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I have a mercruiser 5.0 mai. Mpi. I have had 2 valves psh up
I have had 2 valves psh up into the head on 2 separate occasions the first time was 3 weeks ago on the odd side #5… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
5.0 mpi serial no 1A652134. Audible warning sounds at low
5.0 mpi serial no 1A652134. Audible warning sounds at low rpms and engine goes into limp mode. All gauges look good. My mechanics plugged in diagnostic and shows a number of low water pressure errors.… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
5.0 that runs good until it gets warmed up then starts to
5.0 that runs good until it gets warmed up then starts to miss, cutting out, backfires through the carb. I replace the coil but that didn't help. What would you suggest next? … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
I bought a 2005 Sea Ray 300 Sundancer two years ago with twin
I bought a 2005 Sea Ray 300 Sundancer two years ago with twin Mercruiser 5.0 MPI. It was a hurricane Sandy salvage boat. It had taken in water in engine room. We took out the engines and rebuilt them.… read more
Charles
Charles
Certified Mercury Tech
5,471 satisfied customers
I have a 2010 mercruiser fuel injected 4.3 liter (200 hrs).
I have a 2010 mercruiser fuel injected 4.3 liter (200 hrs). Today, I noticed unburned fuel pumping out the exhaust. Enough to smell and make a small sheen while at idle. The engine runs perfect - not … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
I have a 2000 Sea Ray 340 with 7.4L Mercruisers fuel injected.
I have a 2000 Sea Ray 340 with 7.4L Mercruisers fuel injected. I have a problem when I first start the engines cold. The engines will fire up but then they shut down and not able to idle until the eng… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
i want to replace my mercruiser engines on my sunseeker 29
i want to replace my mercruiser engines on my sunseeker 29 Mohawk 1989 model which engines would you recommend i have presently 20 year old 5.7 mercruiser alfa… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
18,955 satisfied customers
I own a 2008 SeaRay 290 Amberjack with twin Mercruiser 350
I own a 2008 SeaRay 290 Amberjack with twin Mercruiser 350 MAG MPI engines. Full Tune Up each year in Spring (New Jersey) with plugs, cap, rotor. Approx 230 hrs. Fuel burn is approximately 20% higher … read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
Hi there I have a 5,0 Mercruiser MPI with a alpha one drive
Hi there I have a 5,0 Mercruiser MPI with a alpha one drive with seawaterpump in it. I would like to modify the seawater system and install an engine mounted drivebelt driven seawaterpump. Can I use t… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
18,955 satisfied customers
I have a Bayliner 275 fitted with a 350 Mercruiser sterndrive.
I have a Bayliner 275 fitted with a 350 Mercruiser sterndrive. It is leaving a black carbon trail on the water. More like carbon than oil. I have been told this is unburnt fuel . Can you advise please… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
18,955 satisfied customers
i have a 2004 6.2 mercruiser mpi i have rebuilt the engine
i have a 2004 6.2 mercruiser mpi i have rebuilt the engine over the winter because i took on water one of my flaps were gone in the risers anyway all bact together running starts fine idles but will n… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
what is the model number to order a oil filter and air filter
what is the model number to order a oil filter and air filter on a Volvo 5.0 GXi Mpi motor?… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
18,955 satisfied customers
I have a 2003 Mercruiser Mag 350 serial OM587340. Engine idles
I have a 2003 Mercruiser Mag 350 serial OM587340. Engine idles fine and runs well at 3000-3500 rpm for 5-10 min. Engine then bogs/hiccups and will not maintain rpms. Changed fuel/water separator and f… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 2001 8.1L volvo in a Crownline boat. The engine has
I have a 2001 8.1L volvo in a Crownline boat. The engine has started bogging down (like it's not getting enough air). Sometimes it happens at 1000 rpm and sometimes at 2000 or 2400 rpm. If I shut the … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
I have a 1999 Mercruiser 5.0L EFI after about an hour of operation,
I have a 1999 Mercruiser 5.0L EFI after about an hour of operation, it backfires at RPMs above 3000. A Mercury dealer has replaced the distributor sensor and the ECM. Although it seemed to run better … read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
I seem to have carbon buildup on my cylinders according to
I seem to have carbon buildup on my cylinders according to my mechanic. I ran the boat for about 8-9 hours over two weekends and 6 of the 8 plugs were fouled. He put a new coil in and cleaned the plug… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
I have a 2006 Mercruiser 5.0 w/ Bravo III. The engine stalls
I have a 2006 Mercruiser 5.0 w/ Bravo III. The engine stalls at idle after being run 30 minutes or so. The engine will not start again until it has apparently cooled down. I have hade the entire fuel … read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
Boat 2002 Crownline Engine 5.0 L MPI 305 CID Serial #
Boat: 2002 Crownline Engine: 5.0 L MPI 305 CID Serial #: 0M372591 Hours: 149 Recent Maintenance: New Plugs, Distributor Cap & Rotor, replaced fuel filter, inspected and cleaned spark arrestor, vacuum … read more
ROCKET
ROCKET
MASTER CERTIFIED TECH
Vocational, Technical or Trade Scho
426 satisfied customers
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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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