 07-07-2019, 06:18 AM   #5
ponymare
Senior Member
 
Join Date: Sep 2014
Posts: 142
Default Re: 49 Flathead starting problem

Sounds like it doesn't have much or any compression from cyl's. being washed clean. Pull plugs, then pull the truck around the block in high gear. Put a ts of motor oil in each cyl. replace the plugs and pull I again in high gear, if getting fire it will start.
ponymare is offline   Reply With Quote
Old 07-07-2019, 06:32 AM   #6
Frank Miller
Senior Member
 
Frank Miller's Avatar
 
Join Date: May 2010
Location: Auburn, MA
Posts: 2,012
Default Re: 49 Flathead starting problem

Sponsored Links (Register now to hide all advertisements)
I have seen where setting motors with dry cylinders failed to start. A little oil in the spark plug hole to seal the rings did the trick. You may have stuck valves as well. A leakdown test will tell you which ones may not be closing.
__________________
“The technique of infamy is to start two lies at once and get people arguing heatedly over which is true.” ~ Ezra Pound
Frank Miller 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 01:40 AM.