Just getting ready to tackle the next job: measuring compression in my engine. I've read a lot of posts here about how to perform it and now my plan is as follows:

Do the test on a warm engine (bring up to operating temp and let is sit for 20-30mins) then begin.

Perform the tests through the Glow plug holes, so I can replace some of the GPs and ream out the holes in the process.

Remove all GPs, then install the HF glow plug attachment into each hole and crank it 8-10 times. Do the 'dry' test first and record the highest reading, then repeat with addition of 1 oz of motor oil in each cylinder that should have lower than expected readings.

Use anti-seize when re-installing the GPs back in place, re-test with an ohm-meter for proper resistance (around .7-.8 ohms) afterwards to make sure.

The problem that I'm anticipating as I start planning for this job is that it seems that there is just not enough room in the engine compartment between the IP and the block to do this work without first removing the hard fuel lines to get good access. I am really dreading taking off all the hard lines for several reasons (some of the warnings I've read here of the lines possibly being under tension from previous IP pump adjustment, stripped threads, developing a fresh leak, etc). Mostly, however, I am reluctant to do this because I can't find the necessary tool to remove and then tighten them. It seems one needs the proper wrench that will fit my torque wrench so I can snug up the fittings to proper torque at the end - I like to do things right. I've looked on some of the web-sites for this tool but no luck.

So, I'm looking for some guidance - where to get such wrench and any general comments or advice on the planned approach.

Thanks in advance --
James

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1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K