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2013 cobalt, mercury 5.0, was driving at to quit. will crank
2013 cobalt, mercury 5.0, was driving at to quit. will crank but not start. has the one beep when you turn on the key, then cranks but does not start. I replaced the coul, the distributor, cap, and mo… read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,739 satisfied customers
I have a 2007 5.0 mpi Mercruiser which is problematic.
Hello, I have a 2007 5.0 mpi Mercruiser which is problematic. Advancing the throttle from idle slowly (warm or co!d) the motor wants to stall. Pulling the throttle back to idle it always runs smoothly… read more
Boat Doc
Boat Doc
253 satisfied customers
Mercruiser 5.0 mpi. I'm getting a double beep as I cut the
Mercruiser 5.0 mpi. I'm getting a double beep as I cut the engine back to idle. Then the engine died and I couldn't restart. Put in a new battery and tried again. Wouldn't start unless I put the throt… read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,739 satisfied customers
I have the same problem with my boat,how was this resolved, I changed manifolds,risers, el
I have the same problem with my boat,how was this resolved, I changed manifolds,risers, elbows,sea water pump, sensors thermostat still gets hot engine has only 98hrs… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a pair of Mercruiser 454 mpi v-drive engines in my
I have a pair of Mercruiser 454 mpi v-drive engines in my boat. The port angine has a rattling sound coming from just forward of the transmission at idle. The noise goes away when I bump the rpm up to… read more
Tan
Tan
MerCruiser Certified Technician
11,507 satisfied customers
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
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
my alarm on my 2005 5.0 mpi w B3 sounds constantly when cruising
my alarm on my 2005 5.0 mpi w B3 sounds constantly when cruising above 3500 rpm but I am only running at 175 degrees. elbows get hot and then cold quickly… read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,739 satisfied customers
I have a 97 chaparral sunesta 210 with a 5.0 mercruiser engine
I have a 97 chaparral sunesta 210 with a 5.0 mercruiser engine and a mercruiser alpha one outdrive. It has 476 hours on it. Yesterday we were traveling at 35 mph for about an hour when suddenly the rp… read more
Tan
Tan
MerCruiser Certified Technician
11,507 satisfied customers
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
Malta Tech
Malta Tech
Marine Tech
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TAN, 1999 Mercruiser v8 5.0 EFI timing procedure needed. What
TAN, 1999 Mercruiser v8 5.0 EFI timing procedure needed. What is the correct timing procedure for this engine? Thanks… read more
Tan
Tan
MerCruiser Certified Technician
11,507 satisfied customers
I have a 1998 Searay 290DA Sundancer with twin - 5.0 EFI Mercruisers
I have a 1998 Searay 290DA Sundancer with twin - 5.0 EFI Mercruisers and Alpha one drives The boat has 310 hours on it and had been used very little before I purchased it in 2008 For the past several … read more
Ted G.
Ted G.
Rigger, Diagnostician
Vocational, Technical or Trade Scho
3,152 satisfied customers
I have a 2003 5.0 MPI Mercruiser, that has a steady ticking
I have a 2003 5.0 MPI Mercruiser, that has a steady ticking noise at idle speed and incrases as the engine rpms increase.. Engine has 228 hrs. Is this exhaust related or could it possibly be the visco… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a Mercruiser 350 MAG Mpi it is in a tige 21i. (Inboard).
I have a Mercruiser 350 MAG Mpi it is in a tige 21i. (Inboard). Recentley after using the boat all day with no issues went to start and had a hard time. Once it started it would not idle. Above 1000 r… read more
Ted G.
Ted G.
Rigger, Diagnostician
Vocational, Technical or Trade Scho
3,152 satisfied customers
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
MerCruiser Certified Technician
11,507 satisfied customers
I have a 2000 Mercruiser 5.0 EFI in a Sea-Ray 210 with 350
I have a 2000 Mercruiser 5.0 EFI in a Sea-Ray 210 with 350 hours on it. On Saturday I was on Lake Michigan and as soon as I got out of the no-wake zone and went full throttle, the boat didn't seem to … read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a brand new mercruiser engine fresh water cooled 5.0
I have a brand new mercruiser engine fresh water cooled 5.0 fuel injected MPI. It has 36 hours on it My question is: When I run the boat to 4200 rpm the engine alarm comes on and the engine goes down … read more
Dr. Joe
Dr. Joe
Bachelor's Degree
198 satisfied customers
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
Marine Mechanic
Master's Degree
2,672 satisfied customers
I have a marine power MPI 454 that was rebuilt...the engine
I have a marine power MPI 454 that was rebuilt...the engine seems to run great, but when throttling, I must go slowly or the engine will die...also if I pull back the throttle after being above 2000 r… read more
Mechman45
Mechman45
Vocational, Technical or Trade School
152 satisfied customers
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

3,152 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

11,507 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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