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Old 07-11-2016, 09:38 PM   #1
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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?
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Old 07-11-2016, 10:06 PM   #2
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check for spark.
if it has spark, try spraying a little fuel in the intake.
chase the appropriate issue from there.
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Old 07-11-2016, 11:13 PM   #3
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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.
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Old 07-11-2016, 11:44 PM   #4
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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.
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Old 07-12-2016, 12:01 AM   #5
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Yes the fuel pump runs for about 3-5 seconds then stops.
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Old 07-12-2016, 04:58 PM   #6
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Is the kill switch set to RUN?
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Old 07-27-2016, 07:24 PM   #7
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Quote:
Originally Posted by CaptNCamille View Post
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.

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Old 07-31-2016, 01:34 AM   #8
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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
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