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Boat will start & run for about 10 min or so, then dies &
boat will start & run for about 10 min or so, then dies & wont re-start. Problem started while out on the lake. Ran fine, then started cutting out on lower rpm, but fine when throttled up. Parked it f… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 2003 Larson with a 4.3L V6 Mercruiser Alpha engine
I have a 2003 Larson with a 4.3L V6 Mercruiser Alpha engine – 2B carb. Problem – last year had the boat out on the water, 40-50 minutes in shut her off to drift and fish. Wouldn't restart – checked ca… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
2004 mercruiser 5.0 serial # ow029433. Replaces motor.
2004 mercruiser 5.0 serial # ow029433. Replaces motor. Engine ran fine for about an hour at the shop. Put it the lake, ran fine for about 10 min. , cut off. After a short period started up and ran aga… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Having problem with my Mercruiser 4.3 was driving about 4000
Having problem with my Mercruiser 4.3 was driving about 4000 RPMs on motor shut down her lifter noise shut it down within 30 seconds check underneath the four wire problems or anything of that nature … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Dewinterized boat ran fine for 20 minutrs started to get a
dewinterized boat ran fine for 20 minutrs started to get a bit hot about 185 shut off waited 5 min stated again ( ignition switch loose ) got hot after 5 min shut it off tightened switch and tried aga… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 99 7.4 mpi.starts a runs perfect till it gets hot
I have a 99 7.4 mpi.starts a runs perfect till it gets hot then starts surging. Also is getting way touch fuel. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 2005 Bayliner 219SD with a 5.0 mercruiser 220hp I/O.
I have a 2005 Bayliner 219SD with a 5.0 mercruiser 220hp I/O. Took it out today and it ran perfect for the first 30-45 minutes, then it just started losiing power and sputtering like it was out of gas… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 92 VIP with a mercruiser 6 cyl, it will start and
I have a 92 VIP with a mercruiser 6 cyl, it will start and run fine for about 45 sec - 1 min then die but will start right back up, I've replaced fuel pump, sucked all the gas out of tank and started … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I have a 2005 Monterey with Mercruiser 5.0 that will run fine
I have a 2005 Monterey with Mercruiser 5.0 that will run fine for about 45 mins to an hour and the will start to lunge or skip then lose power and right before it stalls will make a loud pop in the en… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a volvo 5.0l gxi. Recently we were trolling all day
I have a volvo 5.0l gxi. Recently we were trolling all day long then all the sudden the boat shut off like someone turned the key off. We tried immediately restarting and it would just crank. After we… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Engine # ***** 654200 Type; Mercruiser 454 MAG mpi Horizon Build
Engine # ***** 654200 Type; Mercruiser 454 MAG mpi Horizon Build date; 2000 or 2001 Problem details; 2010: First failed to start at fuel dock 3 years ago about the second day the NEW engine was restar… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
Hi, I have a 2006 Searay Amberjack 290 with twin T-VD-350 Mercruiser
Hi, I have a 2006 Searay Amberjack 290 with twin T-VD-350 Mercruiser Marnum MPI Horizon engines (T-300 hp). It is inboard/v-drive, fuel injected, and has the Mercruiser Smart Craft System. The engines… read more
Ted G.
Ted G.
Rigger, Diagnostician
Vocational, Technical or Trade Scho
2,678 satisfied customers
I own a 1990 70hp Evinrude. The motor starts easy, runs smooth
I own a 1990 70hp Evinrude. The motor starts easy, runs smooth and seems to function perfectly except when I stop fish for about an hour. Then I can't start it. This happened at least a dozen times la… read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,629 satisfied customers
my 30 hp marine yanmar has 245 hours,,i went camping in our
my 30 hp marine yanmar has 245 hours,,i went camping in our sailboat,,when i got up this morning to start the moter it started right up but then began to bounce around on the mounts if i give it gas p… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a 1990 mercruiser 3.0 litre. Was runningfine until one
I have a 1990 mercruiser 3.0 litre. Was runningfine until one day just started coughing and backfiring like crazy. Few minutes later smooth as anything. Next time it started and after 4 or 5 min, shut… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a 1986 century boat / with a mercruiser 350 cu 4bb
I have a 1986 century boat / with a mercruiser 350 cu 4bb carb. and a thunder bolt ignition system . it has always run file but, today i ran boat in the lake for about an hour and a half . I felt the … read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a Perkins 4-107 in a sailing yacht. Last trip out, it
I have a Perkins 4-107 in a sailing yacht. Last trip out, it ran fine for 30 min, and then started making a loud "knocking" noise. Temp ok, oil pressure ok,RPM steady. I shut it off and sailed back to… read more
Diesel Boat Doc
Diesel Boat Doc
High School or GED
120 satisfied customers
I have a 20 foot boat with a 1998 5.0 mercruiser 220 hp/2 barrel
I have a 20 foot boat with a 1998 5.0 mercruiser 220 hp/2 barrel carb. Engine starts fine when its cold (barely crank it and it fires right up). Once its warm and sits for awhile (10 mins) its harder … read more
ROCKET
ROCKET
MASTER CERTIFIED TECH
Vocational, Technical or Trade Scho
426 satisfied customers
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

2,678 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

22,043 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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