|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
06-07-2023, 02:21 PM | #1 |
Senior Member
Join Date: May 2010
Location: Essex Vermont
Posts: 601
|
hard start only when hot
My 59ab doesn't start well when at temp. Engine starts cold instantly but once at driving temp (180) it will just crank and crank unless I feed it fuel with pedal. carb is rebuilt 97. engine is stock. fuel pump rebuilt and fuel flex line has a check valve. I thought about trying a carb riser. car is 12v and resister under dash has been removed, coil has built in resister. ignition is bubba built and runs super. Any suggestions welcome. thanks Ken
Last edited by Ken Arms; 06-07-2023 at 02:26 PM. |
06-07-2023, 03:15 PM | #2 |
Senior Member
Join Date: May 2010
Location: From Chicago. Now Nashville
Posts: 209
|
Re: hard start only when hot
Make sure your accelerator pump rod is on the summer setting.
__________________
Cars and metal rust away and are destroyed, but the Word of God will stand forever (Isaiah 40:8, Matthew 24:35). |
Sponsored Links (Register now to hide all advertisements) |
|
06-07-2023, 03:22 PM | #3 | |
Senior Member
Join Date: May 2010
Location: Wisconsin, USA
Posts: 9,033
|
Re: hard start only when hot
Quote:
You should see two streams of fuel, first time you pump it. Let us know what you witness and we will better equipped (knowledge) to go from there.
__________________
"I can explain it for you. However, I can't understand it for you". |
|
06-07-2023, 03:23 PM | #4 |
Senior Member
|
Re: hard start only when hot
Ken is it a points ignition ,has the coil been on there a long time ,change coil .
|
06-07-2023, 04:05 PM | #5 |
Senior Member
Join Date: Dec 2014
Location: Fort dodge, Iowa
Posts: 834
|
Re: hard start only when hot
I would prefer a coil without a resistor and have the resistor ahead of the coil. Then you can have a bypass wire around the resistor to the coil when the engine is cranking. JMHO. I had this same problem years ago on a different brand. It was an instant cure for the hot/no start.
|
06-07-2023, 04:33 PM | #6 |
Senior Member
Join Date: Jun 2016
Location: Pahrump, NV
Posts: 379
|
Re: hard start only when hot
Sponsored Links (Register now to hide all advertisements)
|
06-07-2023, 05:22 PM | #7 |
Senior Member
Join Date: May 2010
Posts: 427
|
Re: hard start only when hot
I had the same problem on a 221 Ford with stromberg carbs and the coil was rebuilt and still had the hot hard start problem. I put 4 -5 gaskets under the carb and installed cupped core plugs in the exhaust cross over. Now starts instantly cold or hot. If you floor the accelerator when hot, does that make it start quicker? If so, carb is toooo hot. I note you are in Vermont and my solution of blocking the exhaust cross over will not work well at temps below 50degs F. I think heat is the root of your problem.
|
06-08-2023, 01:01 PM | #8 |
Senior Member
Join Date: May 2010
Location: Essex Vermont
Posts: 601
|
Re: hard start only when hot
Thanks everyone, kube I did try pumping when hot with no improvement. Got my carb riser today so I will report back.
|
06-09-2023, 06:44 AM | #9 |
Senior Member
Join Date: May 2010
Location: Lithia, FL
Posts: 1,052
|
Re: hard start only when hot
I agree-try changing out the coil first.
__________________
If it aint broke, don't fix it! |
08-04-2023, 02:49 PM | #10 |
Senior Member
Join Date: May 2010
Location: Essex Vermont
Posts: 601
|
Re: hard start only when hot
up date, the carb riser has fixed my issue. Starts up with just a bump now when hot. Ken
|
08-04-2023, 03:14 PM | #11 | |
Senior Member
Join Date: May 2010
Location: Southern Illinois
Posts: 3,817
|
Re: hard start only when hot
Quote:
I have a driver '47 that I experienced the same issues in. My ignition system was operating 100%. Skip rebuilt coil, 3rd Gen rebuilt distributor, new wires... I insulated the gas line coming up from the firewall to the fuel pump. Then I installed an insulator carb riser. This soved my issue. Ford did not do this. I wasn't alive 80 years ago so I can say for sure, however I doubt this was an issue at that time. We should not have to do this to ensure reliability. Ethanol fuel is by far one of the worst things you can run in an engine. Modern fuel injection will put up with it. Anything with a carburetor will not. Not my lawn and outdoor power equipment, antique tractors, old Ford. I keep pure gas on hand at my home for these types of applications. If I'm out on a long drive, I will inevitably have to fill up with enthanol gas. I hate it but have done all that I can to prevent issues. A good friend of mine recently ran E85 in a flex fuel engine. One week of it caused an entire day in the shop for repairs to sensors. Ethanol is a fleecing. |
|
08-05-2023, 07:41 PM | #12 |
Senior Member
Join Date: Sep 2016
Location: sydney australia
Posts: 1,037
|
Re: hard start only when hot
again we are dealing with two totally different fuels . there is nothing wrong with either when used as they where designed older style fuels were designed to sit in open containers (ie carb bowls and vented fuel tanks] where as alcohol fuels [ethanol blends] are designed to be kept in enclosed systems [ie injection with pos/neg pressure vent tanks ] so when ethanol is left open it tends to evaporate off as it has a lower boiling point that is compensated by the pressure in the closed system so keeping it as cool as possible in paramount
|
08-06-2023, 03:04 AM | #13 |
Junior Member
Join Date: Jul 2020
Location: france
Posts: 26
|
Re: hard start only when hot
Hi all,
i had the same issue on my 37 when i bought it. when was hot if i stop the engine i was obliged to pump several time with accelerator to run... I measured temp at fuel pum and carb and found more than 60°C. I solved the problem by closing the two holes in intake manifold with 2 little metal sheets and adding a big seal (5mm) between the carb and the intake manifold. |
08-06-2023, 01:51 PM | #14 | |
Senior Member
Join Date: May 2015
Posts: 8,311
|
Re: hard start only when hot
Quote:
__________________
The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 |
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|