YM 1700 hard starting

[normde2001]

Diesel Engine Compression Tester 2 Pc

Has anyone tried this, and/or know if any of these adapters will work on Yanmar?

 

[Jtullis13]

Diesel Engine Compression Tester 2 Pc

Has anyone tried this, and/or know if any of these adapters will work on Yanmar?

I have seen that before, but have never used it or know if it will work on our Yanmars

 

[normde2001]

I have seen that before, but have never used it or know if it will work on our Yanmars

When/if my time comes I will get that, then see about the adapter.

 

[B man]

The that Hoye Tractors out Iowa Park Tx. has uses the clamps that hold the injectors in. I will use wood and solvent to polish the tips and toothpicks to clean the jet(YouTube). Hopefully the UPS guy gets here soon with the injector puller.

 

[California]

Diesel Engine Compression Tester 2 Pc

Has anyone tried this, and/or know if any of these adapters will work on Yanmar?

I think you need a dummy Yanmar injector as an adapter between any gauge kit, and the head.

Hoye sells one that they had to have custom designed, so the adapters in common kits apparently aren't the right ones for our Yanmars.

 

[B man]

Pulled the injectors. The Teflon washers under them are shot, had a heck of a time getting the back cylinder’s seat out so it could be cleaned. They are both clean and functioning well. Now to get the washers so a compression test can be done. I was able to rent the slide hammer from Hoye for $10 for ten days, had them both out in about ten minutes, that thing works like a champ.

 

[clemsonfor]

I may end up going to Iowa Park for work this year. If I do I hape to make a trip to Hoye and Meet Aaron @Hoye Tractor !!! Buy a few small things while I'm out there.

 

[B man]

They have been great to work with. Shipping is a bit high, since I’m only 130 miles from them, but that’s the way it is anymore.

 

[thepumpguysc]

I was working on a machine that I HAD TO get the tool/puller for..
I started out "renting" it for 10.00.. Then I looked at the invoice & shipping..
It was 25.00 to get it, it was gonna be 25.00 to ship it back + the 10.00 rental..
I called them up & told'm to mark that one "SOLD".. Lol
Its a BEEFY tool.. very well made.. even if u had the "plans"/specs, u probably couldn't get one made or that price.??

 

[thepumpguysc]

THAT compression tester is for testing thru the "glow plug" hole..
THIS ONE is for testing thru the injector hole..
Diesel Compression Tester Set
I haven't tried it on a Yanmar tho..
One thing about getting the big kit is, u can always turn around & sell it after your done..

 

[B man]

Finally got the compression testing tool, and the verdict is....... got to do a head job. 200# was all I could get out of it, at least the cylinders are even, within a pound or two. Stinks having to work on it with a small budget, but I am learning all about the motor end.

 

[thepumpguysc]

" a head job"?? Don't u mean an engine overhaul??
Whats the head have to do w/ low compression??
UNLESS the valves were set wrong, throwing compression out before its time..
The PISTONS & RINGS make compression..

 

[normde2001]

200 psi compression, both cyls after a ring job. You need to start from scratch and check everything, unless something wrong with test procedure..

 

[careyo63]

Both low with the same amount of pressure sure sounds like a Valve problem. Esp. New rings. When you pull the head I'd be looking at the Exhaust valves hard and check they are seated. Won't be surprised if they're not......

 

[clemsonfor]

Yea you already built this thing? Either your cylinder liners are huge and wallowed out (I don't remember if you replaced them bit I was thinking not) , or like Pump guy said your valves are seriously out of wack or your linkage in the head for comp relealse is hung open under valve cover you missed something or there was an assembly problem.

 

[clemsonfor]

I'd pull the valve cover and check valves first. Before I tore anything down

 

[careyo63]

#70. Valves working correctly he stated and the Decompression linkage? Didn't say he checked the Adj. though. so that could be a problem.

 

[Jtullis13]

I would check the decompression linkage first, that's easy, and then dig further if the problem persists

 

[careyo63]

#70 B man
Good air flow in and out. Lower end is done also. Head looked good, valves doing what they should. Decamp working correctly. Got to check the injectors. Then I guess the pump would be next. Should be like new then. I’m like you guys, compression, air, (fuel?) should start. Will keep at it, kinda bullheaded about things

Spelling error and I'm fairly sure he was meaning to say Decomp. Not decamp.......
I'm still guessing that's the problem. Exhaust and Decomp.. But the intake valves open or not seating causing the same amount of loss and low pressure is very doubtful. So just just a drop in the bucket guess is why I say Exhaust or decompression. But the H-Gasket could be a lot thinner than the old one causing the V-Adj. to change dramatically..

 

[winston1]

#1 post: "YM 1700, new head gasket, new 2kw starter, will only start with wide open throttle (sometimes) usually with a little ether. What in Samhill is going on with it? TY!"

Could be broken piston lands.