Looked in my Merc Racing service manual, but couldn't find any info. coming home last night from Seb. inlet, running 3200 r's, SB engine, kinda sputtered, then died. I started it back up, and my friend said he thought he heard valve train noises coming from the SB engines. Shut it down, limped back to the lift, on port engine, put on the lift, and engine initially kinda ran a little rough, bumped the throttle, and engine runs fine, flushed for 10 minutes, about every 1-2 minutes, getting a 5 beep alarm. Any ideas guys?
Thanks,
Dean

Have you scanned it?
How old is the IAC?

S,
No scanning yet, ICAs are originals, 150 hours on them.

off the top of my head 5 beep alarms the list what I can think of at the moment are

IAC
MAP
Coil pack
Fuel pump
Fuel injector(s)

and if I recall on some engine serial number runs --- high oil temp.

If scan with Diacom and nothing is found, a lot of times or some of the times, the MERC CDS scan can show the fault / problem area.

I would start with IAC and maintain all areas with it properly when changing and see where it goes, I would not continue running for long periods until you fix it 100 % and rescan it.

Smartcraft ? no info ?

^^^^^ Agree but possible does not have it - what year and engine serial number helps as well.

Guys,
Thanks for the info.

575,
No smart craft installed,

BUP,

Year 2006
S/N: OM955231, and 232. All temps and pressures were good the last 3 days of boating, and we have been boating hard too. and I won't be running her until she's fixed. Just had to flush her for 10 minutes....
Thanks,
Dean

Dean so 575 SCi or the 600 Sci I see 575 posted by you above ?

Also there is 2 OEM service manuals for these one is the mechanical side and the other is the Diagnostic side - which one do you have or both ? I do have the part numbers for these but would have to look it up. I can not remember those part #'s.

600sci