6.2's what about them

Old 04-15-2012, 10:33 PM
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Apparently it was just the gasket, they told me they'd let me know if the riser was bad.

Also supposedly they are new risers. But I am not sure I believe that (just got boat). They don't look new and I would have thought they would have put new gaskets on.

Last edited by Captain YARRR; 04-15-2012 at 10:54 PM.
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Old 04-16-2012, 04:52 AM
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Originally Posted by Dave M View Post
Idle Air Controller, I think all the FI merc engines have them.
You can buy IAC at most Autoparts stores. Change them as soon as you get a beep because the driver in the PCM can burn out as well and its alot more $$$$. Usually smells like burnt plastic in the bilge. 496s burn IACs as well and other misc sensors

Last edited by flying J; 04-16-2012 at 04:55 AM.
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Old 04-16-2012, 12:47 PM
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Originally Posted by 88242LS View Post
What the hell is a IAC?? boats been in freshwater since new, originally lake mead now in WI
This is what the IAC off my 6.2 looks like. I happen to have one in my office that took a crap and just snapped a couple iPhone pics for you. Been meaning to cut it apart in attempt to figure out what went wrong. Have replaced the IAC on each engine and now keep a spare in the glove box. The replacements have been running fine so far, so not sure if it was just a bad batch or if it is an application issue.
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