Re: Boat doesn't plane
I suspect you still have a fuel supply problem, the engine is pulling up to the fuel flow, then the carbs start to run low and the motor begins to bog and die from lack of fuel. You pull the throttle back so that demand is less than supply and the motor stabilizes again.
For a test, replace the fuel hose AFTER the fuel pump and before the carbs with a clear vynal hose, run the motor and watch that clear hose to see if any air bubbles are passing thru. This can prove air is sucking into the fuel system somewhere before the fuel pump.
Find that leak and cure it, a loose fitting, cracked dip tube in the fuel tank, bad O-ring in a quick disconnect fuel fitting, these are common faults.
REMEMBER to remove the clear hose once finished with your repairs, clear hose is NOT RATED FOR FUEL and should not be left on the boat.
Did you test spark to see if it can jump across a 7/16 inch gap with a hot blue arc?
If the spark is orange or yellow then either the wires are getting bad or the coil is getting weak. Either will limit power and the motor cannot accelerate the boat.
Test these things before thinking about spending money on another prop.
I suspect you still have a fuel supply problem, the engine is pulling up to the fuel flow, then the carbs start to run low and the motor begins to bog and die from lack of fuel. You pull the throttle back so that demand is less than supply and the motor stabilizes again.
For a test, replace the fuel hose AFTER the fuel pump and before the carbs with a clear vynal hose, run the motor and watch that clear hose to see if any air bubbles are passing thru. This can prove air is sucking into the fuel system somewhere before the fuel pump.
Find that leak and cure it, a loose fitting, cracked dip tube in the fuel tank, bad O-ring in a quick disconnect fuel fitting, these are common faults.
REMEMBER to remove the clear hose once finished with your repairs, clear hose is NOT RATED FOR FUEL and should not be left on the boat.
Did you test spark to see if it can jump across a 7/16 inch gap with a hot blue arc?
If the spark is orange or yellow then either the wires are getting bad or the coil is getting weak. Either will limit power and the motor cannot accelerate the boat.
Test these things before thinking about spending money on another prop.
. I bypassed everything and hooked the day tank to primer bulb straight to the fuel pump and still had lots of bubbles coming out of the pump. Switched tanks and fittings and no change. I sprayed some carb cleaner around the fuel pump and RPM dropped. Took fuel pump apart and didn't see any cracks in the casing or anything so put it back together and tightened it a little tighter and it's still sucking air. Took it off again and apparantly tightened it a little too tight and started to tear the diaphragm by where the screws go into it. Not sure why or what happened to it since I rebuilt it a month or so ago. Seloc manual says to tighten it to 85 inch lbs and that's what I tightened it to. I'll be going to get another FP rebuild kit in the morning and hope this takes care of it! Any ideas why it may not have sealed? I cleaned everything/scraped with a razor blade so it should have had a good surface to seal against.
