Mechanos
Veteran Member
I'm looking for a compression tester with an adapter to fit my Yanmar 3TNE88 engine. Not having much luck. Anyone know where I can get one without having to go through John Deere or Yanmar dealers?
Was in a hurry so I got from Yanmar, $1,600. QUOTE]
Holy crap! Why not just make one, or have a machinist do one up custom? I
understand the hurry, but $1600?!
If you haven't bought yet, Hoye tractor parts has them
I see he makes them on his lathe. Note that there isn't even any threading involved, as the
injector hole is smooth and a clamp holes it in.
I admit I have never performed a compression test on a diesel, tho I have many times on
gas engines and I have rebuilt several JD (Yanmar) direct-injection engines.
You may want to consider instead performing a leak-down test. That setup is not
expensive and only has to handle 100psi. Furthermore, it will help pinpoint the
failing component (rings or valves). That's what I prefer.