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I have a twin screw 34' sea ray sedan, the starboard engine
i have a twin screw 34' sea ray sedan, the starboard engine will not go over 3000 rpm under load but will rev over 4 grand in neutral. i have checked timing,changed electronic ignition module, changed… read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,666 satisfied customers
1998 Sea Ray 330 with twin 7.4 l Mercruisers. 1998 Sea Ray
1998 Sea Ray 340 with twin 7.4 l Mercruisers. The port engine is falling off the rpm's. Brought it up to 3400 & then suddenly I'm drops down below 3000. Temp is fine. Runs smooth at 2200. Had full work done last year. All risers, belts plugs, tuneup, etc, … read more
Ted G.
Ted G.
Rigger, Diagnostician
Vocational, Technical or Trade Scho
2,678 satisfied customers
I have a 2005 Sea Ray with twin 8.1 496 engines. One engine
I have a 2005 Sea Ray with twin 8.1 496 engines. One engine is running so rich after a weekend we are using 20 gals of fuel more than the other engine. Is this a sensor issue or idle control valve? Lo… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have twin mercruiser 8.1s engines on a 360 sea ray. We
I have twin mercruiser 8.1s engines on a 360 sea ray. We replaced the starter and the slave solenoid on the starboard engine. When we try to turn the engine on, we get a clicking sound from the slave solenoid and nothing else. The fuel pump doesn't even come on when we try to turn it on … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I just purchased a 1986 Sea Ray 340 sedan bridge and would
I just purchased a 1986 Sea Ray 340 sedan bridge and would like to replace the sea water pump and alternator belts on both engines but cannot find information on how the belts are tension-ed. In parti… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 2003 Sea Ray with twin 8.1's looking for prop size.
I have a 2003 Sea Ray with twin 8.1's looking for prop size … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 2003 sea ray 340 sundancer with twin Mercury 8.1
Hi, I have a 2003 sea ray 340 sundancer with twin Mercury 8.1 horizons. All of a sudden the starboard engine when In gear only reaches a max rpm of 3600, while the port maxes at 4200. In neutral howev… read more
Charles
Charles
Certified Mercury Tech
5,752 satisfied customers
I have a Sea Ray 300 Sedan Bridge with twin 260HP Mercruiser
I have a Sea Ray 300 Sedan Bridge with twin 260HP Mercruiser Inboard engines. They run fine but the port engine idles at 1000RPM and the starboard at about 700 how do I synchronize the two engines? … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 2005 390 Sea Ray with twin 8.1s mercruisers with closed
I have a 2005 390 Sea Ray with twin 8.1s mercruisers with closed cooling system. The port engine is leaking coolant into the raw water of the system. I believe that it is leaking through the Heat Exch… read more
Jason
Jason
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Vocational, Technical or Trade School
22,043 satisfied customers
Hello, I am thinking of buying a 1989 Sea Ray 340 Sedan Bridge.
Hello, I am thinking of buying a 1989 Sea Ray 340 Sedan Bridge. It is a one owner boat that has been sitting in Long Beach Harbor since purchase. The problem is the couple that bought her never used h… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 26 foot, 1978 Sea Ray Sundancer. It has an 8 foot
I have a 26 foot, 1978 Sea Ray Sundancer. It has an 8 foot beam. I ordered the boat and have been the sole owner since I took possession on Memorial Day weekend in 1978. I ordered the boat with twin M… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,507 satisfied customers
I have a 7.4 Mercruiser fuel enjected in a 2000 Sea Ray 340.
I have a 7.4 Mercruiser fuel enjected in a 2000 Sea Ray 340. Both engines are not idling correctly upon start up. I have to increase the throttles to keep them running. If I bring them back to idle, t… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
What is available to Build into the Engine Area of a Sea Ray
What is available to Build into the Engine Area of a Sea Ray Sundancer 29ft inboard 5 Litre mercruiser Twins With Legs 4 K.W. single Phase 240 Volt 50 Cycle.Petrol Driven, Salt water Cooled ,exhaust t… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
Have twin 2007 Mercruiser 8.1S fuel injected inboards on a
Have twin 2007 Mercruiser 8.1S fuel injected inboards on a 37' Searay. Was cruising at 3200rpm when port eng backed down on rpm's and would not maintain an equal balance with stbd eng. Replaced the in… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
1989 mercruiser bluewater 7.4 ltr inboards. I see the pumps,
1989 mercruiser bluewater 7.4 ltr inboards. I see the pumps, where is the impeller located inside the housing and how is the best way to replace it? These are reverse mounted engines… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,507 satisfied customers
I have twin 1998 Mercruiser 7.4L Inboard engines on my Sea
I have twin 1998 Mercruiser 7.4L Inboard engines on my Sea Ray 330DA and this weekend I noticed that the starboard throttle lever seems to stop working (rpm will not increase) when positioned halfway … read more
Ted G.
Ted G.
Rigger, Diagnostician
Vocational, Technical or Trade Scho
2,678 satisfied customers
I have twin Mercruiser 8.1 inboards on a Sea Ray 340 sundancer
I have twin Mercruiser 8.1 inboards on a Sea Ray 340 sundancer and experience the following problems in my starboard engine: - Engine would not go above 3800RPM - LOW PSI - varies from 0 to 9 PSI - Ov… read more
Dominick
Dominick
Marine Mechanic
Vocational, Technical or Trade Scho
1,009 satisfied customers
How to time my Mercruiser 351 in my 19 ft Sea ray out of water. Does
How to time my Mercruiser 351 in my 19 ft Sea ray out of water. Does it need to be warmed up like a car? & timing specs. Thanks Todd… read more
gearheadII
gearheadII
Bachelor's Degree
138 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

11,507 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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