Why vapor lock now?!

[chuckstp]

I carry around an old rag, and if I am going to park for very long, get it wet and wrap it around the carburetor at the bowl. This has worked well for me. The only times I remember getting vapor lock since starting to do that is when I forget.

I've gotten the wait time to go away down to a minute or so as well. I've still got a mechanical fuel pump. I remove the fuel line from the carburetor, and direct it into the throat of the carb after removing the hose from the air filter. Then I actuate the fuel pump. If it do this quickly, it doesn't work, but if I pump it slowly, it begins to draw gas. After getting one or two squirts in the carbeurator, I lite it up. Taking advice from a few other people, I also choke it and rev the engine when starting. If it stays lit, the choke comes off, and I'm geared to go.

[slowmo]

Been driving for a week now with the new electric fuel pump. No vapor lock. Problem solved? Time will tell.

[lumpydog]

Been driving for a week now with the new electric fuel pump. No vapor lock. Problem solved? Time will tell.

So I'm going to try something different. I really want to keep the original fuel pump. My symptoms are consistent with the vapor lock occurring in the fuel pump - the truck runs for a bit before shutting off/vapor locking up and I can pull the fuel line and manually pump/clear the vaporized fuel and be on my way. But on a hot day, taking the 5 minutes to do that is sweat-inducing PITA.

A cure for vapor lock that is used often is to simply dump cold water onto the pump (or carb if it's occurring in the carb). This I'm told works extremely well and instantly clears up this problem.

I'm going to carry around a can of this: http://www.amazon.com/gp/product/B00...ilpage_o01_s00

If the truck vapor locks up, I'll spray the exterior of the fuel pump with it. Since this only happened to me three times this summer, I figure a can of the stuff stashed under the driver's seat will last at least 3-4 years and it's a pretty portable/quick fix. It's safe for electronics - so I'm sure it will be fine on any rover parts… I'm aware of the risk of taking parts from one extreme temperature to another, but I'm guessing a little spray will do the job without icing down the pump to an extreme and causing it to crack. I just need to see how the spray atomizes and how I can make sure it doesn't drop the pump's temperature so dramatically that it causes cracking problems. Other option is compressed air - maybe safer?

I'm not sure there will be any more stifling hot days this summer, where I park in the direct sun and return after 15 minutes… But if it happens, I'll try this and will report back here.

[SafeAirOne]

A cure for vapor lock that is used often is to simply dump cold water onto the pump (or carb if it's occurring in the carb). This I'm told works extremely well and instantly clears up this problem.

I'm going to carry around a can of this...

I just need to see how the spray atomizes and how I can make sure it doesn't drop the pump's temperature so dramatically that it causes cracking problems. Other option is compressed air

Why not just carry a bottle of water? You only need to bring the temp below the condensation point of alcohol. Or gasoline. Or whatever you guys are burning nowadays.