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The housing on th injection pump on my Yanmar 6LPA-STP
The housing on th injection pump on my Yanmar 6LPA-STP cracked. … read more
Yachtwork
Yachtwork
Marine Engineer
Technical or Trade School
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I have a 13 year old Yanmar 4jh3-te. Sorry I sent that
The motor has 475 hours and runs at operating temps but has high oil pressure. We removed the sending unit and installed a mechanical gauge and it reads high as well. We then changed the filter and no change. We then changed the oil pressure control valve and housing and sadly no change. The yanmar rep says it can now only be the oil pump relief valve ( ugly $$$) as it is likely stuck. Is there a solvent I could try to run through the system prior to removing the front of the engine?… read more
Ted G.
Ted G.
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I am considering purchasing an Albin 28, it if fitted with a
I am considering purchasing an Albin 28, it if fitted with a yanmar 6LPA-STP Model engine, engine number M57814. I am trying to figure out if this motor was subject to the class action lawsuit regardi… read more
Jason
Jason
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I'm not a boat man but I'm learning fast. We have a speed
Hi. I'm not a boat man but I'm learning fast. We have a speed boat with 2 Yanmar 6LPA-STP engines used for day trips of passengers to islands. We are getting injectors break on these quite regularly. … read more
Boat Doc
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I have two 6LPA STP Yanmar .The stb one is short 400 RPM
I have two 6LPA STP Yanmar .The stb one is short 400 RPM comparison to the Port … read more
Jason
Jason
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Vocational, Technical or Trade School
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i'm looking into buying a boat with twin 2002 yanmar 370 hp's.
i'm looking into buying a boat with twin 2002 yanmar 370 hp's. what do you think of those motors?… read more
Jason
Jason
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Vocational, Technical or Trade School
21,048 satisfied customers
James, i need you to help me.I want to buy a boat with 2 yanmar 6LPA/STP (315HP). 50
Hello James, i need you to help me.I want to buy a boat with 2 yanmar 6LPA/STP (315HP). 500 hours.year 2004 Are you sure that if the color of the valve are grey I will have problems?. Thanks if you an… read more
Jason
Jason
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I am looking at purchasing a Albin Express Trawler in Monterey.
I am looking at purchasing a Albin Express Trawler in Monterey. It has the Yanmar 6LP-STE engines that apparently were a subject of a recall and law suit. Can you confirm with me that these engines we… read more
Jason
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I'm attempting to remove the injector pump on my Yanmar
I'm attempting to remove the injector pump on my Yanmar 3HM35F. Fuel delivery is plenty to the injection pump, but it has little spurt of fuel on the high pressure side (I removed the high pressure si… read more
boatmechanicma
boatmechanicma
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Hi-- I have a new Yanmar 6LPA-DTP/DTZP engine in my boat.
Hi-- I have a new Yanmar 6LPA-DTP/DTZP engine in my boat. I would like to get a printed page of the break-in procedure. Any thoughts? Thanks Steve… read more
dieselhub
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What is the problem with the Yanmar 6LPA-STP/STZP 315 HP motors
What is the problem with the Yanmar 6LPA-STP/STZP 315 HP motors with serial numbers ranging from 50101 to 53988. Is there a fix and who should perform it ?… read more
James
James
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i have a yanmar 6lpa-stp-stzp . it keeps blowing hoses they
i have a yanmar 6lpa-stp-stzp . it keeps blowing hoses they tell me it has a restriction, but where is the restriction?… read more
K. Kergan
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have twin 6lpa stp engines, about 1100 hours each,port engine
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Tan
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My Yanmar 2QM20 was running perfectly. During a 5 min hi RPM
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KKassel
KKassel
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I have a Yanmar on my sailboat, the boat is currently on the
I have a Yanmar on my sailboat, the boat is currently on the hard. I have drained all the water out of the raw water pickup to the engine block. I am concerned there is still water in the engine block… read more
Captain Dave
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My almost new 2007 Yanmar marine diesels 315s have smoked
My almost new 2007 Yanmar marine diesels 315's have smoked from the day I bought the boat until now. It's blue and and is pronounced when the engines are cold.… read more
Capt.Cory
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a pair of yanmar 6lpa-stp2 marine running with black smoke.
a pair of yanmar 6lpa-stp2 marine running with black smoke. 300 engine hours. any ideas or what to check??… read more
Diesel Boat Doc
Diesel Boat Doc
High School or GED
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Hi thought you may be able to HELP ! Im having trouble
Hi thought you may be able to "HELP"! I'm having trouble starting my Yanmar 3GM30F engine and thought you may be able to help. Here are the particulars: I installed the engine last year in my Island P… read more
Jeremy R.
Jeremy R.
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

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

Dominick

Dominick

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25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

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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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40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

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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