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I have a mercruiser 4.3 MPI, with an alpha one leg. constant
I have a mercruiser 4.3 MPI, with an alpha one leg. constant alarm sounding. Oil pressure guage sitting normal. Engine temp guage normal. I have dropped out the transmission oil and replaced. Still no… read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,739 satisfied customers
Mercruiser 4.3l mpi new, alarm beep every so often, no
mercruiser 4.3l mpi new, alarm beep every so often, no pattern to it. NO limits on power and no temps, etc out of line. … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 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
solid alarm on 2004 mercruiser 5.0 MPI only in gear. Will idle
solid alarm on 2004 mercruiser 5.0 MPI only in gear. Will idle and take fuel out of gear but put in gear and try to give it throttle and solid alarm and puts in guardian mode. shut off start right bac… read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,739 satisfied customers
Running my89 Mercruiser 5.7 260 hp, Alpha I outdrive yest;
Running my'89 Mercruiser 5.7 260 hp, Alpha I outdrive yest; after 15 min,at 3000rpm, sudden metallic grinding sound in engine compartment, and immediate engine stall. Able to restart after 10 min 'coo… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
How many km per1lt would i get from a 5.0 mercruiser in a 2004
How many km per1lt would i get from a 5.0 mercruiser in a 2004 24ft mustang fishing/cruiser… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a Mercruiser sterndrive 260 Hp MPI V8 engine in a 195
I have a Mercruiser sterndrive 260 Hp MPI V8 engine in a 195 Bayliner. The engine recently triggered an alarm in the dash (whilst driving) and from that event two effects have occurred. The first is t… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 2007 MerCruiser 4.3 MPI in a Monterey 194FS which
I have a 2007 MerCruiser 4.3 MPI in a Monterey 194FS which stalls when shifted into neutral most times. It re-starts immediately but makes for difficult docking in rough or windy conditions. What ic t… read more
James
James
Marine Mechanic
Vocational, Technical or Trade Scho
4,111 satisfied customers
Evening, I have a 2004 Searay 200 Sport, with a 4.3L MPI
Evening, I have a 2004 Searay 200 Sport, with a 4.3L MPI 220 Hp, in the spring I got the boat ready as I normally do and after trickle charging the battery I placed it in the boat. Upon taking it for … read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
Mercruiser runs fine at high speed (3000rpms). Each time I
Mercruiser runs fine at high speed (3000rpms). Each time I slow down to a low rpm boat runs rough then stalls. If I throw shift lever into quickly into neutral boat stalls immediately, every time. I a… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
2004 Chapparral 235 SSI with 5.0 260HP MPI, Model # OM663552.
2004 Chapparral 235 SSI with 5.0 260HP MPI, Model # XXXXX 370.0 hrs. Filled tank, was 1/2 full, drove for 15 minutes and alarm sounded.... beep, beep. Alarm then sounded 5 minutes later, beep beep (tw… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
Have a 2003 Bayliner Cierra; 5.0L Mercruiser, 2 BBL carb; Alpha
Have a 2003 Bayliner Cierra; 5.0L Mercruiser, 2 BBL carb; Alpha 1 Gen 2. Constant high temperature alarm with normal temp and oil pressure indications. Schematic shows two main inputs for alarm (oil p… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
i have a 98 merc cruiser 5.7 alpha with throttle body injection,
i have a '98 merc cruiser 5.7 alpha with throttle body injection, it has approx. 250 hours...having trouble w/shifting--engine stalling intermittently when shifting... it stalls when shifting out of g… read more
James
James
Marine Mechanic
Vocational, Technical or Trade Scho
4,111 satisfied customers
I have a 4.3 Liter Mercruiser 18 mariah speed boat. Started
I have a 4.3 Liter Mercruiser 18' mariah speed boat. Started the engine following winterizing at dealer and alarm sounded right away, without even getting warmed up. I thought maybe it was a bad switc… read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
I have a 1987 Sea Ray 25 express cruiser with a 260 Mercruiser
I have a 1987 Sea Ray 25 express cruiser with a 260 Mercruiser V-8. The shift handle is both throttle and shift with a neutral start switch. The switch works, and inspecting the mechanism with the cov… read more
John White
John White
Marine Mechanic
Vocational, Technical or Trade Scho
306 satisfied customers
Hope you can help me. I have a 30 sleek with a 500 hp and
Hope you can help me. I have a 30' sleek with a 500 hp and a bravo one out drive. the boat has 522 hrs on it. Approx. 2 years ago the drive got stuck in forward and would not go into reverse. I had it… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
Have a 2002 Cruisers Yachts 3275 with twin Mercruiser 5.0L
Have a 2002 Cruisers Yachts 3275 with twin Mercruiser 5.0L MPI Alpha's. The port engine will stall when it has a load on it over 2400 RPM's. It sends no engine trouble light ot tone and shows no fault… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
Myboat has a Mercruiser I/O 4.3L v6 and when I rais and lower
Myboat has a Mercruiser I/O 4.3L v6 and when I rais and lower the trim it makes a noise, sounds like belts sqweeking, what is the noise and how do I fix it? Also there is a resevoir on the top and in … 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.

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

Dominick

Dominick

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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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Jeff G.

Jeff G.

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Captain Dave

Captain Dave

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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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