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toyotaspeed90's avatar
May 06, 2013

1984 Fleetwood Jamboree E350 - fuel pump / filter?

Hellow all - new to the forum and new to RV ownership. Not new to mechanics. Picked up this RV from a family friend about a year ago but it made it's maiden voyage to our house (about 130 miles) yesterday.

What we knew: The last time it was used the last ~20 miles it wouldn't go over 25mph. It was a hot day. Previous owners were cheap - used cheapest gas possible.

1984 original 460, C6, light maintenance done, Holley 4 barrell 96k miles, previous to the 1 issue none had been present.

I did some research and found that it could be carb related and/or vapor lock. Was able to get it to fire up and stay running by pouring fuel into the carb.

Fast forward... since then have:
1) Installed new cap, rotor, plugs, wires
2) had the carb rebuilt by a carb rebuilding company (had them install non Holley anti-backfire valve), convert to electric choke
3) rewired tail lights (ground was bad) - brake lights weren't getting 12v to the switch, wasn't able to locate where that comes from or a problem in the harness - so ran new 12V wire directly to the brake switch (fused)... hazards don't work because they should be on the same circuit

First trip was to a gas station about 1 mile away. Everything was fine up until about 1 block from the gas station - started to lose all power, no acceleration. Get off the gas pedal and engine would pick up a tad.

Pulled into the gas station - realizing there were no hard shifts or unnecessary revving of the engine - most likely not trans related.

Throw $30 of gas in the tank (previously just under 1/4 tank) and drove it around.... the problem resolved itself. Went back to the gas station & filled another $70... Took it on a test drive on the freeway and all was well.

Packed up and headed on the 130 mile trip. 4 points during the trip (first one was about 75 miles in or 1/3-1/2 tank later) it started to lose power, mostly when under load. Kept foot in it and the RV picked back up and kept going just fine like nothing happened. I should notate each time it happened on the drive home - it only happened for 10-20 seconds.

Got it home OK and planning a trip in about 3-4 weeks in which I plan to to an FJ40 behind (bigger load on the engine).... trying to figure out the problem.

It appears this is an in tank pump. Thoughts on what pump I can use/find? The E350's of the same year had dual tanks and different pumps. Any idea on what sock to use with the pump?

Where is the fuel filter? I replaced the in-carb filter but didn't see one along the rail anywhere (and very surprised).

What PSI should I expect in the fuel line?

I'm thinking this either has a pump going out, varnish in the tank that's clogging the pump sock, or the hidden filter is clogged....

Thoughts? Thanks!

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