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REDEYE50 · 08-23-2017, 08:08 AM

We just purchased a 1992 Winnebago Adventure 34Q, 454 P30 chassis Chevy . We made 2 trips(1400 mi & 600 mi). On the way home the engine started cutting out and loosing power and died. Let it set for awhile and it started again but did not want to idle without pumping the pedal. Finally got it running and up to speed 65 mph, it ran for about 30 miles and the same thing happened again. Finally made it home 4hrs later. Let it set over night tried to start it the next morning, still would not idle w/o pulsing. I was sure it is a fuel problem. I changed the fuel filter, it had alot of junk in it looked like choclate milk. Still did not help . I believe it is a weak fuel pump. I have heard about cutting a access door under the bed to reach the tank. My question is what is there to under the carpet that I would have to remove? Anyone tried this? Also I found fuel pumps & sending units for sale but none were for a 78 gal tank.

fast_st · 08-23-2017, 09:59 AM

Quote:

Originally Posted by REDEYE50

. I believe it is a weak fuel pump. I have heard about cutting a access door under the bed to reach the tank.

Before cutting, it might be an idea to verify this fuel pressure. Is this unit EFI or carb? Local autoparts stores will sometimes loan or rent for free diagnostic tools. Could be a fuel contamination problem possibly?

Soppy · 08-23-2017, 05:42 PM

Its quite possible the screen on the pump is plugged. Sounds like the tank has dirt or rust in it. It should be removed and cleaned out . Just replacing the pump may only work for a short time.

REDEYE50 · 08-23-2017, 05:43 PM

Quote:

Originally Posted by fast_st

Before cutting, it might be an idea to verify this fuel pressure. Is this unit EFI or carb? Local autoparts stores will sometimes loan or rent for free diagnostic tools. Could be a fuel contamination problem possibly?

454 throttle body injection, thanks

CJ7365 · 08-23-2017, 05:47 PM

Quote:

Originally Posted by Soppy

Its quite possible the screen on the pump is plugged. Sounds like the tank has dirt or rust in it. It should be removed and cleaned out . Just replacing the pump may only work for a short time.

I have to agree with Soppy, if you had chocolate milk coming out of the old fuel filter, something is in the tank, so cutting a hole in your RV is really not solving your problem.

I would drop the tank and clean it out, then install a new pump.

STLNLUV · 08-23-2017, 08:31 PM

Before dropping the tank (which you should do anyway based on your observation) check the rubber fuel lines from the tank. At 25 years they are probably deteriorating and may be the source of some of the material in the filter.

REDEYE50 · 08-24-2017, 01:19 PM

Did everything I could so I finally took it to a mechanic!! will let you know. Thanks again

fast_st · 09-06-2017, 12:35 PM

Any update after the mech inspection?

REDEYE50 · 09-07-2017, 04:47 AM

sorry for the delay in getting back, been camping LOL. I took it to my mechanic , who tested the fuel pumpand found it had only 2-3 psi. He dropped tank and installed new pump and filter. Checked tank and found it to be clean. Should have taken it to him sooner rather than trying DIY. Only cost me $300 plus a six pack! Thanks again