Question about Boating
Pressur drop in fuel over 3000 rpm
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Posted on Jan 02, 2017
The throttle position sensor may be misaligned. This tells the computer how much throttle is being applied, and when they go bad, or come out of alignment, the idle tends to get up there. If that's not the issue, remove your air cleaner, the housing and everything until you get to the MAP sensor. Give it a good spray with carb cleaner, let it dry and replace the air cleaner with a new one. If the MAP sensor detects minimal air flow, the computer jacks up the idle to compensate.
Posted on Nov 07, 2008
SOURCE: toyota 4 runner fuel pressure
pressuer should actually raise under throttle, but not much. maybe 5psi. 38-44psi is the correct range. if your dropping much I would replace the fuel filter. next I would check the tank for debris or water, finally i would replace the Fuel pressure regulator.
Posted on Jan 10, 2009
Sounds like and injector problem to me. If it was a 2 stroke I'd tell you to pull the carbs and clean them ,but EFI is a whole different story. Most certaintly a fuel problem, most likely injector related, you'll most likely need to go see a marine mechanic with the proper equipment to analyze, rather than start replacing parts you may not need.
Posted on Jun 23, 2009
I would check your fuel lines from the tank all the way to the fuel pump. It seems that you might have a pinched line somewhere. You can also bleed the fuel rail with the schrader valve on the end of the rail. If that wont fix it then you probably have a weak fuel pump.
Posted on Aug 09, 2009
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