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Chuck sunset 03

2003 Sunsetter monsoon fuel problems

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Chuck sunset 03

I have an 03 Sunsetter lxi with Monsoon 335. It was really hard to start the first time out, but was running fine for a few times out. It now is real sluggish and hesitates and can't get it over 24 mph. I replaced the in line fuel filter tonight and no luck.

Should I change the fuel pressure regulator and/or the high pressure fuel pump? I can hear it whining a little.

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wienrdog

The whining is likely the fuel pump not getting enough fuel to properly lubricate the pump. Since you changed the fuel filter already, you could also look in the inlet to the bottom of the fuel pump. There is a fine screen there that will sometimes catch particle and partially block the fuel line pump too.

You may want to put a pressure gauge on the fuel rail to make sure you're looking at the right thing.

The fuel pump is a pricy part to just swap out for diagnosis.

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Chuck sunset 03

Whistling.gifWhistling.gif

I'll try that. Is the screen visable?

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soundsetter

my 99 sunsetter has two filters. one at the fuel tank on top and the other at the engine. i replace both of mine every year.

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wienrdog

You'll need a mirror and flashlight to see it, but it is easily visible.

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VinRLX
You'll need a mirror and flashlight to see it, but it is easily visible.

ROFL.gif You'll need a mirror, flashlight, night-vision goggles, a magnifying glass, and a jeweler's eyepiece--but it is easily visible.

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WakeGirl

Whining generally means that the pump is on its way out. We had this very problem with baumer's boat over the weekend - new pump, runs like a top. It's a very common problem with Bu's up to 2004 model year as I recall.

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electricjohn

Check that screen, and if it looks good, run a fuel pressure test with a fuel pressure system tester.

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