1993 Fleetwood Bounder stalling problems

[iamgtetzky]

Hi. New to this forum thing...lol. I have a 1993 Fleetwood Bounder with a 460. Over the last few years I've had the same issue. When I start to climb a hill in the summer the RV starts popping and losing power and then dies. I let it sit for 45 minutes or so and it starts and runs fine. The engine itself does not register as hot.
It runs all day when it's cool or under 80° or so but as soon as it gets hot out and going up a hill under power it does the shutting down thing. Ive done a tune up (plugs,wires and distributor cap) oil change,* new batteries (house and engine)fuel filter and even removed the catalytic converter!* The engine only has 28000 original miles. Everything on/in the RV works. I'm at a loss to why this is happening. Any thoughts/help would be appreciated.....

[BFlinn181]

Any issue where the engine loses power and stalls then takes a cooling down period before you can restart it, sounds like fuel starvation. It could be a weak fuel pump, but you say it's been happening for a while. Next would be vapor lock. Trace the route of the fuel line from the tank to the engine. It might be close to the exhaust and getting hot enough to 'boil' the gas and prevent proper flow. Insulating or shielding the fuel line might prevent the fuel heating. I'd also hook up a fuel pressure gauge and monitor the pressure, especially when it stalls again. Low fuel pressure also contributes to vaporization. If you have two fuel pumps, one in the tank and a second in the line, I'd suspect the pump in the tank is weak.

[Bob_C]

Wood clothes pins also work for vapor lock problems....