SST nessesary for 2H comp test??

[Winslow]

I need to check compression on 1987 HJ60 with 2H motor and 493,000kms. PO says engine rebuilt at 350,000, I'm interested to see what the numbers say. The FSM calls for an adapter that screws into glowplugs, SST 09992-00023. Is this really nessesary, have any of you been able to do this with parts that I might be able to find at a local auto parts store? Specifics appreciated. Vehical is in US and SST parts are hard to come by. Thanks, Winslow

 

[Tapage]

Why you wanna check your compresion numbers . ? ( just curious )

 

[lowenbrau]

Most diesel compression testers will have the adapter you need. Don't try to test compression on you 2h with one intended for a gasser. Its likely you will have over 400 psi. Also be sure to hold the fuel off while cranking. You wouldn't be the first guy to wreck a tester by letting the engine start.

 

[roscoFJ73]

You can buy adapter kits from ebay or if you take one of your glowplugs to a tool shop that sells mechanics tools they maybe able to match the thread.

 

[Fantom]

Not sure on the 2H but on the 3B the adaptor is a 10mm 1.25 thread (should be the same). I had some issues on my 3B with compression and I finally got the proper numbers once I disconnected the wiring to the EDIC. I tried with the linkage disconnected and it did not work.

 

[ivanhoe]

for my 3B, i've used a old glowplug for the treads and removed the inner guts. i brazed a adapter from the tester to it and voila! the tread is tapered on the glowplug for a better seal. i've interchanged the dial for a acetelyne tank one, higher psi compared to a gasser one. a cheaper version diesel compression tester, works good too.
hth,

 

[Winslow]

Thanks for the feedback! I'm looking into a repaint and carpet/upolstry job- I'd hate to spend all my money on bling only to find out the engine is shot. Hard starting has me worried, but oil consumption is nil, and power is good. I'll post some numbers soon.

 

[UpsideDown]

you have to determine why you're getting hard starting. Is it from a cold engine (bad glow plugs or timer circuit etc...) or is it still bad when it's warm (small amounts of air in the system could cause this)?

The standard diesel compression tools available locally (west coast of Canada) all come with a Toyota (or equivalent) glow plug type insert for testing the cylinders.

You should remove all the glow plugs, have the throttle held upen, and have the fuel shut off (via the EDIC on your 2H) to do the test.

The testers are not Toyota specific an should be available pretty much any place you can get a good diesel compression tester. These testers are NOT the same as a gas engine tester since they go to much higher numbers.

hth.
~j.