No Start

[CaptNCamille]

Mercruiser 5.0 MPI, Bravo 3. I know this is a broad question, but the engine won't start. Not a battery problem, it turns over with no problem. Just won't start. Sounds like it's starving for fuel. I am thinking fuel filter? What do you guys think?

[Corfab]

check for spark.
if it has spark, try spraying a little fuel in the intake.
chase the appropriate issue from there.

[ss3964spd]

CnC, when you turn the key to the Run position, before turning it to the Start position, do you hear the fuel pump run? The FP should run for a few seconds then stop.

[mmwjr]

What the others said, you need to isolate it as either a fuel or spark issue and go from there.

Being MPI the engine can be scanned for fault codes.

[CaptNCamille]

Yes the fuel pump runs for about 3-5 seconds then stops.

[Phillbo]

Is the kill switch set to RUN?

[ss3964spd]

Originally Posted by CaptNCamille

Yes the fuel pump runs for about 3-5 seconds then stops.

When the IAC on my 5.7 MPI failed the engine would not start with the throttle lever in neutral. If I advanced the throttle (without the drive in gear) I could get it to start, but it wouldn't idle.

I had gas, I had spark, but with the throttle in neutral I had no air.

Dan

[JoDo]

does it have a safety switch with a lanyard attached? I had issues with mine being a bit sticky so that would cause no spark