Vapor lock?
 

I can get my 1933 model b to run for 20 to 30 minutes then it shuts down.
I have trouble starting again when it shuts down. I must pour gas into the carb to restart the engine several times to get it running again. Is this vapor lock?

Re: Vapor lock?
 

Sounds more like a bad coil/condenser to me. What temperatures are you reading when this happens?

Re: Vapor lock?
 

I am thinking that the fuel pump is getting weak and can not produce enough fuel pressure to overcome the heat.
Vic

Re: Vapor lock?
 

Have you tried removing the gas cap when it happened? Is the exhaust clear with no animals that made it there home .

Re: Vapor lock?
 

will check

Re: Vapor lock?
 

Yes, it seemed to have no effect

Re: Vapor lock?
 

You could be right because I first noticed a problem when stepping on the gas and having the engine hesitate.

Re: Vapor lock?
 

Mine when acting like this was the coil.

Re: Vapor lock?
 

Thanks for your help sounds good will replace the coil...a lot easier than rebuilding a fuel pump.

Any suggestions of a good place to purchase a coil? Are they all made in china?

Re: Vapor lock?
 

Send the coil you now have (it must be an original Ford coil) to Skip Haney and have him rebuild it.

Skip Haney
29436 Taralane Drive
Punta Gorda, FL 33982
Tel. 941-505-9085

Re: Vapor lock?
 

Check the spark with the engine cold. That is, pull a spark plug wire and see if when cranking it will give you a blue or white spark that will jump half an inch. If weak and yellow, try a new condenser, and then a new coil. If good when cold, run the car until it starts to stumble or will not restart, then check the spark jump again. Failure with heat is usually the coil, sometimes the condenser.



Nextt consider the flexible fuel line from the firewall to the fuel pump. If even slightly swollen or cracked, replace. Or maybe take it off and see if you can blow through it quite freely.


Then maybe test the fuel pump? Disconnect the fuel line from the carburetor, have some one crank the engine (Ignition off!!) while you watch (and catch in a cup) what comes out of the fuel line. It should spurt a good teaspoon with each stroke. If it dribbles, check the fuel sediment bowl is tight and has a good gasket. If that is not it, you may need to rebuild the fuel pump. It is really not that hard.

Re: Vapor lock?
 

As soon as it quits pull the air cleaner and check to see that the accelerator pump is squirting fuel before you replace the coil. If it has fuel squirting than its ignition and if it not squirting its fuel. I hate to see you replace the coil only to find out it was fuel related. It could be either one of them.

Re: Vapor lock?
 

Find some non-ethanol fuel

Re: Vapor lock?
 

where do you buy that? Maybe aviation fuel?

Re: Vapor lock?
 

Depending on where you live it varies. I am in the lakes area of north central Minnesota, and it is available everywhere because this is boating country. Even the convenience stores have at least one pump dedicated to it. I am sure there are some states or areas where it is not available at all. This is another reason to post your general location in you profile.

Re: Vapor lock?
 

thanks

Re: Vapor lock?
 

Thanks I will contact Mr Haney

Re: Vapor lock?
 

https://www.youtube.com/watch?v=I-sT5vHnYNE
sorry, I couldn't help myself

Re: Vapor lock?
 

Frank has not mentioned that his 33 Ford is a 4 cylinder so rebuilding the coil is not an option. Regards, Kevin.

Re: Vapor lock?
 

you could by pass the mechanical pump and try a electric pump
Vic