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I have twin D3-220s in my Jeanneau 36' power cruiser. When i
i have twin D3-220s in my Jeanneau 36' power cruiser. When i throttle up, there's not enough power to get the boat on plane, and she tops out at 3200 rpm, but only about 13 kts, instead of the usual 2… read more
Noel Schembri
Noel Schembri
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Hey i have a yanmar 6lp-stp2 that surging at idle and stalling after i advance rpms and back off. it is idling high at 1000 rpm . Its also not reaching anymore that 2100 rpm while underway … read more
Jason
Jason
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Vocational, Technical or Trade School
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Lower unit on Yamaha 150 seems to be slipping, Twin engines.
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Jason
Jason
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Vocational, Technical or Trade School
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only getting aprox. 10 psi boost [on each diesel] marine 330
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Diesel Boat Doc
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I have a 1996 Sea Ray with Cat 3116 TA engines. I cant get
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Cat Man
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My boat has a 1990 volvo 5.7 liter v-8 engine that is running
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Tan
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Volvo Penta Twin Diesel AQAD41A 1990 serial number XXXXXXXXXX
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Jason
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I am having VOLVO PENTA KAMD 300 INBOARD DIESEL TWIN ENGINES
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K. Kergan
K. Kergan
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I just got a used 2001 Maxum 4100 SCA with twin diesel cummins
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Yachtwork
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twin 430 hp diesel in a cruiser. 800 hrs. excessive smoking
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Jason
Jason
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Vocational, Technical or Trade School
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1988 Sport Fish twin 3208T 320Hp 1500 hours, both run great,
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Capt.Cory
Capt.Cory
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I own a 15,000#, semi-planing aluminum cruiser powered be a
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Jeremy R.
Jeremy R.
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I have twin marine volvo TAMD60 turbo diesels on a boat - They
I have twin marine volvo TAMD60 turbo diesels on a boat - They are 1987 with approx 1600 hours on them. They have been inactive since May - when I took out this past weekend they would not rev to the … read more
Ted G.
Ted G.
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A couple of months ago asked about a smokey volvo Port engine
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Capt.Cory
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I have a 1987 Windy 9800 boat with twin Volvo Diesel AQHD 6
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Yachtwork
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I have a 33ft Aquastar semi displacement 7 ton cruiser, with
I have a 33ft Aquastar semi displacement 7 ton cruiser, with twin 150 hp b series cummins/turbos on shafts. The port engine will rev to 2500 rpm under power, the starboard engine will only go to 2100r… read more
Dominick
Dominick
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I have a 2006 302 Monterey Cruiser with twin volvo penta 5.7
I have a 2006 302 Monterey Cruiser with twin volvo penta 5.7 OSI motors. The starboard motor seems to not be getting enough fuel. In idle or slow speed (around 1000 rpms) it sputters/surges & runs rea… read more
Dr. Joe
Dr. Joe
Bachelor's Degree
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Will growth on the boat of a boat, reduced the max
Will growth on the boat of a boat, reduced the max rpm? I have a 370 Cruisers Yachts with Twin 425hp, and I am only getting 3000 max RPMs. The boat has been sitting in salt water for 6 months, with no… read more
Ted G.
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Vocational, Technical or Trade Scho
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

2,242 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

21,048 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,409 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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