Hard warm engine start
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=43275
Printed Date: October-06-2024 at 12:18pm
Topic: Hard warm engine start
Posted By: GHTILL
Subject: Hard warm engine start
Date Posted: July-29-2018 at 3:53pm
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I have a 1993 196 which I am in the process of restoration. (Hole in the water in which all your time and money go). 351 engine with much over 298 hours (meter wasn't working when i bought the boat). Previous owner had rebuilt the carburetor, replaced the fuel lines, new starter, and a few other small repairs. The engine starts easily when cold with little or no prompting from me. Once the engine gets to temp, and you shut it down, it's a chore to start again. I need to give it lots of gas in neutral to get it started, and then runs rough until it gets back up to speed. I am wondering if my fuel pump is starting to fail, Any advice for my tired old boat would be helpful. ------------- TWSS |
Replies:
Posted By: 8122pbrainard
Date Posted: July-29-2018 at 4:09pm
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Greg, I'd say there's a good chance the engine is flooding especially since you mentioned you need to give it lots of gas to restart. I'm assuming you are opening up the throttle which allows more air to the engine overcoming the extra fuel. Next time, shut down the engine and look down the throat of the carb and see if you can see any fuel dripping. How long ago did the PO rebuild the carb? If recent and you do see dripping, I'd have to say the PO didn't do the best with the rebuild. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: GHTILL
Date Posted: July-29-2018 at 4:23pm
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Thanks for the help. next time we are out I'll check for dripping. The PO mentioned that a race car mechanic did the rebuild two seasons ago. I'm tempted to just bolt a new holly on top of the old gal and be done. Seems i fix one thing and another issue just pops up. She's definitely kept me busy. ------------- TWSS |
Posted By: GHTILL
Date Posted: July-31-2018 at 10:37am
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Could you recommend a good shop that rebuilds Holly carbs. I would attempt this but I've heard this is an "art form". Should I just go with a brand new one, since mine is an original, 25 year old Holly? Thanks, Gregg ------------- TWSS |
Posted By: spiralhelix
Date Posted: July-31-2018 at 11:19am
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There is a guy on the Mastercraft FB page that is the "Carb Guy". Been rebuilding carbs for over 30 years. Uses an ultrasonic cleaner. Quick turn around time too. I will PM his personal information to you. He did my carb a few years back and did a fantastic job. ------------- -Spiral '89 Sport Nautique |
Posted By: KENO
Date Posted: July-31-2018 at 12:00pm
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One thing to keep in mind is that you could put a new or rebuilt carburetor on the engine and have the same problem if you have junk in the fuel system that makes it's way right to the new carburetor. What do you have for filters between the tank and the carburetor? I look for Pete's drips after a hot shutdown, you might see them right away but watch for a few minutes. I'd do some reading here on CCF and find a Holley manual for some more reading and you might decide to tackle a clean/rebuild yourself. You'd need the right rebuild kit that might come to 40 bucks or so.plus a new gasket to go between the spacer plate and the intake manifold. It's not exactly an art form Kinda like getting that fish sandwich at McDonald's or learning how to fish 
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Posted By: GHTILL
Date Posted: August-04-2018 at 11:11am
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OK, tested Pete's dripping issue this morning. (Sorry for the analogy here) but the carb isn't dripping but the vac line from the fuel pump is pouring gas into the top of the carb. I'm assuming this means a new fuel pump? Gregg ------------- TWSS |
Posted By: 8122pbrainard
Date Posted: August-04-2018 at 11:16am
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Gregg, It's not a vacuum line It's there as a visual indicator of when the fuel pump diaphragm is ruptured. Yes, a new pump is needed. Sounds like there's your flooding problem. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: gun-driver
Date Posted: August-04-2018 at 1:11pm
| https://www.summitracing.com/parts/crt-m60389" rel="nofollow - https://www.summitracing.com/parts/crt-m60389 |
Posted By: GHTILL
Date Posted: August-04-2018 at 1:45pm
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Would have been easier to diagnose if the line hadn't turned a nice opaque amber due to its age. Thanks again for the advice. Gregg ------------- TWSS |
Posted By: GHTILL
Date Posted: August-04-2018 at 1:51pm
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BTW, I too refinished an old plywood boat when I was in high school. 1967 Century Ski Dart. Had a 302 Ford interceptor engine. Bought it for 500$ with a tandem trailer. At the time it didn't run/ or float. Many many hours went into that old boat. Sold it so I could buy a car in college. I don't miss the wooden hull. ------------- TWSS |