496 ho alarm before start up ( any suggestions)?
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496 ho alarm before start up ( any suggestions)?
Changed,oil,raw water pump.fuel filter ,gear case oil,added anti freeze,changed plugs,new serp.belt,before ever starting - alarm sound ,2 sec beeps ,constant ,,,,,any how started boat seems to run fine, garden hose hookup,little more water out thru hull exh. On starboard side,didn't let get above 150-160,then I shut it down ,,,any help would be great Ps ,noticed lights on vapor sensor not lit ,tried it hooked up, disconncted no difference ,green light on fire ext system,
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Changed,oil,raw water pump.fuel filter ,gear case oil,added anti freeze,changed plugs,new serp.belt,before ever starting - alarm sound ,2 sec beeps ,constant ,,,,,any how started boat seems to run fine, garden hose hookup,little more water out thru hull exh. On starboard side,didn't let get above 150-160,then I shut it down ,,,any help would be great Ps ,noticed lights on vapor sensor not lit ,tried it hooked up, disconncted no difference ,green light on fire ext system,
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an old boat i had did that after i changed drive oil. Turned up it built pressure or something when i refilled. I cracked the fill cap, it let off pressure, and that took care of it. Just a idea.
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2 beeps every 60 seconds could be IAC valve. I believe low drive oil, water pressure, oil pressure gives you a constant beep. I had to replace the IAC on both my engines at 155hours on port engine and 165 hours on starboard engine. Put it on a scanner, and that will tell you. Do it before replacing anything else.
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I have read recently about a lot of IAC problems with the 496, I have twins in my kachina with about 140 hrs are they just junk equipment or could it be where they are mounted?