www.iFourWinns.com
https://www.smwebhead.com/phpBB3/

Replacing low pressure fuel pump
https://www.smwebhead.com/phpBB3/viewtopic.php?f=11&t=9926		 Page 1 of 1
Author:  Technologic80 [ Wed Jul 25, 2012 6:43 pm ]
Post subject:  Replacing low pressure fuel pump
Im diagnosing a hard cold start problem on my 278 Vista with the 4.3GI (TBI) engines.

I cleaned my anti-siphon valve. It was mostly clean but there were a few small pieces of stuff in it. I took my new (1.5 months old) fuel filter and emptied it. A few particles came out. I put it back on the housing, after I refilled it with fuel.

As usual, turn the key and no priming sound from the fuel pump. It took about 3-4 tries to get the pump to come on. Boat starts, stalls right out. Starts back up and I can hear the low pressure fuel pump making this whining/electrical buzzing sound that Ive never heard before. Tap it with the handle of a screwdriver a few times and it lessens. :?: Ive always noticed that the low pressure fuel pump has always been very hot to the touch and today was no exception. The high pressure was cool to the touch.

Did I just diagnose my low pressure fuel pump failing?? Do I just unscrew the pump from the housing? Any tips?
Author:  Technologic80 [ Wed Jul 25, 2012 8:42 pm ]
Post subject:  Re: Replacing low pressure fuel pump
OK got the low pressure fuel pump OFF the engine.

Both screens really clean. Ok, next check.

I put 12v DC to the pump. It just makes a faint click sound. Shouldnt it buzz/whir??
Author:  noexcuses [ Thu Jul 26, 2012 6:52 am ]
Post subject:  Re: Replacing low pressure fuel pump
There is a lot of information on fuel sytem issues in the Volvo Penta section of iBoats.

http://forums.iboats.com/showthread.php?t=283269

http://forums.iboats.com/forumdisplay.php?f=444

http://forums.iboats.com/Volvo-Penta/Fuel-Pump
Author:  Technologic80 [ Thu Jul 26, 2012 8:05 am ]
Post subject:  Re: Replacing low pressure fuel pump
Thanks! Ive been hanging out over there for a while.
Author:  LouC [ Thu Jul 26, 2012 10:02 am ]
Post subject:  Re: Replacing low pressure fuel pump
Also there is a long thread at the Seaswirl Owners Club but you have to register to read it.
I don't get why these pumps are so troublesome. I would love to have FI on the boat but honestly I am glad I have a muscle car era Quadra-Jet and mechanical fuel pump. The Q-Jet has been rebuilt 2x in 10 years worth of boating (could be ethanol related) and the pump is original, untouched.
In 23 years of having cars with electric fuel pumps, we replaced one, on an '88 Toyota Camry but it had 115000 miles on it and was about 7 years old. Our 2 older vehicles are both going on 15 years old with a bit more than 140000 miles each, both still have the OE electric pumps.
Author:  Technologic80 [ Thu Jul 26, 2012 11:24 am ]
Post subject:  Re: Replacing low pressure fuel pump
I have a friend who can get a handsome discount at West Marine on the low pressure fuel pump (Sierra brand). $112. So Im going to pick that up and replace it, save the old one as an emergency spare as its still intermittently working.
Author:  LouC [ Thu Jul 26, 2012 12:45 pm ]
Post subject:  Re: Replacing low pressure fuel pump
You know with all the controversy about E-10 fuels (are you using that, we have no choice here in southern NY) there are companies that sell E-10 testing kits so you can find out what's really in the gas you are using. I would get one of these if I was having repeated fuel problems.
Author:  Technologic80 [ Thu Jul 26, 2012 9:27 pm ]
Post subject:  Re: Replacing low pressure fuel pump
Ok my friend works at a very popular boating store that rhymes with Rest Rarine...lol.

I got the low pressure fuel pump for $112 with his employee discount - list price was $212 :shock:

Installed it, started right up. Ill let you know if it solved the problem tomorrow. Its only when I cold start it that I get problems.
Page 1 of 1 All times are UTC - 6 hours [ DST ]
Powered by phpBB® Forum Software © phpBB Group
http://www.phpbb.com/