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Old 03-09-2020, 17:02   #31
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Re: Yanmmar 4JH4-HTE 80HP 2007

Quote:
Originally Posted by skipperpete View Post
On your 4JH4-HTE there is a thermally operated coldstart device on the side of the injector pump with 2 hoses that allow coolant flow to the coldstart. When the engine reaches near operating temp the wax element expands and changes the injection timing. It would be useful to establish whether or not the mechanism is operating by checking it in the cold position and then again after the engine warms up. Itís the only thing I can think of that connects your engine problem directly to jacket water temp and itís easy to view the lever and spring without any tools other than a flashlight and mirror.
Pete.
Captsurfista,

The little solonoid thing, did it have the two hoses Skipperpete mentioned above?
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Old 04-09-2020, 13:31   #32
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Re: Yanmmar 4JH4-HTE 80HP 2007

Thanks, you BET!!...LOL!
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Old 04-09-2020, 13:43   #33
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Re: Yanmmar 4JH4-HTE 80HP 2007

Yes, the solenoid works with cooliing hoses.
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