0Likescan't open it up runs fine at idle or without load
09-03-2007, 09:13 PM
#1
Registered
Thread Starter
Join Date: Aug 2007
Location: taylorville, il
My Boat: cove5 1993 Black Thunder
Posts: 1
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
09-03-2007, 11:50 PM
#2
Registered
Join Date: Feb 2006
Location: Wi.
My Boat: 2000 42 Lightning
Posts: 486
Try the ground plug on the engine for the wireharness. Might have a prong broke off on the harness or possiblly loose. Hope that works
09-04-2007, 09:15 AM
#3
Registered
Join Date: Mar 2001
Location: Oklahoma City, OK
My Boat: 35 Motion "Bring It" is "For Sale", 31 Warlock
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, 11:37 AM
#4
SORE MEMBER
Platinum Member
Join Date: Apr 2004
Location: 29°50'49.74"N 95° 5'17.55"W.......TEXAS
My Boat: SeaDoo RXP & RXP-X, Stryker Equalizer 28, Eliminator Daytona Jet
Posts: 6,977
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
09-04-2007, 11:54 PM
#5
Charter Member # 55
Charter Member
Join Date: Oct 2000
Location: Omaha
My Boat: .......32............. ............Active Thunder....
Posts: 16,941
TAKE THE CAR PARTS OFF THE BOAT!!!!!!!!!!!!!!!
If you have a fuel problem, they may cause an explosion.
If you have a fuel problem, they may cause an explosion.
09-05-2007, 12:41 AM
#6
Registered
Join Date: May 2005
Location: Tampa, Florida
My Boat: Scarab 34SS, triple OMC V8's
Posts: 393
Originally Posted by Griff
TAKE THE CAR PARTS OFF THE BOAT!!!!!!!!!!!!!!!
If you have a fuel problem, they may cause an explosion.
If you have a fuel problem, they may cause an explosion.
Like cars explode all the time they are used....
09-05-2007, 06:54 AM
#7
Registered
Join Date: Jan 2003
Location: Michigan
My Boat: NT 477!! Ilmors Baby!!!
Posts: 8,022
Popcorn & peanuts!!!!!!!
09-05-2007, 07:29 AM
#8
VIP Member
VIP Member
Join Date: Dec 2001
Location: Florida
My Boat: Cigarette CC and Boston Whaler currently
Posts: 10,113
Originally Posted by wrinkleface
Popcorn & peanuts!!!!!!!
Here are my 2 cents. Do a leakdown and compression check. What caused the bent valve???????
__________________
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, 09:33 AM
#9
SORE MEMBER
Platinum Member
Join Date: Apr 2004
Location: 29°50'49.74"N 95° 5'17.55"W.......TEXAS
My Boat: SeaDoo RXP & RXP-X, Stryker Equalizer 28, Eliminator Daytona Jet
Posts: 6,977
Originally Posted by Kims
Like cars explode all the time they are used....
09-05-2007, 11:56 AM
#10
Registered
Join Date: Feb 2006
Location: Tallahassee, FL
My Boat: 1987 Donzi 22; 2008 Donzi 28 ZXO
Posts: 1,682
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.
Linear Mode
