Amitchell001
Cadet
- Joined
- Jun 28, 2012
- Messages
- 8
So I am in need of some help. Motor is 87 350 260 with thunderbolt iv and alpha one. in neutral the boat idles fine and can rev up as far as
You want no problem. Under load different story. Here is the history
-Boat dies under more than half throttle. Keep it under half throttle and its fine. Wont turn more than 3000 rpm
-change fuel filter boat is worse. Wont even plane out.
-pulled carb off. Had someone rebuild it last year....... They didn't do anything to it.... At least in convinced because if they did they would have saw the mangled primary metering rod...... Put a new rod in and cleaned carb
-runs now but not over half throttle. Try to go over half throttle now results in sputtering (I believe because its starving for fuel) and no power. It will stall if I don't back off throttle.
-checked cap it had some corrosion inside, changed cap and fuel filter again.
-yake the boat out and is ok full throttle but turning 3200rpm max. Back off the throttle a tiny bit and boat wants to stall. Bump up to full throttle and its fine. Bring throttle back to half just under where it loose power and it fine. Its not sputtering any more either. Take off again and wont go full throttle only half and n
ow only turns 2600 rpm.
-checked anti siphon vale to find its not there someone changed to just a barb fitting. I did look in the carb while it was running and the secondaries open and are getting fuel but thats when the boat loose power.
-checked fuel vent line and is ok
HELP is greatly appreciated!!!!
You want no problem. Under load different story. Here is the history
-Boat dies under more than half throttle. Keep it under half throttle and its fine. Wont turn more than 3000 rpm
-change fuel filter boat is worse. Wont even plane out.
-pulled carb off. Had someone rebuild it last year....... They didn't do anything to it.... At least in convinced because if they did they would have saw the mangled primary metering rod...... Put a new rod in and cleaned carb
-runs now but not over half throttle. Try to go over half throttle now results in sputtering (I believe because its starving for fuel) and no power. It will stall if I don't back off throttle.
-checked cap it had some corrosion inside, changed cap and fuel filter again.
-yake the boat out and is ok full throttle but turning 3200rpm max. Back off the throttle a tiny bit and boat wants to stall. Bump up to full throttle and its fine. Bring throttle back to half just under where it loose power and it fine. Its not sputtering any more either. Take off again and wont go full throttle only half and n
ow only turns 2600 rpm.
-checked anti siphon vale to find its not there someone changed to just a barb fitting. I did look in the carb while it was running and the secondaries open and are getting fuel but thats when the boat loose power.
-checked fuel vent line and is ok
HELP is greatly appreciated!!!!