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Old 02-06-2006, 12:01 AM
Brian Carlton Brian Carlton is offline
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Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by rkpatt
I tried a different injector on # 2 and it ran a lot better . However there was still a lot of blue smoke and the puffing blowby .

I fabricated a compression gage out of an old injector housing plumbed to 500 psi pressure gage . I got readings of : #1-225 #2-125 #3-50 #4-250 #5-225 #6-125 . I put in a tablespoon on oil in # 2 and nothing changed, tired it in #3 and compression went up to to #150 .

It sure sounds like bad rings .

Is it worth doing leak down test at this point?


Can the oil pan the dropped whit the engine in the car to do a " poor
man's" rod bearing and ring replacement ?

Thanks

I have to tell you a story today.

I started the '86 SDL for the first time in about 30 days or so. Clouds and clouds of blue smoke. Ran rough for at least 90 seconds. Usually it clears up faster than this, but, I didn't run the glow plugs long enough.

Yes, the values for the compression are not good. But, again, if you can get the vehicle on the road and drive it for a few hundred miles, you might
find that things begin to improve with it. No guarantees, but, if it has been sitting for awhile, it needs a good run to get the rings to seat again and get all the carbon out of the cylinders.

I do believe that David managed to pull the oil pan, but it was very difficult to do. He had to raise the engine quite high to pull it off.

As for the probability of success in terms of replacing rings and bearings, I'll have to defer to someone who has attemped this and was successful. I don't have personal experience with such a task on the 603.
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