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How do I bleed the fuel line on a 1990 Fleetwood Southwind Class A motorhome with a 7.5L (460ci) Ford engine?
I have a 1990 Fleetwood Southwind Class A motor home on a Ford chassis with a 460ci engine and fuel injection. I replaced the fuel filter. Now it won't start. Cranks fine but won't fire. I assume there is air in the line preventing fuel from going into the injectors. A mechanic told me there is a Schraeder valve to bleed the fuel line. Can anyone tell me how to find it or how to bleed the fuel line if no Schraeder valve exists?
2 Answers
- PeterLv 51 decade agoFavorite Answer
You didn't mention what length your RV is, I am going to assume a 32' which is an average size for a Southwind. Even with the extra distance your pump has to push the fuel, I doubt this is your problem unless you have a very weak fuel pump. Some RV's have a secondary fuel pump to help with that extra distance.
To answer your question, the Schrader valve you are looking for is under the engine cover/dog house. Its basically at the top of the engine. Look for the fuel lines coming up from the bottom rear and follow those. You should be able to trace it to the Schrader valve. The reason I dont think this will help you is: every time you crank the engine over, your 8 injectors should be opening and closing as the fuel pump is pushing fuel; thus pushing any air in the lines through and out the injectors. They are essentially acting as 8 little bleeders. But, there is a first for everything, maybe you will get lucky and bleeding the S. valve will work. If you do get fuel to come out of it, BE CAREFUL. The fuel will be very close to the Distributor cap and coil. Ford Distributor caps are not vapor tight. Meaning spark and fuel = FIRE!
If not, you will have to get into testing for spark and fuel.
Good luck with it. Let me know the outcome.