6.2 MPI problems
 

2002 6.2 MPI - bought the boat about a month ago. ~90 hours on the original motor/drive

Short story:
- seems to have a hard time starting and seems slow to get on plane, like its starving for fuel
- brand new fuel filter and fuel/water separator

Full story:

- First couple times out seemed to run great no problems.
- about the fifth time out had a low battery and wouldn't start it turned over a couple times, backfired a couple times but wouldnt actually start
- replaced the battery that day then took the boat out.
- seemed to have a hard time starting, later that day went to get on plane and wouldn't go over about 2000 RPM
- next morning replaced the original fuel filter and fuel/water separator
- started the boat and realized the serpentine belt wasnt moving
- replaced the original 11 year old impeller
- started the boat, seemed like a bit of a hard start, but OK
- ran the boat again, semi-hard start at the dock and a couple times on the water, not like when I first got the boat
- also seems to plane quite a bit slower than when I first got it, feels like its starving for fuel.

Any thoguhts? Help would be much appreciated!

What is your fuel pressure?
Did you change both filters if its the same as mine.

Tired, we will talk later.

I have been through this with both my engines and each time it was the cap and rotor. If you haven't had these done recently that's a great place to start including wires. It is amazing how crappy a boat will run and have trouble starting with corrosion on the cap.

Update: Pulled cap definitly has corossion. Will replace tomorrow and provide update.

Awesome, hopefully that does the trick for ya!

I should have updated this a long time ago, replaced rotor and cap, did the trick! Never would have expected that on a 2002 MPI engine...

very common problem the HVS caps do not vent at all. Even 2 year old caps are bad in humid weather.

Glad it did the trick!