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Question

I have an 07 mercruiser MPI. At WOT in Neutral or in gear it will oly rev to 3700 rpms. It starts missing and backfiring. I eliminated the fuel issue as i used a secondary source. also I replaced the cap and rotor as they were corroded. Is there any common problems with the ECM?? I was also thinking it may be the TPS. I would appreciate any ideas. Thank you

Submitted: 246 days and 15 hours ago.
Category: Boat
Value: $14
Status: AWAITING CUSTOMER ACTION
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Posted by ROCKET 246 days and 13 hours ago.

Answer

Welcome to JA

TPS is for idle mainly

you really need to plug it into a computer
but the cap and rotor was bad it could be fueling also

245 days and 14 hours ago.

Reply

Actually my mistake I was un aware that it had a rev limiter in neutral. what it is doing is it will go to full rpm for apprx 5-6 seconds and then seems to run out of fuel. It does this on the main tank or on a gerry can. new fuel filter any common probles with the filter housing or fuel pumps on these. the motor has 130 hrs on it. Thank you

Answer

nope

do not rev motor in neutral, unless you want to buy parts

well if cap rotor was corroded, better go through all the sensors and look for corrosion

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Expert: ROCKET
Pos. Feedback: 98.0 %
Accepts: 916
Answered: 7/19/2009

Marine Mechanic

I HAVE BEEN WORKING ON BOATS OVER 25 YEARS

Posted by ROCKET 239 days and 8 hours ago.

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