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I have 1977 20' fiberform, gm 305 mercruiser 228. after 15
hi jason. my name is ***** ***** have 1977 20' fiberform, gm 305 mercruiser 228. after 15 to 20, it dies. will only run with key in start position. ive replaced ignition switch. any ideas? dont want t… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
20,550 satisfied customers
I have a 1981 4cyl. 224ci and iam not getting fire out of
I have a 1981 4cyl. 224ci and iam not getting fire out of the coil that is new. plus when the points are closed iam reading 12 volts on both sides of the coil. … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
It was running perfect, died at wot ,now wont start, it has
it was running perfect , died at wot ,now wont start … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
I turn the key to start and it turns over, as soon as I
I turn the key to start and it turns over, as soon as I release the key the engine shuts down. I have a Mercruiser 4.3 … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
A 351 inmar is having trouble firing(spark). When a SUV
a 351 inmar is having trouble firing(spark). When a SUV added power through jumper cables it fired. Put a new battery in, not the solution. Put a new coil in, seemed to be the solution, launched boat,… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
1975 houseboat. 2 ford 225hp. port engine refused to crank.
1975 houseboat. 2 ford 225hp. port engine refused to crank. now i have to hot wire it to run. once hot wired, it runs great. problem in ignition/run system. have replaced switch, solenoid, and coil. w… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
I have a 1976 Mercruiser 165 IO on a 23' Allmand My ignition
I have a 1976 Mercruiser 165 IO on a 23' Allmand My ignition has failed twice now after replacing coil, points, condenser, plugs After about and hour of running, especially at idle, it shuts down and … read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
Afternoon I have a 1980 260 Mercruiser new engine 2 years ago, replaced most parts E
afternoon I have a 1980 260 Mercruiser new engine 2 years ago, replaced most parts Engine running like a champ them stalled and would not start. When I check the voltage at the coil I am only getting … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
I bought this boat,its been sitting up since last year. i got it home and unhooked the lin
i bought this boat,its been sitting up since last year. i got it home and unhooked the line going to the gas tank and put it a clean container of gas and it fired right up ran for about 2 or 3 minutes… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
20,550 satisfied customers
My inbd 350 ci volvo isn't getting any ignition voltage to
My inbd 350 ci volvo isn't getting any ignition voltage to the coil and will crank and start but won't run after returning the key to ignition position. When I jumper the + side of the coil to the bat… read more
K. Kergan
K. Kergan
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Vocational, Technical or Trade Scho
1,031 satisfied customers
having trouble starting 1976 silver line inboard/outboard 140.replaced
having trouble starting 1976 silver line inboard/outboard 140.replaced points,plugs,fond,coil,cap rotor.turns over fine.doesn't act like its getting fire… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
1988 mercruiser 3.0, 130hp starts easily but stops after it starts. Changed all fuel filte
1988 mercruiser 3.0, 130hp starts easily but stops after it starts. Changed all fuel filters(2),ignition switch, checked fuel line(clear)and removed anti syphine valve. Could the problem be electrical… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
20,550 satisfied customers
I HAVE TWIN MERCRUISER 5.7 ALPHA 2BBL CARB ENGINES WITH ELECTRIC
I HAVE TWIN MERCRUISER 5.7 ALPHA 2BBL CARB ENGINES WITH ELECTRIC FUEL PUMPS. THIS DESIGN DOES NOT HAVE RELAYS OR ECM THAT I CAN SEE OR CONFIRM. THE LEFT ENGINE WILL CRANK, FIRE AND RUN PERFECT WHEN CO… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 4.3 v6 mercruiser. It will turn over and start for
I have a 4.3 v6 mercruiser. It will turn over and start for just an instant, but won't run. I tested the ignition and I have spark until the engine starts, then it shuts off. (no spark) Please help.… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I am trying to troubleshoot a thunderbolt iv. I am unable to
I am trying to troubleshoot a thunderbolt iv. I am unable to get 12v at the coil. I can jump directly to the coil and the motor will start but will only turn over without jumper wire. Can you tell me … read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 86 mercruiser 470 that is not getting any spark. How
I have a 86 mercruiser 470 that is not getting any spark. How do I track down what is failing?… read more
gearheadII
gearheadII
Bachelor's Degree
138 satisfied customers
1986 Inboard/Outboard OMC 3liter 4 cylinder engine will crank,
1986 Inboard/Outboard OMC 3liter 4 cylinder engine will crank, but not catch. Current: When you turn the key to "start" the starter motor engages and, if you push on the throttle, it will spin up and … read more
Greg Robinson
Greg Robinson
Senior service manager
Vocational, Technical or Trade Scho
199 satisfied customers
Hope you can help. I have a 1973 starcraft with a 140 hp mercruiser.
Hope you can help. I have a 1973 starcraft with a 140 hp mercruiser. Engine runs but won't shut off with the key. Changed the ignition switch and still won't shut off. Any ideas where I should look ne… read more
Dominick
Dominick
Marine Mechanic
Vocational, Technical or Trade Scho
1,009 satisfied customers
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

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

Dominick

Dominick

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

John White

John White

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Jason

Jason

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Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

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

Jeff G.

Jeff G.

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Captain Dave

Captain Dave

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