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Old 10-14-1999, 08:39 PM
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Join Date: Oct 1999
Posts: 4
I have an '89 260E with 182,000 miles. Burns about 1 qt per 500 miles. Good compression but a leakdown test showed that it's losing @ 70% compression in #6 cyl. Foe a while, replacing #6's fouled plugs periodically would let it run smoothly. Now that doesn't work.
I've been told that I probably have a cracked piston and need either a factory new or factory remanufactured engine at close to $6,000... apparently a short block is not available. Noone seems to want to consider opening it up and doing the necessary repairs.
I need a little guidance it worth having the work done...what are the pros/cons re factory new v reman? Short bock? Is repairing this engine rather than replacing it practical? What's a reasonable cost?
Overall the car is in good shape, but it has never had any transmission work...
Would I be better off looking for a '96 or '97 E320 and trading it in for whatever I can get???
Old 10-14-1999, 08:59 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
I have never seen this before. The 103 engine is likely burning oil due to a worn valve guide. Be sure to have a second opinion!!!!!! The valve job usually costs about 2,500 dollars U.S.

1981 280GE SWB
1987 16V

Old 10-14-1999, 09:28 PM
Posts: n/a
I agree, these engines very rarely have lower engine problems in less than 250,000 miles or more, The problem is almost certainly worn out valve guides, typical of 260/300e engines with more than 100000 miles.
JK, ASE Certified master MB technician
Old 10-15-1999, 11:12 AM
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Join Date: Aug 1999
Location: Cincinnati, Ohio
Posts: 1,935

I also "third" that. I would almost be positive that your problem is due to a worn valve guide. However, should your problem extend elsewhere, I would give Metric Motors a call. They are probably the best MB engine rebuilder. Pricey, but they do good work. If the rest of the car is in good shape and you would prefer to keep it, than by all means go for the rebuild. Figure a fresh engine is much cheaper than a new car!

Aaron Greenberg
MB technician
'67 250SE Cabriolet
'77 450SL
'79 6.9
'80 300SD
'85 380SE
'89 420SEL
'93 300E 2.8

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