[Vwdiesel] 1.6L Diesel Compression

[Doyt W. Echelberger]

I re-read my Bentley on how to do a compression check on a VW diesel, to 
see if there was any mention about doing the check on a hot engine.

Bentley doesn't actually say what the temp should be, but it describes 
preliminary work that would take_ me _enough time for the engine to cool 
off considerably, if it had been warmed up: Bentley describes disconnecting 
the electrical wire from the stop control, removing the injector pipes and 
the injectors, and then putting the compression checker in place and 
testing each cylinder. And those checks are done without squirting in any oil.

The suggestion to squirt in some SAE 40 into the cylinder is for 
determining what is causing a low reading if you get one....so that would 
happen only after testing all the cylinders and comparing the readings 
.....which would allow a hot engine even more time to cool down.

The one time I checked compression (about 7 years ago) was on a cold n.a. 
VW diesel that had stopped running for unknown reasons. So, there wasn't 
any question of working on a hot engine.

Doyt
 >>>>>>>>>>>>>>>>>>>>>>>>>>
At 08:18 PM 11/24/2007, you wrote:
>   Problem is you're supposed to check compression on a hot
>engine.  Add oil, plug the one hole with a compression gauge
>and viola!  You get compression ignition using the oil as fuel!
>   Not likely to happen you say?  I had it happen on a Stock,
>Ford 302.  Pegged the gauge and it stuck there.  Trust me,
>I'll not ever try it on a diesel (so long as I'm actually thinking
>about what I'm doing!)
>      Loren