The Ford Barn

Dave Beadles · 07-06-2013, 07:00 PM

OK Brains... time to work....

A week ago (maybe unrelated) my truck was losing power - missing - I regapped the points (yes, needed it) and retimed. Running fine. Wednesday (hot day 95) got to a destination and as I pull up, SERIOUS loss of power. 29 sat for an hour, started up, got 5-6 blocks away and serious loss of power. Got it home, replaced condenser after engine cooled, took for a test drive (short) no problem - plenty of power!

On the way to Lowes today, about a mile or so from home, loss of power (not quite as bad, but temp only 84, lost of humidity, too). On the way home I try accelerating, pull choke out all the way and when engine recovers, seems to be ok. Made it home, got out Les Andrews, took it for another short test drive and loss of power. (Tho I can accelerate when NOT under load and there is NO hesitation.) Swapped in rebuilt carb, took for test drive and once up to operating temp again, loss of power BUT not quite as bad. Pulling choke temporarily causes smooth, powerful running for a short time. Seems to be plenty of gas from gas line to . Engine has less than 2000 miles since being rebuilt.

Suggestions? Miracle cures?

Thanks!!!! Dave :-)

christian · 07-06-2013, 07:04 PM

Vacuum leak somewhere? Causing it to run super rich with the choke would counteract a leak somewhere in the intake I would think.

Phil · 07-06-2013, 07:15 PM

You say gas flow good to engine. Have you checked when the car is acting up. May be getting crud stunk in the shut off valve. When it starts to act up, pull over, take the fuel line loose and let the gas flow into a coffee can ect, and check the flow for several seconds. Although the choke seems to help points to fuel you might try another coil, it may be getting hot and breaking down.

BRENT in 10-uh-C · 07-06-2013, 07:20 PM

Like I said on Facebook, I am suspecting faulty coil.

Fred K-OR · 07-06-2013, 07:32 PM

I would think coil also. Not the expert on this sort of thing but if you have another coil handy, may try putting it on.

bogdonj · 07-06-2013, 08:36 PM

Sponsored Links (Register now to hide all advertisements)

Coil issue!

Duffy1 · 07-06-2013, 08:53 PM

Is gas cap venting?

Tom Wesenberg · 07-06-2013, 08:58 PM

I usually see coils fail when hot but work OK cold, but I'm also thinking this could be an ethanol issue, if you are using the 10% crap gas.

Purdy Swoft · 07-06-2013, 09:16 PM

I'm thinking the same as Tom .

mpalilonis · 07-06-2013, 10:37 PM

Defiantly sounds electrical if all of a sudden it started happening. Mine did this similar thing and it was the modern distributor plated that screwed things up. So I had my mechanic change out the plate to the original style and everything was fine again.

Mike V. Florida · 07-06-2013, 11:24 PM

I have a '32 coil that work great cold but after a warm up it acts up. My vvote is coil.

Ed Saniewski · 07-07-2013, 06:49 AM

This sure sounds like the same problem a few of us had in Lexington during the MARC meet with bad gas. If you have a glass sediment bowl, what does it look like? We all ended up with water mixed in the gas that had started to separate after filling the cars and parking them for a day.

Mitch//pa · 07-07-2013, 09:01 AM

Quote:

Originally Posted by Ed Saniewski

This sure sounds like the same problem a few of us had in Lexington during the MARC meet with bad gas. If you have a glass sediment bowl, what does it look like? We all ended up with water mixed in the gas that had started to separate after filling the cars and parking them for a day.

i would be giving that gas station a call or visit

Ed Saniewski · 07-07-2013, 01:22 PM

Sent an email to the corp. headquarters. Will see what they say.

marc hildebrant · 07-07-2013, 02:00 PM

Vapor Lock,

Try adding Marvel Mystery Oil to your gas (use recommended amount on MMO).

Marc

07-06-2013, 07:00 PM	#1
Dave Beadles Junior Member Join Date: Jun 2013 Location: Colorado Springs Posts: 7	Loss of power... stumbling ford... OK Brains... time to work.... A week ago (maybe unrelated) my truck was losing power - missing - I regapped the points (yes, needed it) and retimed. Running fine. Wednesday (hot day 95) got to a destination and as I pull up, SERIOUS loss of power. 29 sat for an hour, started up, got 5-6 blocks away and serious loss of power. Got it home, replaced condenser after engine cooled, took for a test drive (short) no problem - plenty of power! On the way to Lowes today, about a mile or so from home, loss of power (not quite as bad, but temp only 84, lost of humidity, too). On the way home I try accelerating, pull choke out all the way and when engine recovers, seems to be ok. Made it home, got out Les Andrews, took it for another short test drive and loss of power. (Tho I can accelerate when NOT under load and there is NO hesitation.) Swapped in rebuilt carb, took for test drive and once up to operating temp again, loss of power BUT not quite as bad. Pulling choke temporarily causes smooth, powerful running for a short time. Seems to be plenty of gas from gas line to . Engine has less than 2000 miles since being rebuilt. Suggestions? Miracle cures? Thanks!!!! Dave :-)

07-06-2013, 07:04 PM	#2
christian Senior Member Join Date: Aug 2012 Location: Central NJ Posts: 238	Re: Loss of power... stumbling ford... Vacuum leak somewhere? Causing it to run super rich with the choke would counteract a leak somewhere in the intake I would think. __________________ 1931 Slant Windshield fordor

07-06-2013, 07:15 PM	#3
Phil Senior Member Join Date: May 2010 Location: Bethany, Ok Posts: 382	Re: Loss of power... stumbling ford... You say gas flow good to engine. Have you checked when the car is acting up. May be getting crud stunk in the shut off valve. When it starts to act up, pull over, take the fuel line loose and let the gas flow into a coffee can ect, and check the flow for several seconds. Although the choke seems to help points to fuel you might try another coil, it may be getting hot and breaking down.

07-06-2013, 07:20 PM	#4
BRENT in 10-uh-C Senior Member Join Date: May 2010 Location: Eastern Tennessee Posts: 11,508	Re: Loss of power... stumbling ford... Like I said on Facebook, I am suspecting faulty coil. __________________ . BRENT in 10-uh-C . www.model-a-ford.com ...(...Finally Updated!! ) .

07-06-2013, 07:32 PM	#5
Fred K-OR Senior Member Join Date: May 2010 Location: Stayton, Oregon Posts: 3,806	Re: Loss of power... stumbling ford... I would think coil also. Not the expert on this sort of thing but if you have another coil handy, may try putting it on. __________________ Fred Kroon 1929 Std Coupe 1929 Huckster

07-06-2013, 08:36 PM	#6
bogdonj Senior Member Join Date: Aug 2010 Location: Walkerton, Ont. Canada Posts: 623	Re: Loss of power... stumbling ford... Sponsored Links (Register now to hide all advertisements) Coil issue! __________________ _________________________________________ 1931 Ford Model A Tudor 1930 Ford Model A Deluxe Roadster 1930 Ford Original Rolling Chassis- Restoring

07-06-2013, 08:53 PM	#7
Duffy1 Senior Member Join Date: May 2012 Location: Mo. City , Texas Posts: 725	Re: Loss of power... stumbling ford... Is gas cap venting?

07-06-2013, 08:58 PM	#8
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Loss of power... stumbling ford... I usually see coils fail when hot but work OK cold, but I'm also thinking this could be an ethanol issue, if you are using the 10% crap gas.

07-06-2013, 09:16 PM	#9
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: Loss of power... stumbling ford... I'm thinking the same as Tom .

07-06-2013, 10:37 PM	#10
mpalilonis Member Join Date: Dec 2010 Location: Philadelphia, Pa Posts: 62	Re: Loss of power... stumbling ford... Defiantly sounds electrical if all of a sudden it started happening. Mine did this similar thing and it was the modern distributor plated that screwed things up. So I had my mechanic change out the plate to the original style and everything was fine again.

07-06-2013, 11:24 PM	#11
Mike V. Florida Senior Member Join Date: May 2010 Location: South Florida Posts: 14,054	Re: Loss of power... stumbling ford... I have a '32 coil that work great cold but after a warm up it acts up. My vvote is coil. __________________ What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II

07-07-2013, 06:49 AM	#12
Ed Saniewski Senior Member Join Date: May 2010 Location: Denville NJ Posts: 964	Re: Loss of power... stumbling ford... This sure sounds like the same problem a few of us had in Lexington during the MARC meet with bad gas. If you have a glass sediment bowl, what does it look like? We all ended up with water mixed in the gas that had started to separate after filling the cars and parking them for a day. __________________ Model A Ford Club of New Jersey http://www.mafcnj.org Model A Pick Up Owners and Enthusiasts https://www.fordbarn.com/forum/group.php?groupid=5

07-07-2013, 01:22 PM	#14
Ed Saniewski Senior Member Join Date: May 2010 Location: Denville NJ Posts: 964	Re: Loss of power... stumbling ford... Sent an email to the corp. headquarters. Will see what they say. __________________ Model A Ford Club of New Jersey http://www.mafcnj.org Model A Pick Up Owners and Enthusiasts https://www.fordbarn.com/forum/group.php?groupid=5

07-07-2013, 02:00 PM	#15
marc hildebrant Senior Member Join Date: May 2010 Location: Cape Cod Posts: 1,128	Re: Loss of power... stumbling ford... Vapor Lock, Try adding Marvel Mystery Oil to your gas (use recommended amount on MMO). Marc