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07-06-2019, 08:57 PM | #1 |
Junior Member
Join Date: Feb 2017
Posts: 1
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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. |
07-06-2019, 09:03 PM | #2 | |
Senior Member
Join Date: Oct 2015
Location: Bonita, CA
Posts: 1,374
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Re: 49 Flathead starting problem
Quote:
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07-06-2019, 09:50 PM | #3 |
Senior Member
Join Date: May 2010
Location: So Cal
Posts: 8,747
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Re: 49 Flathead starting problem
Did you drain the old gas??
Bob |
07-07-2019, 12:45 AM | #4 |
Senior Member
Join Date: Apr 2015
Location: Sweden
Posts: 3,045
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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. |
07-07-2019, 06:18 AM | #5 |
Senior Member
Join Date: Sep 2014
Posts: 160
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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.
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07-07-2019, 06:32 AM | #6 |
Senior Member
Join Date: May 2010
Location: Auburn, MA
Posts: 2,106
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Re: 49 Flathead starting problem
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