496 HO wont go past 4300
#1
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496 HO wont go past 4300
Hello everyone,
I have a 496 HO with aprox 70 hrs on it and i am not being able to go past 4300 rpm. Boat is a cigarette 27 with a 22" bravo 1 prob. Ive tried changing water/fuel separator and spark plugs. No change.
here is the diacom screenshot when running at WOT.
PLEASE HELP!!!
I have a 496 HO with aprox 70 hrs on it and i am not being able to go past 4300 rpm. Boat is a cigarette 27 with a 22" bravo 1 prob. Ive tried changing water/fuel separator and spark plugs. No change.
here is the diacom screenshot when running at WOT.
PLEASE HELP!!!
#3
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yeah, the temp is crazy, probably a mistake of some sort.
#4
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When my I bought my boat the guy said it had been doing the same thing and it was a sensor on top of exhaust manifold on left hand side drove them crazy for a while before they finally found it
#5
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I don't know alot about motors, but is 22 degrees of timing right? sounds low maybe should be near 29? don't know just a thought. could the sea water temp be telling the computor to back down the timing? I'm lost!
#6
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the timing also caught my eye but only because of my experience with distributors which advance to 34 deg or more. not sure with ecm injection engines though.
#8
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No mecanich by any means but the weird thing is that , while watching the data playback I noticed that the spark advance is 26 @ 3400 and then drops as the throtle is opened to 22 @ 4300 aprox. Still, i would think that 22 is low even for 87 octane.
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Hello everyone,
I have a 496 HO with aprox 70 hrs on it and i am not being able to go past 4300 rpm. Boat is a cigarette 27 with a 22" bravo 1 prob. Ive tried changing water/fuel separator and spark plugs. No change.
here is the diacom screenshot when running at WOT.
PLEASE HELP!!!
I have a 496 HO with aprox 70 hrs on it and i am not being able to go past 4300 rpm. Boat is a cigarette 27 with a 22" bravo 1 prob. Ive tried changing water/fuel separator and spark plugs. No change.
here is the diacom screenshot when running at WOT.
PLEASE HELP!!!