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1986 Yanmar 2gm20F in a hunter 31. Recently got water in the
1986 Yanmar 2gm20F in a hunter 31. Recently got water in the tank. Removed all fuel and water from the tank, changed filters primary and secondary, changed high pressure fuel lines from the pump to th… read more
Yachtwork
Yachtwork
Owner Team Yachtwork
Technical or Trade School
2,044 satisfied customers
I bought a sailboat 2 months ago. The yanmar 4jhe won't
The yanmar 4jhe won't start . I've owned it for two months, it's always started perfectly and run smoothly. … read more
Yachtwork
Yachtwork
Owner Team Yachtwork
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2,044 satisfied customers
yanmar 2gm20f - was motor sailing - engine running well then
yanmar 2gm20f - was motor sailing - engine running well then slowed and stopped - I bled the low pressure side then bled high pressure side - engine will turn over sputter then stop -emits black exhau… read more
Jason
Jason
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Vocational, Technical or Trade School
22,043 satisfied customers
I have a Yanmar 2QM15. I changed the secondary fuel filter
I have a Yanmar 2QM15. I changed the secondary fuel filter the other day, and now my boat is belching out black smoke. When I originally changed the filter, I didn't realize the fuel had to be bled ou… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,507 satisfied customers
I have a 1980 Catalina 30 Sailboat with an original Universal
I have a 1980 Catalina 30 Sailboat with an original Universal 5411 Diesel engine in SF Bay. With blue exhaust, hard starting, alternator problems, I think it's time to repower. I hear I have two choic… read more
Yachtwork
Yachtwork
Owner Team Yachtwork
Technical or Trade School
2,044 satisfied customers
I have a 12 HP Ynamar Diesel in my C&C 27 sailboat. Because
I have a 12 HP Ynamar Diesel in my C&C 27 sailboat. Because of winds I ran the motor a lot during a week-long cruise. I discovered later that the motor was also burning my lubricating sump oil as well… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Thanks in advance for reading the post... I have a Yanmar
Thanks in advance for reading the post... I have a Yanmar 3GM30F on our 36 foot sailboat. I was out of the country (active duty military) for 8 months. During that time I had a friends come down and s… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
My Perkins 4-108 emits a lot white smoke on cold starts. In
My Perkins 4-108 emits a lot white smoke on cold starts. In addition I see fuel or oil floating on the water near my boat. I read on forums that this can be either a blown head gasket (which I doubt s… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,507 satisfied customers
I dont have the model # XXXXX me but it is on a 1986 hunter
I don't have the model # XXXXX me but it is on a 1986 hunter sailboat . Fifteen hp engine. Last night comming in from a night sail, noticed smoke comming from exaust or back of boat. It possably came … read more
Scott
Scott
Marine technician
Vocational, Technical or Trade Scho
543 satisfied customers
I have a Yanmar 1GM single single diesel on my small sailboat. I
I have a Yanmar 1GM single single diesel on my small sailboat. I was motoring when I heard a small pop from the engine, saw black smoke from the exhaust, and felt the engine getting erratic. I immedia… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a Yanmar 2Gm20F in a 22ft. Erickson sailboat it has
I have a Yanmar 2Gm20F in a 22ft. Erickson sailboat it has 400 hrs. on it. The problem I have is I was idling thru the harbor to the fuel house and when I tryed to throttle up it fell on its face and … read more
Yachtwork
Yachtwork
Owner Team Yachtwork
Technical or Trade School
2,044 satisfied customers
hi i have a inboard diesel engine-yanmar yse 8g 2 cylinder
hi i have a inboard diesel engine-yanmar yse 8g 2 cylinder 8 hp modrl se 8g . when idling ticking over discharse cooling water is clear when half throttle or full discharge. stooty black with cooling … read more
Yachtwork
Yachtwork
Owner Team Yachtwork
Technical or Trade School
2,044 satisfied customers
we have a 20 inch single cylinder Yanmar plate compactor,
we have a 20 inch single cylinder Yanmar plate compactor, deisel, have trouble starting, and when it does start, will take some time to get revs up, lots of smoke until it runs up to speed, what could… read more
Yachtwork
Yachtwork
Owner Team Yachtwork
Technical or Trade School
2,044 satisfied customers
I have a Yanmar YM30 diesel in my newly-acquired 32 ft sailboat.
I have a Yanmar YM30 diesel in my newly-acquired 32 ft sailboat. Previous owner had just installed this "nearly-new" engine with FWC and V-drive, all salvaged from another boat. (original installation… read more
Captain George
Captain George
Bachelor's Degree
3 satisfied customers
I have a 3 cylinder diesel engine in my sailboat and it is
I have a 3 cylinder diesel engine in my sailboat and it is spewing lots and lots of black smoke out the exhaust--it covers the back end of the boat in black soot. Here's the history: Rebuilt engine in… read more
Yachtwork
Yachtwork
Owner Team Yachtwork
Technical or Trade School
2,044 satisfied customers
I have a 38hp yanmar diesel in my catalina 36 sailboat. The
I have a 38hp yanmar diesel in my catalina 36 sailboat. The enfine has approximately 1300 engine hours. After motoring in seas of 4-6 feet (choppy steep waves) for about 1.5 hrs the engine starting lo… read more
Yachtwork
Yachtwork
Owner Team Yachtwork
Technical or Trade School
2,044 satisfied customers
Victory 35 Catamaran, 3gm30f yanmar, worked perfectly until
Victory 35 Catamaran, 3gm30f yanmar, worked perfectly until a hard-start on a cold morning. #3 cylinder not firing... lots of white smoke, no rpm change when decompression lever raised, injector was r… read more
Dan Boy
Dan Boy
Amusement ride technician
High School or GED
110 satisfied customers
I am very sad that your experts have not responded at all to
I am very sad that your experts have not responded at all to my query on my yanmar black smoke issue. This site to which I have paid £8.00 for is to my thinking a way to extract more money from he gul… read more
Yachtwork
Yachtwork
Owner Team Yachtwork
Technical or Trade School
2,044 satisfied customers
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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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