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Rglover
Senior Member Joined: October-21-2008 Location: Canton, GA Status: Offline Points: 111 |
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Posted: November-03-2008 at 3:29pm |
This weekend I winterized for the first time. I have an '86 Martinique that we purchased this summer and it has the PCM 351 and Holley 4 bbl . I haven't used the boat for about a month and when I tried to crank it to warm it up and spray the fogging oil it was extremely hard to crank. I had pumped the throttle alot and never saw gas spray in the carb. I evetually had to hook up the battery charger and pour a little gas in the carb. Once I did that it cranked and ran like a top. Could this mean that I need to rebuild the carb over the winter? Maybe the seals are dry and it's allowing the fuel to drain back down too much? Any other suggestions?
Also, I tightened up the packing nut this weekend too as it was leaking pretty heavy this summer. After tightening I turned the prop and it seems much more firm than it was before. I can still turn it relatively easy but it is firm. I made two rounds on the packing nut when I tightened it. One and a half seemed to be firm but I had to complete the turn to get the tie wire back in. Does this all sound normal or should I have only needed one turn of the nut? Thanks for all of your input! |
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bill1
Senior Member Joined: May-27-2007 Location: United States Status: Offline Points: 151 |
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how old is the battery? when you first started turning it over, did it spin fast or slow?
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bill
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Rglover
Senior Member Joined: October-21-2008 Location: Canton, GA Status: Offline Points: 111 |
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The battery was fresh. I cranked a good while when it started to slow down. That's when I hooked up the battery charger and resorted to the gas in the carb to get it started.
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Brktracer
Senior Member Joined: December-20-2007 Location: South Carolina Status: Offline Points: 387 |
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Sounds like you might be ready for a carb rebuild.
After you got the engine to start, does the carb spray gas or not? Matt |
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Rglover
Senior Member Joined: October-21-2008 Location: Canton, GA Status: Offline Points: 111 |
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Thanks Matt,
Yes, after the engine started it ran like a top as far as idling and revving a little to warm up to operating temperature. Of course there was no way to test it under load, but I have been thinking I may need a carb rebuild since I bought the boat. No major issues, just some hard starting now and then and some missing on acceleration now and then. |
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SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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Rg - Make sure & check your timing before the carb rebuild. I played with different timing settings & resulted in noticeably harder starting.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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Rglover
Senior Member Joined: October-21-2008 Location: Canton, GA Status: Offline Points: 111 |
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I will do that SN. Thanks.
By the way, does anyone have thoughts about the second part of my post regarding the shaft packing nut? |
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Randy_in_Ohio
Platinum Member Joined: September-13-2006 Location: N. Canton, OH. Status: Offline Points: 1891 |
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I don't think you will be able to really tell where the packing nut should be until you put it in the water.
I replaced mine with the Gortex stuff, I took it out after replacing it and the shaft got kind of hot at first so I backed it off a turn or two and it has been fine since. You need to have a few drops a minute to keep it cool. |
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SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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I second Randy's position -- I found that the packing nut adjustment to be rather sensitive, only 1 hex flat difference between running hot & leaking too much. I found the sweet spot & haven't had to touch it all summer.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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Rglover
Senior Member Joined: October-21-2008 Location: Canton, GA Status: Offline Points: 111 |
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Do you not worry about the two positions for the safety wire being lined up?
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BuffaloBFN
Grand Poobah Joined: June-24-2007 Location: Gainesville,GA Status: Offline Points: 6094 |
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The wire isn't really to keep it in a given place; it's to save catastophic failure.
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