1978 skinautique
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=41071
Printed Date: October-05-2024 at 6:53pm
Topic: 1978 skinautique
Posted By: davd hyde
Subject: 1978 skinautique
Date Posted: May-15-2017 at 10:36am
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Having issues with holley carb. Boat starts cold, runs strong until 3000 rpm, and then cuts out like it has bad gas. Hard to start after warm, appears to flood easy. Is this adjustment, or does carb need rebuild. I have drained tank and have fresh gas. thoughts
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Replies:
Posted By: KENO
Date Posted: May-16-2017 at 2:51pm
Boy, first post and you've been ignored for over 24 hours.
You have quite a few choices as to why the boat runs good up to 3000 rpm and then quits
If it quits because it's starving for gas it could be your fuel pump, it could be whatever you have for fuel filters being restricted enough to let it run up to that speed and then not allow enough flow.
There's also an anti siphon valve on top of your gas tank that could be plugging up enough to restrict fuel flow.
You also might have a fuel inlet screen right where the fuel enters the carburetor but in the last 39 years who knows if it's been removed or is still there.
An easy thing to do to narrow down the problem is to hook a temporary gas supply to the fuel pump inlet and run the boat.
If the problem is gone then your culprit is the suction line upstream of the anti siphon valve being restricted (usually by junk from the tank), the valve itself, a restricted suction line between the tank and pump or a restricted filter in the line if you have one.
If you still have the problem with the temporary hookup, then you can narrow it down to the fuel pump or carburetor having issues
If it floods easy, it's probably time for a good cleaning/rebuild.
Then again you could have ignition issues making it cut out at about 3000 rpm, but I'd do the temporary tank setup with a gas can and a short length of hose before doing anything else and see what your results are.
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