Vapor lock or air lock

[misterleon]

Hey guys, I was running my 5t for a few hours yesterday on and off. I went through about 2 tanks. At the end of the day I rolled the truck and then when I flipped it over it shortly after the engine cut out. When trying to start it back up the carb wouldn’t build pressure which meant the engine wouldn’t start either. This morning I went to start it and had no issues. I’m assuming it’s either vapor lock or air lock. I’m running a 1107 and have the stock fuel tank with the high flow fuel lines and a ddm gas cap. How do I diagnose what is wrong?

 

[Minnesota RC]

If you get it started, spray brake or carb cleaner around the gaskets. If you spray around a gasket, say between carb and intake, and the engine idle drops or dies, there's your leak.

Use caution with carb or brake cleaner around plastic parts. WD40 could also help. Check all fuel lines as well.

 

[Seandonato73]

More then likely you got your breather soaked with fuel. Which will cause a vacuum to be pulled in the tank till it drys out.

 

[misterleon]

More then likely you got your breather soaked with fuel. Which will cause a vacuum to be pulled in the tank till it drys out.

So If it happens again take the cap off and dry it out. That seems like a simple problem and solution