Vapor lock March 25, 2014, 10:13:50 am Yahoo Message Number: 145463I have 1992 Rv with A 460 ford motor. My problem is when pulling a grade in the afternoon the motor will stall and die. This has happened a few times. If I let it sit for a half hour it will start and run fine. I have had the fuel system checked and replaced the filter changed. I have gone through the Ingnation system checked and replaced the relay nobles. Has anybody ever had this problem. PS temperature gage never goes past have way.
Re: Vapor lock Reply #1 – March 25, 2014, 10:35:51 am Yahoo Message Number: 145464Fuel pump acting up intermittently?
Re: Vapor lock Reply #2 – March 25, 2014, 10:42:08 am Yahoo Message Number: 145466I seem to recall having this problem on a 79 Dodge 440 motorhome when claiming a grade especially in warmer weather. The information I received from a mechanic was to check the fuel line and make sure it wasn't routed near any of the engine parts where excessive heat was being emitted. This would include the exhaust manifold and/or header system if you have one. I believe their is a heat wrap for the fuel line for these areas. Just a thought. Not sure what your mechanic did to check the fuel system or if this was considered. Good luck, john leach-- ColoradoOn Tuesday, March 25, 2014 7:15 AM, "bopanana@..." wrote:
Re: Vapor lock Reply #3 – March 25, 2014, 10:56:59 am Yahoo Message Number: 145467It's most likely your fuel pump. Look through the archives for more info. This problem is most noticeable on warm days with less than 3/8th of a tank. The fuel pump is a known problem. Good luck, Victor
Re: Vapor lock Reply #4 – March 25, 2014, 11:24:12 am Yahoo Message Number: 145469"It's most likely your fuel pump. Look through the archives for more info." It does sound like a weak fuel pump, a common problem in older, higher mileage rigs. A good mechanic will have a fuel pump pressure tester that can be used while the engine is running. The pump needs to produce and maintain specified amount of pressure in all operating conditions, including uphills on hot days. It's possible, using a pressure gauge, to monitor the pressure under actual driving conditions, allowing the LD to be driven while the pump's pressure is monitored. This can show if the fuel pump's supply of fuel is insufficient on long climbs. It might also there is not a problem with the pump, with the problem being elsewhere. A correct diagnostics of the problem is the proper way of resolving the problem, throwing new parts at it and hoping they fix the problem isn't. If the pump is the problem, for best reliability, please stay away from Airtex products. I prefer Bosch fuel pumps and so do many pro mechanics.Larry
Topic: Vapor lock (Read 5 times)
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Topic: Vapor lock (Read 5 times)
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