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Odd starting issue after hot

Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=36579
Printed Date: October-07-2024 at 8:24pm


Topic: Odd starting issue after hot
Posted By: vondy
Subject: Odd starting issue after hot
Date Posted: June-29-2015 at 12:41pm
Finally got the Mustang out for the first time this year. She ran great. One odd thing that happened, and it's happened in the past, is this strenuous sounding startup after it's sat for a while when hot.

For instance, we cruised around for maybe 20 minutes at about 25-30 mph or so yesterday. Then we anchored for an hour while us and the kids cooled off in the water. Go to start her and it sounds like something's holding her back, she give this hum type of whine and turns over once. I try again and engine doesn't turn. Then one more time and she starts up and the alternator belt squeals for about 5 seconds.

It sounds like there is some kind of resistance going on. This only happens after she's been hot for a while. I even hear the hum when I shut down before this happens. It's really hard to describe the sound, will have to video it next weekend.

After we got back to the dock I shut her down for about 2 minutes and started up with no problems.

Engine runs cool the whole time, no other problems that I know of. Oil is fresh, etc.

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http://correctcraftfan.com/diaries/details.asp?ID=4645&sort=&pagenum=1 - 69 Mustang HM



Replies:
Posted By: 8122pbrainard
Date Posted: June-29-2015 at 7:19pm
David,
Sounds like a low battery or bad cables/connection to me. The alternator belt squeal may have been it putting out a full amp charge. Get some volt readings. Check your timing too.

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54 Atom

/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique

64 X55 Dunphy

Keep it original, Pete
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Posted By: GottaSki
Date Posted: June-29-2015 at 7:40pm
Indeed, the checks that Peter prescribed.
Then timing. Slow cranking speed when hot suggest too much initial advance.

Pull the coil wire off and if it cranks normal, likely too much initial.

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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."

River Rat to Mole


Posted By: vondy
Date Posted: June-29-2015 at 8:06pm
Originally posted by GottaSki GottaSki wrote:

Pull the coil wire off and if it cranks normal, likely too much initial.


That's a good idea. I'll see if I can replicate this weekend.

Battery was charged before we took her out but it is several years old so it's possible. Cables are fine. I did check the timing at idle before taking her out and it was where it should be. Haven't really messed with any of it for a few years now. I'll warm her up this weekend and recheck everything.

Thanks!



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http://correctcraftfan.com/diaries/details.asp?ID=4645&sort=&pagenum=1 - 69 Mustang HM


Posted By: workky
Date Posted: July-01-2015 at 4:58pm
I had an issue similar with my 84 2001 ski nautique. My issue was the exhaust riser gaskets were bad and water would go back in the exhaust causing it not to want to start.


Posted By: vondy
Date Posted: July-01-2015 at 5:48pm
Originally posted by workky workky wrote:

I had an issue similar with my 84 2001 ski nautique. My issue was the exhaust riser gaskets were bad and water would go back in the exhaust causing it not to want to start.


My gaskets are fairly new since I replaced my manifolds a few years ago after burning them up. Figured I'd see some water in the oil if something like that has happened again. Who knows. Will be on the lake tomorrow so we will see.

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http://correctcraftfan.com/diaries/details.asp?ID=4645&sort=&pagenum=1 - 69 Mustang HM



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