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 Post subject: Misfire / Fuel delivery problem
PostPosted: Mon May 30, 2011 7:03 am 
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Team Axis

Joined: Wed Apr 27, 2011 1:58 pm
Posts: 659
Location: Smith Mt Lake, VA
Im guessing it is a fuel problem, but would love to hear anyone else experiences/thoughts. In hard corners, like pulling a boarder deep into a cove I get a misfire or 2 on the hard right turns. Gas tank is over 1/2 full. NEVER happens any other time. Just about to go in for the 300 hours service, any suggestions on what I should tell the mechanic to 'fix'?


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 Post subject: Re: Misfire / Fuel delivery problem
PostPosted: Mon May 30, 2011 3:01 pm 
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Team Axis
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Joined: Tue Jun 08, 2010 7:22 pm
Posts: 1321
Location: BoomTown!
Just a little tip, if you (the customer) have to tell a so called mechanic what to fix on your boat, it shouldn't be there, they should be able to take your symptoms and try to simulate the same situation and come up with their own diagnosis, even if they have to take it out on the water, that's part of it, just don't go in there telling them what you think is wrong with it or they may just go throwing parts at it and spending a bunch of money for nothing, on a side note there was another user on here that had a problem with his fuel pump but i think his boat just had very low power output, if you have easy access to water go to the parts store and get you a fuel pressure gauge, usually they are around 50$, hook it up to the service port on the fuel rail, have someone watch the pressure and see if you can make the boat act up, i'm not certain on the actual spec but the pressure should be at least 40 psi, some similar GM systems run on 60 psi, and then there are the returnless systems with FPDM's and a bunch of other stuff but this boat has a fairly simple system on it, you can experience a misfire if the pressure goes below 35 but it will usually feel like low power or a plugged up fuel filter or air filter or something along those lines. If you are feeling a good hard misfire and you can really hear it in the engine it may have something to do with your ignition system, maybe a cracked spark plug or corroded wire terminal, with 300 hours I would start by checking the plugs and wires, fuel filter, and make sure the fuel pressure is ok.


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 Post subject: Re: Misfire / Fuel delivery problem
PostPosted: Thu Jun 02, 2011 6:48 am 
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Team Axis

Joined: Wed Apr 27, 2011 1:58 pm
Posts: 659
Location: Smith Mt Lake, VA
Thanks Walter!! Sage advice...Ill let you know what the fix turns out to be....


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