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Can you tell me where the IAC valve is on a 2007 Mercruiser?
Can you tell me where the IAC valve is on a 2007 Mercruiser? Having problems at idle speed. Need to check/clean and replace if necessary… read more
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My Mercruiser 5.0 MPI just started making a loud hissing
My Mercruiser 5.0 MPI just started making a loud hissing noise. Seems to run fine, other than the loud hissing. I changed the IAC, but no change. Took it for a short run, and it ran great, but when I … read more
Boat Doc
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I HAVE A HOUSEBOAT, SUMERSET 2006, WITH 2 MERCRUISER 5.0
I HAVE A HOUSEBOAT, SUMERSET 2006, WITH 2 MERCRUISER 5.0 MPI, 265 HORSEPOWER ENGINES. THE STARBOARD ENGINE HAS RUN GREAT UNTIL ABOUT A WEEK AGO, AND I CAN'T KEEP IT RUNNING. WHEN I START IT YOU CAN KE… read more
Tan
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I have a mercruiser 5.0 with bravo 3 on a 2006 Chaparrel
I have a mercruiser 5.0 with bravo 3 on a 2006 Chaparrel Deck Boat. I can only start the boat when the throttle is engaged about 1/4 of the way. When I first got the boat it was turn key, but now I ha… read more
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I own a 2005 Sea Ray Sundeck 240 with a 5.0 Merc. I have a
I own a 2005 Sea Ray Sundeck 240 with a 5.0 Merc. I have a low rpm vibration and the stalls at under 950 rpm. Props look fine. Need some direction as to what to do to determine problem.… read more
Jason
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I have a 2005 Mercruiser 5.0 MPI. I was out yesterday for a
I have a 2005 Mercruiser 5.0 MPI. I was out yesterday for a cruise for an hour or so on plane. When I brought the throttle back to idle the engine stalled. I could only get it to run by advancing the … read more
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I have a 1997 twin 454mfi boat one runs fine the other starts
I have a 1997 twin 454mfi boat one runs fine the other starts fine does the high idle thing then dies right out if I unplug map sensor it will idle but its about 950 to 1100 surge I replaced no change… read more
Jason
Jason
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Hello, We have a MerCruiser 5.0 MPI 2004 4M9XM05.0GME that
Hello, We have a MerCruiser 5.0 MPI 2004 4M9XM05.0GME that ran fine this morning until we trolled at idle for 20 minutes. It stalled. Now it is difficult to start and won't run at idle. Need to shift … read more
Tan
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I am in market for used bowrider in $ 25000 range what is
I am in market for used bowrider in $ 25000 range what is the difference in value , reliability and performance etc of the Mercruiser 5.0 TKS 220 HP vs 5.0 MPI 260 HP should I only pursue the later ? … read more
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I have a 2005 merc, mag 350 mpi with bravo one outdrive. The
I have a 2005 merc, mag 350 mpi with bravo one outdrive. The engine will not start with the throttle all the way down, I have to move it up a little bit (seperate levers, one for throttle one for gear… read more
orcamarine
orcamarine
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Hi got a little start problem 2002 5.0 mpi wont start What
Hi got a little start problem 2002 5.0 mpi won't start What I have done so far: new gas super unleaded changed fuel filter, water seperator and LOW pressure pump because it busted, bleeded the fuel li… read more
orcamarine
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Vocational, Technical or Trade Scho
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I have two Crusader inboard 2001 MPI HO 5.7L V8s. The port
I have two Crusader inboard 2001 MPI HO 5.7L V8's. The port engine is having problems and keeps stalling. After multiple attempts, I have to run it at a higher rpm to keep it from stalling out. When I… read more
Tan
Tan
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Certified Marine Technician
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I have a 2003 mercruiser 5.0 mpi- gas is getting into the oil
I have a 2003 mercruiser 5.0 mpi- gas is getting into the oil somehow. When i changed the oil, I had 7 qts and it was thin and smelled like gas.… read more
Jeremy R.
Jeremy R.
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I have a 2000 5.0 mercruiser stern drive with fuel injection.
I have a 2000 5.0 mercruiser stern drive with fuel injection. I just got it in the water after winterization. The idle speed seems to high. It causes a very loud clunk when going in and out of gear, a… read more
Tan
Tan
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Certified Marine Technician
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I have an 07 mercruiser MPI. At WOT in Neutral or in gear it
I have an 07 mercruiser MPI. At WOT in Neutral or in gear it will oly rev to 3700 rpms. It starts missing and backfiring. I eliminated the fuel issue as i used a secondary source. also I replaced the … read more
ROCKET
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I have a 2002 Mercruiser Mag 350 MPI with a Bravo III drive. I
I have a 2002 Mercruiser Mag 350 MPI with a Bravo III drive. I boat sounded 2 beeps and the engine died (at wake speed) I though it was out of gas (guage scetchy) so in goes 30 gallons. Boat will star… read more
ROCKET
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good morning. I have a mercruiser 5.0 mpi 2007 and it runs
good morning. I have a mercruiser 5.0 mpi 2007 and it runs great from idle to about 30mph. When I go full throttle I reach a speed of about 48mph and then the engine begins to hesitate and then I loos… read more
Captain Dave
Captain Dave
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Master's Degree
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I have a Brand New Pair of 4.3 Mercs I/O, which will not ...
I have a Brand New Pair of 4.3 Mercs I/O, which will not idle, have good fuel, have no code on digasnostic, run fine over 1400 RPM.… read more
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Jason

Jason

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Tan

Tan

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Jeff G.

Jeff G.

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Noel Schembri

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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