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4.3 mercruiser has very loud banging noise from engine area,
4.3 mercruiser has very loud banging noise from engine area, it goes away at 1000 RPM and above. I driving back to dock at 3800 r with no banging. it shifts fine too and oil pressure was at 40 or so w… read more
Ted G.
Ted G.
Rigger, Diagnostician
Vocational, Technical or Trade Scho
3,161 satisfied customers
Gone thru entire engine. it is a mercruiser 6.2 and it runs
gone thru entire engine. it is a mercruiser 6.2 and it runs smooth as can be until it hits 1800 rpm and then sputters. and I have to back it down. fuel was first guess but doesn't seem to be the issue… read more
DAVID BALLARD
DAVID BALLARD
OWNER
Vocational, Technical or Trade School
10 satisfied customers
I have a 2010 Mercury 90HP EFI It is acting like its starved
I have a 2010 Mercury 90HP EFI It is acting like its starved for fuel. Will beep like normal then start fine, will fun at dock no real issues, if you rev the engine in nuetral it will cut out at 2400i… read more
Charles
Charles
Certified Mercury Tech
5,752 satisfied customers
I have a 1987 Sea Ray 300 Sedan Bridget with Twin 260
I have a 1987 Sea Ray 300 Sedan Bridget with Twin 260 Mercruiser Engines and I have two issues: … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I am Tarek I have a problem with the timing advance on
Hi, I am Tarek I have a problem with the timing advance on a 5.0L MPI 2006 engine. … read more
Jason
Jason
Marine Mechanic
23,324 satisfied customers
At full throttle boat will only make 3500 rpm. Engine sounds
At full throttle boat will only make 3500 rpm. Engine sounds fine. Put it full throttle in neutral same thing. Took her out one week ago no problem. Engine is mercruiser I/O 5.0 260 hp… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
My question is similar to the 2 beeps alarm but the timing
My question is similar to the 2 beeps alarm but the timing of the alarm seems to every 30 to 40 seconds.on my starboard motor I can start the motor by depressing the shifter button and running up the … read more
Jason
Jason
Marine Mechanic
23,324 satisfied customers
I have a 1986 44 Gibson houseboat powered by twin 454 mercruisers
I have a 1986 44' Gibson houseboat powered by twin 454 mercruisers with bravo II drives. I think it weighs around 19000lbs. I am considering doing the Great Loop and am worried about the reliability o… read more
Jason
Jason
Marine Mechanic
23,324 satisfied customers
I have a 1999 Donzi Z23 with a 350 Mag 6.2L engine. It starts
I have a 1999 Donzi Z23 with a 350 Mag 6.2L engine. It starts and runs fine at idle and at high rev in nuetral. Stalls underway at about 1800 RPM. If I back off it will remain running but if I dont it… read more
Jason
Jason
Marine Mechanic
23,324 satisfied customers
I have a 2002 Mercury 40hp that will not idle smoothly. it
I have a 2002 Mercury 40hp that will not idle smoothly. it pops, sputters, and cuts out. It runs great once I put the power to it. I just spent $300. for my local mercury dealer to rebuild the carb, r… read more
Jason
Jason
Marine Mechanic
23,324 satisfied customers
I have a 1991 Evinrude 40 hp. It has been switched over to
I have a 1991 Evinrude 40 hp. It has been switched over to premix from the injection system. It idles great when warmed up. Runs exceptionally between 1500 and 5000. Does not skip a beat. The problem … read more
Jason
Jason
Marine Mechanic
23,324 satisfied customers
I have a 1986 formula 242ls with a new mercruiser 275hp. from
I have a 1986 formula 242ls with a new mercruiser 275hp. from first mate . alpha with a 15 x 16degree prop. the boat will not go aver 3000 rpm. i have thunderbolt iv and it is working properly engine … read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
I have a 2008 Rinker EC 260 cruiser with a mercruiser 350 /
I have a 2008 Rinker EC 260 cruiser with a mercruiser 350 / 300 horse engine and bravo 3 with just under 200 hours. I am having a serious problem with the engine perfomance that my dealer (Basas Marin… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
2002 bennington 2575 RLIO w/5.0 IO Alpha I Drive--did Mercruiser
2002 bennington 2575 RLIO w/5.0 IO Alpha I Drive--did Mercruiser provide a wire to install an hour meter in the harness. I was hoping they had a method of running the meter only while engine running--… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 2003 5.0 260HP EFI mercruiser...... I get an audible
I have a 2003 5.0 260HP EFI mercruiser...... I get an audible alarm -2 beeps - at startup and every 60 seconds..... Leg oil, temperature and oil levels are fine. As well, the engine won't idle at low … read more
Dominick
Dominick
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Vocational, Technical or Trade Scho
1,009 satisfied customers
I have a 2003 200 select with a 5.0L Mercruiser Bravo 3 engine.
I have a 2003 200 select with a 5.0L Mercruiser Bravo 3 engine. Just replaced the Thermostat last season and the impeller this summer. Since then, the gauge still says that I am running to hot. I have… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a mercruiser 5.0L 220 with an alpha one outdrive. I
I have a mercruiser 5.0L 220 with an alpha one outdrive. I am trying to figure out how to get some more ponies out of it. What is the difference between the 5.0L 220 alpha one and the 5.0L 260 alpha? … read more
Kenny
Kenny
Mercury & Mercruiser Diagnostics
Master's Degree
99 satisfied customers
I have a 2001 Rinker Captiva 232 with a 300 hp 5.7 liter mercury.
I have a 2001 Rinker Captiva 232 with a 300 hp 5.7 liter mercury. Last summer the RPM's starting topping out at 4000 and the top speed was around 40. Thats about a 1000 rpm drop and a 10 MPH drop. I t… read more
gearheadII
gearheadII
Bachelor's Degree
138 satisfied customers
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

3,161 satisfied customers

40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

John White

John White

Marine Mechanic

306 satisfied customers

11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

Marine Mechanic

23,324 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,409 satisfied customers

40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

Marine Mechanic

4,730 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Captain Dave

Captain Dave

Marine Mechanic

2,672 satisfied customers

USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience

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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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