When engine is warm, truck won't re-start

[SeattleRRC]

After I drive the car and get it to temperature, then let it sit for around 20-30 minutes, it won't start. The engine turns over fine but the car doesn't get any fuel, it just sputters out no matter how much gas I give it. After sitting by the side of the road for a long time and then trying to start the car while pumping the gas pedal like crazy the truck will eventually start and come back to life and all is well again. This only seems to happen on warm days, and in Seattle warm is only high 70s.

Any ideas? Bad Fuel Pump? Vapor Lock?

[SeattleRRC]

...and if it is vapor lock what do you guys recommend to fix this?

-install electronic Defender fuel pump in the tank?
-protect fuel lines in engine compartment with a heat shield?
-install insulated fuel lines in engine compartment?
-install electric fan in engine compartment?

Thoughts?
There are probably pros/cons besides just the cost of these different options.
Thanks!

[Smokey Mountain Man]

Your coil might be dieing. When an old coil gets to hot it will not provide enough spark to ignight the fuel. And then when you crank it and pump the throtle the carb gets flooded making a bad situation worse. Or there could be crap in your carb. Do you have an inline filter? Take the top off of your carb and see if there are any gremlins in it "Like gas residew,dirt,bug nests and other such things that are not supposed to be in there. If there is residew"yellowy crusty stuff" dump some Barrymans Chemtool in and let it soak for a while and then dump that stuff out. If you have any of the Chemtool left in the can dump that into your fuel tank. Hope this works for you.

[Bmohan]

Mine did that for a while, I rerouted the fuel line (it was going across the top of the engine instead of in front) and that pretty much solved the problem. My thought is that I was creating a bit of a vapor lock. I don't think it needs to be too hot for this to happen. When it died I would disconnect then reconnect the fuel line while slipping in a different inline fuel filter and use full choke w/o pumping gas to get it eventually going. No reoccurrence since reroute.

[SeattleRRC]

Its not the coil, I had a new coil put in 2005.

Bmohan, are you using a genuine fuel pump or aftermarket?
Mine's not original, it looks to be Pro-Line or something.
I'll take a look at where my lines are passing through tonight.

[Bmohan]

I have a pro-line fuel pump, new from Rovers North. I read where they had a bad batch a while back so hopfully the problem was corrected. Also have a back up one that I rebuilt under the seat. Another thing I changed was to relocate the in-line fuel filter (NAPA clear) to right in front of the carb so I can see if I've got fuel flow.

[wolfman1755]

Hi Mate,
Wayne here from Australia. My series 2a did that for a while so i took it to the landy mechanic and he checked the mixture screw and found it to be too lean. When the motor is warm and running, screw the idle down as low as it will go and keep running. Then play with the mixture screw and set it where it runs good and then reset your idle screw to about 800 rpm and it should be fine.