Hey all,

What is considered oil on the GPs? Actual oily buildup? I took out my old loop style plugs last week and they were black, but not oily per se.

Black is burnt carbon, normal.

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83 SD

84 CD

If it starts and runs OK, and you've adjusted the valves recently, why worry? It's silly to re-ring, rebuild or replace the engine, (corrective action for low compression) isn't it?

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CC: NSA

All things are burning, know this and be released.

82 Benz 240 D, Kuan Yin
12 Ford Escape 4wd

You're four times

It's hard to

more likely to

concentrate on

have an accident

two things

when you're on

at the same time.

a cell phone.

www.kiva.org It's not like there's anything wrong with feeling good, is there?

if you reamed the glow plug holes before the compression test you may have got some carbon particles on the valve seats while cranking the engine.If it starts and runs OK i wouldnt worry too much about it,however if you feel that it is not running good then perhaps another compression test is in order. Don

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Red Green "This is only temporary,Unless it works!"

97 E300D 157000 miles
87 300TD ?141k? miles

Right, it would be silly now - I have no plans to re-ring the engine any time soon (if ever). It started leaking some oil recently from under the valve cover and in other places, so I thought I would do this check to see where we are...

Did valve adjustment about last April - I may do another one this summer just for grins to check things out again... but overall the car runs pretty well - especially on the highway.

Looking to start making bio-diesel so this is just another step in checking the engine and working my way through the vehicle and frankly learning about its strengths (and weaknesses). Thanks all for your insights.

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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

Nice...its great to have a baseline so if problems do come up you have some data to fall back on.

You may consider doing an oil analysis from Blackstone if you are really keen on having a pre-bio history (I didnt do this).

dd

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'85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit)
'82 300D, 'Tex', 228k body / 170k engine ... summer car
'83 300TD Cali Wagon 210k, wife's car