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I accidentally hooked up my battery backwards on my boat. It
I accidentally hooked up my battery backwards on my boat. It has a 454 in it and I took the header and starter off to try and find the problem, no luck yet… read more
Tan
Tan
MerCruiser Certified Technician
11,482 satisfied customers
Hello again Tan I have another question related to the
Hello again Tan I have another question related to the exhaust system on my boat. The old exhaust hose that went to the 350 is very hard and not easy to bend so I have cut that hose off and would like… read more
Tan
Tan
MerCruiser Certified Technician
11,482 satisfied customers
On my Mercruiser 454 I have an oil cooler and a power steering
On my Mercruiser 454 I have an oil cooler and a power steering pump cooler and I want to know if both of these are needed? If they are needed how do I hook up both the oil cooler and the power steerin… read more
Tan
Tan
MerCruiser Certified Technician
11,482 satisfied customers
Good Morning, I have been couple things and here are the reports; These
Good Morning, I have been couple things and here are the reports; These are folllowing question to prior one. Cylinders pressure are all around 120 psi, is this normal for the projet omc 115 motor? Th… read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
I have a bayliner 2855 I took the 350 omc with a cobra foot
I have a bayliner 2855 I took the 350 omc with a cobra foot I took that out and installed a 454 merk with a bravo 1 foot my problem is that we can not adjust the sifrter cable to work properly I have … read more
Noel
Noel
Marine mechanic
Diploma
44 satisfied customers
I have a 454 in my boat and it was running perfect shut it
I have a 454 in my boat and it was running perfect shut it off and now it won't start I replaced the complete distributor and it is getting fuel what would make it not start could a dragging starter d… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
OK, got a 92 w/ 454s & OMC king cobras (I know how bad they
OK, got a 92 w/ 454's & OMC king cobras (I know how bad they are) I am new to this boat & don't understand the shifters. Apparently there is no neutral throttle, there is no button like I am used to o… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
1986 Bayliner,18ft.4cyl SOHV Ford engine,I/O.Alternator putting
1986 Bayliner,18ft.4cyl SOHV Ford engine,I/O.Alternator putting out 14.5V but only 12V at the battery. No voltage at the ignition switch. Volt meter in dash says only 11.0V.What do you think? What sho… read more
Abiorca
Abiorca
Proprietor
Vocational, Technical or Trade Scho
1,768 satisfied customers
OMC King Cobra w/Spitfire and a 4-bbl Holley carb. When I
OMC King Cobra w/Spitfire and a 4-bbl Holley carb. When I first took it out after purchasing, it ran well at various rpms for around an hour before I stopped to wait for others to join me on the boat.… read more
briggs archer
briggs archer
master marine mechanic
Associate Degree
374 satisfied customers
i have a 94 chriscraft 237 concept 7.4 liter keeps getting
i have a 94 chriscraft 237 concept 7.4 liter keeps getting backwash through egaust putting water on top of pistons and in oil… read more
Tan
Tan
MerCruiser Certified Technician
11,482 satisfied customers
I HAD A 350 IN A BAYLINER CIERA 2855 I INSTALLED A 454 WITH
I HAD A 350 IN A BAYLINER CIERA 2855 I INSTALLED A 454 WITH A BRAVO 1 THE SHIFTER CABLE IS NOT THE SAME IS THERE A ADAPTOR OF SOME KIND THAT I CAN GET SO THE OMC CABLE WILL ADAPT TO THE MERC… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
i have a 2855 bayliner that is powered by a 350 omc with a
i have a 2855 bayliner that is powered by a 350 omc with a cobra outdrive .it is way underpowered so i bought a 454 with a bravo one outdrive now my question is . is the harness from the omc compatibl… read more
Tan
Tan
MerCruiser Certified Technician
11,482 satisfied customers
I have a 1993 4Winns Horizon 230. The motor is an OMC King
I have a 1993 4Winns Horizon 230. The motor is an OMC King Cobra Spitfire 454. We've had problems with it stalling out while running. It starts and idles fine. However, while pulling a skier or tubers… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
i have a 86 sea ray 340 suncruiser with twin omc 454 chevrolets,
i have a 86 sea ray 340 suncruiser with twin omc 454 chevrolets, the starboard engine hasa burnt piston, , i have the engine out ,,, can anyone tell me what rotation this engine is? is it standard or … read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
I just purchased a 23 Seaswirl with what I think is a 454
I just purchased a 23' Seaswirl with what I think is a 454 Volvo Penta engine but I,m not sure. The engine has the letters OMC on the both sides and have been told that it's not a Volvo because of the… read more
Rick Gay
Rick Gay
High School or GED
106 satisfied customers
Hi ! I heard about an injection system kit for a cobra OMC
Hi ! I heard about an injection system kit for a cobra OMC engine (7,4 litre) in replacement of the holley carburettor . I cannot find any in my search . Can you help please ? Thanks a lot Stefano (la… read more
Expert-Repair
Expert-Repair
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
11 satisfied customers
Is it possible to have oil pressure that is too high The pressure
Is it possible to have oil pressure that is too high? The pressure on my analogue gauge is reading near the max, at about 70psi, (80 is the max reading) I just had an oil change. The engine is a 1998 … read more
Expert-Repair
Expert-Repair
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
11 satisfied customers
454 crusader rebuilt year before last ran great last season.
454 crusader rebuilt year before last ran great last season. has electronic ignition new coil found electronic ignition wired wrong fixed. wires loose fixed new plugs they are correct. Bring speed up … read more
gearheadII
gearheadII
Bachelor's Degree
138 satisfied customers
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Jeff G.

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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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