can't open it up runs fine at idle or without load
09-03-2007, 10:13 PM
#1
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Join Date: Aug 2007
Location: taylorville, il
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can't open it up runs fine at idle or without load
I just bought a 32 black thunder. it has a 454 I think at least that was what I was told when I bought it. When you try to lay down the throttle on the water it will run for a second or so and then right as it 's going get on plane it starts cutting out. I've tried to ease into it and still does it. I've replaced the carb, electric fuel pump. fuel water seperator, distributor and a bent exhaust value. The carb and dist are car parts though. I changed the stock coil dist to a electronic.
It just seems like I've replaced everything but the problem. I just bought this thing and I'm gettin really frustrated. Any suggestions
It just seems like I've replaced everything but the problem. I just bought this thing and I'm gettin really frustrated. Any suggestions
09-04-2007, 10:15 AM
#3
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Join Date: Mar 2001
Location: Oklahoma City, OK
Posts: 872
Sounds like fuel starvation but with what you have replaced it sounds like it is in the fuel pickup, anti reverse valve or fuel line to the pump. I have had a bad anti-reverse valve at the tank cause exactly your problem. Take a five gallon gas can with a few gallons of fuel in it. Run a new fuel line from it to your fuel pump. If it runs fine you will know where your problem is.
09-04-2007, 12:37 PM
#4
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install a fuel pressure gauge just before the carb and monitor the fuel pressure as you accelerate, you should not see less than about 4psi with 6-7 being ideal.
Be careful, 2 guys got second degree burns this weekend trying to fault find a fuel problem on the water.
btw Have you checked the fuel for water, this is a typical symptom
Be careful, 2 guys got second degree burns this weekend trying to fault find a fuel problem on the water.
btw Have you checked the fuel for water, this is a typical symptom
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Like cars explode all the time they are used....
09-05-2007, 08:29 AM
#8
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Location: Florida
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Originally Posted by wrinkleface
Popcorn & peanuts!!!!!!!
Here are my 2 cents. Do a leakdown and compression check. What caused the bent valve???????
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I can't talk about it right now, it's being handled by the Postal Inspector. Those guys don't mess around!
I can't talk about it right now, it's being handled by the Postal Inspector. Those guys don't mess around!
09-05-2007, 12:56 PM
#10
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Location: Tallahassee, FL
Posts: 1,686
The carb should be replaced, there are no J tubes on non marine carbs... that really could cause a fire in certain situations. The distributor probably doesn't make a difference.
This definitely sounds like lack of fuel. check the pressure first, then figure out where the problem is. you could be getting air in the line at some point.
This definitely sounds like lack of fuel. check the pressure first, then figure out where the problem is. you could be getting air in the line at some point.
