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I have a quick question how do i know what out drive gear
I have a quick question how do i know what out drive gear ratio i have. I have a alpha one gen one so if I'm seeking replacement how do i know what to go with for ratio… read more
Ted G.
Ted G.
Rigger, Diagnostician
Vocational, Technical or Trade Scho
2,678 satisfied customers
Loss of rpm at cruise speed. Twin 4.3lx .Synchronizer
loss of rpm at cruise speed . Twin 4.3lx .Synchronizer fluctuates about 50rpm.noticeable difference in throttle position. seems to run ok. Plugs, wires ,cap and rotor replaced 3 yrs ago … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Have 2004 280 Sundancer twin Mercruiser 4.3's with Alpha 1
Have 2004 280 Sundancer twin Mercruiser 4.3's with Alpha 1 Gen 2 Outdrives. Everything worked last year but on de winterization the smartcraft gauges won't work for either engine. Engines run fine. No… read more
Charles
Charles
Certified Mercury Tech
5,752 satisfied customers
I have a early 90's 34 Sea Ray Sundancer. Twin 454 engines
James: I have a early 90's 34 Sea Ray Sundancer. Twin 454 engines with V-Drives. Just recently put the boat in for the season this week. I'm having RPM issues on the starboard engine. At idle everythi… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,507 satisfied customers
Carolina Classic 28: MY starboard Cummins 4BTA-3.9L engine
MY starboard Cummins 4BTA-3.9L engine takes almost a minute to accelerate on to the turbo. My port engine responds almost exactly with the lever. I reduced the pitch of the starboard propeller and it … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Hi, I am wondering about what is the optimum operating rpm
Hi, I am wondering about what is the optimum operating rpm for 1994 Mercruiser 7.4l v-8. Any idea… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,507 satisfied customers
I have a 2002 searay sundancer 280. It was serviced and put
I have a 2002 searay sundancer 280. It was serviced and put in the water in April. The first time we started the boat, the engines came on nicely but the RPMs would not go up. AFter a lot of checking … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Hi. I have a 2003 Mercruiser 4.3 MPI alpha one Gen II. I recently
Hi. I have a 2003 Mercruiser 4.3 MPI alpha one Gen II. I recently performed the following maintenence: New exhaust bellows, driveshaft bellows, shift bellows, water hose, and impeller. On the test run… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,507 satisfied customers
I have a 1998 Merc Cruiser 5.7L 250hp alpha gen.2 drive. Engine
I have a 1998 Merc Cruiser 5.7L 250hp alpha gen.2 drive. Engine overheats at 3800rpm. Temperture drops to 160 at 3200rpm. I have changed themostat and impeller and still have overheating problem thank… read more
Whitecap36
Whitecap36
Service Manager/Technician
Vocational, Technical or Trade Scho
1,557 satisfied customers
I have a 1978, sea ray 240 sundancer, compleatly restored,
I have a 1978, sea ray 240 sundancer, compleatly restored, I can not get it to come on the step, nor to go faster than 18mph. I put a dolphin on the out drive, gone thru six props. (rpm will not go ab… read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,664 satisfied customers
Have a new to me boat with two 5L mercruiser engines alpha
Have a new to me boat with two 5L mercruiser engines alpha 1 drives. I am almost sure the engines are fuel injected. My right engine has been quiting while under load slow speed. I also notice that th… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,507 satisfied customers
i have a dd 8v53 in a 30 egg [custom job] ,temp gauge reads
i have a dd 8v53 in a 30' egg [custom job] ,temp gauge reads 100 or less at idle, when i bring boat to plane [2200 rpm] and then back off to below 2000 rpm temp rises to 180 and stays there.if i open … read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
I have a 16 Galaxy bowrider (1980) with a 3.0L mercruiser
I have a 16' Galaxy bowrider (1980) with a 3.0L mercruiser 120hp I/O, Mercruiser outdrive (not the bravo or alpha). Recently changed props after the 14"x19pitch would only get me to 28 or 29 mph at 51… read more
Andy
Andy
Marine Repair Technician
Vocational, Technical or Trade Scho
16 satisfied customers
Can a motor slip at high RPM level when it is engaged/with
Can a motor "slip" at high RPM level when it is engaged/with a load on it? *I have two recently rebuilt MERCRUISER big block engines *I took out my boat, a 1987 35 foot SeaRay this afternoon *At 3200 … read more
shane j forrest
shane j forrest
Vocational, Technical or Trade Scho
270 satisfied customers
I have a 1998 Sea Pro with a Chevy 350 inboard/outboard with
I have a 1998 Sea Pro with a Chevy 350 inboard/outboard with alpha drive. The engine temp is good at idle, but runs hot when under load, like trying to get on plane. When you slow back down, the temp … read more
Rick Gay
Rick Gay
High School or GED
106 satisfied customers
i have a 1989 340DA sea ray with twin 7.4 carb. while out
i have a 1989 340DA sea ray with twin 7.4 carb. while out on the boat last night.. about 40 mins into the cruise heard a "bump" behind myself (starboard engine) sounded like someone closing a cabinet.… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
Hello, I have a 28 suntracker pontoon boat with a Mercruiser
Hello, I have a 28' suntracker pontoon boat with a Mercruiser 3.0 w/ alpha 1 outdrive 2.00 raito. I just purchased this boat and it had 40 +/- hrs on it. The problem it has is anything over 3200rpm an… read more
Master Tech
Master Tech
Service Manager/Technician
Vocational, Technical or Trade Scho
1,167 satisfied customers
i have a 275 sea ray (260da) powered by a 5.0 l 260 hp mpi
i have a 275 sea ray = (260da) powered by a 5.0 l 260 hp mpi on a b3 leg ,fuel consumption 55 lt- 60 lt an hour 4000 rpm with a boat speed of 25 kn Q. Is this a standard consumption rate or do i have … 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

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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