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 08-31-2019, 05:39 PM   #1
jacob smith
Senior Member
 
jacob smith's Avatar
 
Join Date: Nov 2014
Location: New ringgold pa
Posts: 311
Default Flathead repair

Can anyone point me in the right direction to a repair shop in north eastern PA that is really good with Flathead fords.. I can not find the issue with my 36. Runs great for about 1/2 an hour. Then is starts missing a losing power. I have replaced or repaired.

carb
Coil
Distributor
Fuel pump
Fuel filters
Condenser
Fuel lines
Plugs
Wires

I just can not find the issue.
__________________
Ford
jacob smith is offline   Reply With Quote
Old 08-31-2019, 05:54 PM   #2
19Fordy
Senior Member
 
19Fordy's Avatar
 
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,879
Default Re: Flathead repair

Have you checked for a blown head gasket?
19Fordy is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 08-31-2019, 06:16 PM   #3
jacob smith
Senior Member
 
jacob smith's Avatar
 
Join Date: Nov 2014
Location: New ringgold pa
Posts: 311
Default Re: Flathead repair

That I have not check but I have never seen oil in the radiator or water in the oil. Funny thing is if I turn the car off for 5 minutes and start it up it will run fine again but a couple of minutes later it will start acting up again. It also is not getting hot when it does this. The temp is right around 185. What ever the issue is seems to be something not related to heat because it is up to operating temp and runs fine. Seems to be something is giving out with time.
__________________
Ford
jacob smith is offline   Reply With Quote
Old 08-31-2019, 06:19 PM   #4
deuce_roadster
Senior Member
 
deuce_roadster's Avatar
 
Join Date: Oct 2011
Location: Shelton, WA
Posts: 3,779
Default Re: Flathead repair

Could be the resistor wire is broken but making contact, heats up and gets intermittent. Try hotwiring the car to the coil and see if it continues to run with no missing.
deuce_roadster is offline   Reply With Quote
Old 08-31-2019, 06:46 PM   #5
KiWinUS
Senior Member
 
KiWinUS's Avatar
 
Join Date: May 2010
Location: Charlotte NC KiWi-L100 available here
Posts: 2,947
Default Re: Flathead repair

Take off fuel cap
KiWinUS is offline   Reply With Quote
Old 08-31-2019, 07:24 PM   #6
jacob smith
Senior Member
 
jacob smith's Avatar
 
Join Date: Nov 2014
Location: New ringgold pa
Posts: 311
Default Re: Flathead repair

Sponsored Links (Register now to hide all advertisements)
I will do both at this point I will try everything
__________________
Ford

Last edited by jacob smith; 08-31-2019 at 07:31 PM.
jacob smith is offline   Reply With Quote
Old 08-31-2019, 07:25 PM   #7
daltonathomas94
Member
 
Join Date: Jun 2019
Posts: 49
Default Re: Flathead repair

I did hear a story of a guy building an engine. Got everything tuned up just right and it would cut out in a minute or so. Tore everything down 3 or 4 times to find an issue and nothing appeared. Finally, he popped off the gas cap and he was greeted by a whoosh of air into the tank and realized the cap wasn't vented right and made a vacuum in the tank pulling fuel back.

The smallest things can just slip by you some times.



Sent from my SM-G950U using Tapatalk
daltonathomas94 is offline   Reply With Quote
Old 08-31-2019, 09:08 PM   #8
Brian
Senior Member
 
Brian's Avatar
 
Join Date: May 2010
Location: Masterton, New Zealand
Posts: 3,816
Default Re: Flathead repair

One more possibility is that the heat riser in the inlet manifold has blown; as it heats up, more and more exhaust dilutes the incoming charge. I have experienced this exact problem, took me months to diagnose; i was convinced it was electrical.
__________________
Unfortunately, two half wits don't make a whole wit!
Brian is offline   Reply With Quote
Old 08-31-2019, 09:37 PM   #9
jacob smith
Senior Member
 
jacob smith's Avatar
 
Join Date: Nov 2014
Location: New ringgold pa
Posts: 311
Default Re: Flathead repair

Did it run fine when you had your foot of the gas but when you gave it gas the it would start to act up. Also does it make a sound like air going through baffles. It almost sounds like the sound that is made when you blow a horn but all you get is air thought the horn.
__________________
Ford

Last edited by jacob smith; 09-01-2019 at 05:40 AM.
jacob smith is offline   Reply With Quote
Old 09-01-2019, 07:13 AM   #10
KGS
Senior Member
 
KGS's Avatar
 
Join Date: May 2010
Location: Schooley's Mountain
Posts: 530
Default Re: Flathead repair

It could be something in the gas tank moving around
and blocking the fuel pickup tube, then releasing when

the engine is turned off.
KGS is offline   Reply With Quote
Old 09-01-2019, 09:10 AM   #11
jacob smith
Senior Member
 
jacob smith's Avatar
 
Join Date: Nov 2014
Location: New ringgold pa
Posts: 311
Default Re: Flathead repair

No I cleaned the tank also
__________________
Ford
jacob smith is offline   Reply With Quote
Old 09-01-2019, 03:29 PM   #12
Ggmac
Senior Member
 
Join Date: Jul 2016
Location: Lake worth Florida
Posts: 1,073
Default Re: Flathead repair

Quote:
Originally Posted by jacob smith View Post
That I have not check but I have never seen oil in the radiator or water in the oil. Funny thing is if I turn the car off for 5 minutes and start it up it will run fine again but a couple of minutes later it will start acting up again. It also is not getting hot when it does this. The temp is right around 185. What ever the issue is seems to be something not related to heat because it is up to operating temp and runs fine. Seems to be something is giving out with time.
Check for blocked exhaust .
Use a vacuum gauge and if it starts dropping slowly at first then steady drop till dies .
Ggmac is offline   Reply With Quote
Old 09-01-2019, 06:58 PM   #13
jacob smith
Senior Member
 
jacob smith's Avatar
 
Join Date: Nov 2014
Location: New ringgold pa
Posts: 311
Default Re: Flathead repair

I will do that also
__________________
Ford
jacob smith is offline   Reply With Quote
Old 09-01-2019, 07:14 PM   #14
Yoyodyne
Senior Member
 
Yoyodyne's Avatar
 
Join Date: Nov 2010
Location: Lancaster PA
Posts: 527
Default Re: Flathead repair

Quote:
Originally Posted by Ggmac View Post
Check for blocked exhaust .

Definitely sounds like that. Where is the air through baffles sound coming from when you hear it? Rear of the car?
Yoyodyne is offline   Reply With Quote
Old 09-01-2019, 07:59 PM   #15
jacob smith
Senior Member
 
jacob smith's Avatar
 
Join Date: Nov 2014
Location: New ringgold pa
Posts: 311
Default Re: Flathead repair

Under the hood
__________________
Ford
jacob smith is offline   Reply With Quote
Old 09-01-2019, 08:35 PM   #16
philipswanson
Senior Member
 
Join Date: Oct 2015
Location: Bonita, CA
Posts: 1,374
Default Re: Flathead repair

It's the nut behind the wheel...……………….. Just kidding.
philipswanson is offline   Reply With Quote
Old 09-01-2019, 08:44 PM   #17
jacob smith
Senior Member
 
jacob smith's Avatar
 
Join Date: Nov 2014
Location: New ringgold pa
Posts: 311
Default Re: Flathead repair

It surely has driven me nuts trying to find the issue lol
__________________
Ford
jacob smith is offline   Reply With Quote
Old 09-01-2019, 11:04 PM   #18
David Lien
Member
 
Join Date: May 2010
Location: Pocateelo Idaho
Posts: 33
Default Re: Flathead repair

Rag or water in the gas tank.
__________________
Long Range
David Lien is offline   Reply With Quote
Old 09-02-2019, 06:38 PM   #19
1948F-1Pickup
Senior Member
 
1948F-1Pickup's Avatar
 
Join Date: Oct 2015
Location: Socal
Posts: 794
Default Re: Flathead repair

^ What he said.
You've already eliminated my favorite (condenser).
1948F-1Pickup is offline   Reply With Quote
Old 09-02-2019, 06:41 PM   #20
Tinker
Senior Member
 
Tinker's Avatar
 
Join Date: May 2010
Location: MN
Posts: 7,053
Default Re: Flathead repair

Engine gets hot, it starts to misfire....


Coil and condenser. New doesn't always mean good usually.


Get a vacuum gauge on it too...


.
Tinker 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 10:51 AM.