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i'm having a little bit of hard starting issue with a '99 SAN with GT-40 engine. the boat fires up instantly when cold, just like it always has. this summer i've had some hard starting (cranking 4-5 seconds) after the boat has been sitting 10+ minutes. if i shut it down and immediately restart like with in a minute, it does so just fine.
i've changed the FCC filter and hose and did a full tune-up this spring (cap & rotor, plugs, wires). i also replaced both relays. i'm going to pull the anti-siphon valve tonight and clean it. could this be sticking open, draining the fcc causing it to turn over that long? it would seem to me there would still be fuel in between the fcc and injectors to be able to start on? plus doesn't make sense that it starts perfectly when cold. i also was thinking maybe bad coil when hot? that also doesn't add up that it would start immediately after shutting down just fine.
i'll go buy a fuel pressure gauge and make sure it's making enough pressure. i read in the GT-40 manual the pressure at the rail should be 31 lbs. +/- 3 lbs. do i need to initially crank the motor to build this pressure from cold or should the rail always stay pressurized?
if it is not pressurized, how long should it hold that pressure? If it does not hold, it could only be leaky injectors or bad fuel pressure regulator right? there may be a faint smell of gas in the oil, but not 100%.
i've changed the FCC filter and hose and did a full tune-up this spring (cap & rotor, plugs, wires). i also replaced both relays. i'm going to pull the anti-siphon valve tonight and clean it. could this be sticking open, draining the fcc causing it to turn over that long? it would seem to me there would still be fuel in between the fcc and injectors to be able to start on? plus doesn't make sense that it starts perfectly when cold. i also was thinking maybe bad coil when hot? that also doesn't add up that it would start immediately after shutting down just fine.
i'll go buy a fuel pressure gauge and make sure it's making enough pressure. i read in the GT-40 manual the pressure at the rail should be 31 lbs. +/- 3 lbs. do i need to initially crank the motor to build this pressure from cold or should the rail always stay pressurized?
if it is not pressurized, how long should it hold that pressure? If it does not hold, it could only be leaky injectors or bad fuel pressure regulator right? there may be a faint smell of gas in the oil, but not 100%.
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