Long story here so I'll try to shorten it as much as I can. I bought a brand new motor from Michigan Motorz February of this year due to my old one putting a valve through the piston. In march I put my 10 hour break in period on it, and at 13 hours it put another valve through the piston
Sent the motor back to Michigan they analyzed it and concluded the valve failed due to a lean condition (even though plugs showed no sign of this) they discovered the accelerator pump on the carb was only squirting gas into 1 barrel and showed me a video of it. So they fixed the motor and sent it back to me told me to rebuild the carb.
Got the motor back, rebuilt the carb and for the last week I have been putting the 10 hours break in on it. Motor has been okay but I kept having hard start up and a fuel leak from the carb problem. Yesterday I was running at about 2500 rpm twice and the motor started acting like it was starving for fuel, figured something on the carb must be wrong. Pulled the carb apart today, found out I had not adjusted the float correctly,fixed that threw it back in. Went out today and it ran great, leak was gone, easy starts good acceleration except at WOT. When I run at 4000 rpm and then thow the throttle all the way down, it hesitate for a sec and then kicks in.
Then was heading back to the dock and the motor died, figured out now the carb is not getting any gas. Nothing I could do to get it going again so got towed back to the dock. Got the boat home, threw some gas in the carb, fired right up and now it's running fine again, carb is getting gas.
Very frustrated at this point after 2 blown motors, and now the fuel to the carb just stops and have this lag when I hit full throttle. I'm terrified at this point what ever is wrong is going to blow another motor. I though I had an electric fuel pump but I dont see one and when I look at the pump I assume it's mechanical as I see no wires going to it.
Any advice as to where to go from here, I dont know how to test a mechanical fuel pump out and would this be the cause for the WOT lag issue? I dont know if a mechanical pump can just quit and then work again for not. The boat is a 2003 Sea Ray 176 SRX
Sent the motor back to Michigan they analyzed it and concluded the valve failed due to a lean condition (even though plugs showed no sign of this) they discovered the accelerator pump on the carb was only squirting gas into 1 barrel and showed me a video of it. So they fixed the motor and sent it back to me told me to rebuild the carb.
Got the motor back, rebuilt the carb and for the last week I have been putting the 10 hours break in on it. Motor has been okay but I kept having hard start up and a fuel leak from the carb problem. Yesterday I was running at about 2500 rpm twice and the motor started acting like it was starving for fuel, figured something on the carb must be wrong. Pulled the carb apart today, found out I had not adjusted the float correctly,fixed that threw it back in. Went out today and it ran great, leak was gone, easy starts good acceleration except at WOT. When I run at 4000 rpm and then thow the throttle all the way down, it hesitate for a sec and then kicks in.
Then was heading back to the dock and the motor died, figured out now the carb is not getting any gas. Nothing I could do to get it going again so got towed back to the dock. Got the boat home, threw some gas in the carb, fired right up and now it's running fine again, carb is getting gas.
Very frustrated at this point after 2 blown motors, and now the fuel to the carb just stops and have this lag when I hit full throttle. I'm terrified at this point what ever is wrong is going to blow another motor. I though I had an electric fuel pump but I dont see one and when I look at the pump I assume it's mechanical as I see no wires going to it.
Any advice as to where to go from here, I dont know how to test a mechanical fuel pump out and would this be the cause for the WOT lag issue? I dont know if a mechanical pump can just quit and then work again for not. The boat is a 2003 Sea Ray 176 SRX
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