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Disabling the fuel pump relay on an 1989 351? |
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Morfoot 
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Joined: February-06-2004 Location: South Lanier Status: Offline Points: 5320 |
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 Topic: Disabling the fuel pump relay on an 1989 351?Posted: June-05-2013 at 9:32pm |
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Jeff N, no worries. the 89's are carburated engines so you don't have to worry about disconnecting an electric fuel pump because there isn't one, it's mechanical.
Pete, we get to flex you so seldom (unless we are talking about tubing) that we are going to take full avantage of it when we can! |
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"Morfoot; He can ski. He can wakeboard.He can cook chicken.He can create his own self-named beverage, & can also apparently fly. A man of many talents."72 Mustang "Kermit",88 SN Miss Scarlett, 99 SN "Sherman"
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: June-03-2013 at 8:36pm |
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Dammit Tim, I didn't look at the year!  I knew someone would get on my tail as soon as I saw the others chime in on asking if the boat had been repowered with a EFI.
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backfoot100
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Joined: January-03-2007 Location: United States Status: Offline Points: 1897 |
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Posted: June-03-2013 at 12:37pm |
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You should do a compression test with the engine warm to start with. Pull all the plugs, open the throttle wide open and make sure each cylinder cranks several times to get a good reading.
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When people run down to the lake to see what's making that noise, you've succeeded.
Eddie |
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Jeff N
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Joined: May-22-2013 Location: Northern WI Status: Offline Points: 49 |
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Posted: June-03-2013 at 12:32pm |
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Thanks SN.
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Jeff N
05 - 206 89 - 2001 |
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SNobsessed
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Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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Posted: June-03-2013 at 12:26pm |
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It won't spray gas. The open cylinders won't draw much mixture with the plugs out, since it is easier to draw air from the plug hole than the intake valve. You're good to go.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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Jeff N
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Joined: May-22-2013 Location: Northern WI Status: Offline Points: 49 |
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Posted: June-03-2013 at 12:20pm |
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Guys,
Based on your responses, it appears I may have asked a "rookie" type question (still learning and appreciate your patience). The motor is the original 351 from 1989. That said, I was told the best way to compression test is to remove all of the spark plugs to begin with. If all of the plugs are out, won't I end up spraying gas around the inside of the boat when I test each cylinder? If so, how do I disable the fuel system to prevent this from happening? Thanks, Jeff N |
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Jeff N
05 - 206 89 - 2001 |
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Morfoot
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Joined: February-06-2004 Location: South Lanier Status: Offline Points: 5320 |
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Posted: June-03-2013 at 11:33am |
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X4 .....
Pete, Where's the electric fuel pump on a 89?  
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"Morfoot; He can ski. He can wakeboard.He can cook chicken.He can create his own self-named beverage, & can also apparently fly. A man of many talents."72 Mustang "Kermit",88 SN Miss Scarlett, 99 SN "Sherman"
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backfoot100
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Joined: January-03-2007 Location: United States Status: Offline Points: 1897 |
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Posted: June-03-2013 at 11:15am |
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X3. Not saying it's not impossible, but highly improbable. |
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When people run down to the lake to see what's making that noise, you've succeeded.
Eddie |
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gun-driver
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Joined: July-18-2008 Location: Pittsburgh, Pa Status: Offline Points: 4127 |
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Posted: June-03-2013 at 12:47am |
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X2 |
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SNobsessed
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Posted: June-02-2013 at 11:45pm |
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When I tested compression, I didn't worry about the gas mixture entering the compression gauge. I did unhook the coil though.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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lewy2001
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Joined: March-19-2008 Location: NSW Australia Status: Offline Points: 2234 |
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Posted: June-02-2013 at 9:43pm |
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89 with a fuel pump relay??
Have you fitted a different engine or fuel injection?? |
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If you're going through hell, keep going
89 Ski <a href="http://www.correctcraftfan.com/diaries/details.asp?ID=5685" ta |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: June-02-2013 at 9:27pm |
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Jeff,
The relay plugs into it's wiring plug. It should have retaining clips on the sides. Depress the clips and pull the plug. |
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Jeff N
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Joined: May-22-2013 Location: Northern WI Status: Offline Points: 49 |
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Posted: June-02-2013 at 8:17pm |
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I am planning to do a compression test on my 89 2001 (351 engine) and I understand that I need to pull the fuel pump relay in order to disable the fuel system. Can someone tell me exactly how to do that?
Thanks, Jeff N |
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Jeff N
05 - 206 89 - 2001 |
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Morfoot wrote: