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fluctuaing fuel pressure

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Old 06-04-2007, 04:26 PM
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Default fluctuaing fuel pressure

i have a 36 spectre that i just bought 500 efi's m1 procharged,the motors run smooth great oil pressure,low oil temp.one engine has fluctuating fuel pressure,the other 65psi at wide open throttle,can some help.
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Old 06-04-2007, 08:11 PM
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Originally Posted by boatcrazy1052 View Post
i have a 36 spectre that i just bought 500 efi's m1 procharged,the motors run smooth great oil pressure,low oil temp.one engine has fluctuating fuel pressure,the other 65psi at wide open throttle,can some help.
Can you be more specific? what is the base Idle fuel preassure on both motors...? and what is the WOT fuel preassure on both motors. Boost referencing will make the F/P rise in accordance of boost. Perhaps one of the FMU's is sticking.

Bryan
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Old 06-04-2007, 08:55 PM
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Default fluctuating fuel pressure

both engines at idle 45psi at wide open thtottle 65psi,but starbord motor fluctuates between 20 and 45 after 3000 rpm.can you help bryan.
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Old 06-04-2007, 09:31 PM
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Hey John, I guess you are still having some problems with the one motor.? It looked like you was running pretty good on sunday past new plaza. We can take a look at it to help ya out. What kind of aftermarket pumps do they run on the motors? It does o.k. when cold? I'll try to help in any way!! Talk to ya later,Robby
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Old 06-05-2007, 08:17 AM
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ha rob how it going,the spectre has aeromotive 1000's,it seems to do it hot or cold,man if you could take a look i would be glad to pay you for your time,i really like the boat if i could get that one motor right.give me a call on my cell at (812)457-8435.thanks for your concern john
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Old 06-05-2007, 08:31 AM
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I work at S & S marine, I'll call you as soon as I can.
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