Yanmar 4LHA-STP fuel injectors - GONE

Rooster

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Four fuel injectors for Yanmar 4LHA-STP. Failed pop test, so replaced with new. These could, perhaps, be rebuilt with the proper skills and tools. Replacement cost is around $400 each, so rebuilding may be worth your while.

Yanmar part #719175-53200

Free for the asking - no longer available; have been shipped to another forum member 11/21/2021 732B7E9B-3FEE-4145-A52B-C55AA46BC7D2.jpeg 9A29E857-4A8D-4AF4-80E9-9DE1D0D494F9.jpeg 396C682F-4BFE-458C-97B0-023C7955245C.jpeg AA4AC331-437E-4477-83EA-D04F60A8506D.jpeg 45FD430A-AC6C-48B2-8321-901D973D3CAA.png
 
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Rooster

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Injectors have been shipped to another forum member. Glad the injectors will have a chance for a new life.

Cheers,
Rooster
 
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Rooster

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How many hours did you get out of the first set of injectors?
Boat (1985 Sisu 26) had 1992 hrs when we bought it in Dec last year (2020). Pulled the injectors at 2035 hrs. That’s when the pop test was done. Have very little information about how the boat was used during the engine’s first 2000 hrs of life. Boat was repowered in about 2005. Don’t know what kind of fuel treatment, if any, was used over the years. We are using treatments now, which should improve injector performance and lifetime. I’d be interested in any thoughts from the community on this.
 

Genius

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How many hours did you get out of the first set of injectors?
hours have nothing to do with injector life. Fuel quality and filtration system determines injector pump and injector life.
 

Rooster

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hours have nothing to do with injector life. Fuel quality and filtration system determines injector pump and injector life.
That’s good to hear. We upgraded the tired Racor single filter with a Seaboard SMX Double Double filter system. Put vacuum gauges on both stages so we can monitor the filters closely. Should have much improved fuel going to the engine.
 
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