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Old 01-01-2010, 06:52 PM
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layback40 layback40 is offline
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Join Date: Nov 2009
Location: Victoria Australia - down under!!
Posts: 4,023
An other 300D motor damaged by junk fuel!!
Blowby = ring problem.
There are plenty of threads on here about stuck rings from using junk fuel. No one on here has put there hand up to being able to have run junk fuel for say 200k miles with out damage to the motor. Years of damage from junk fuel will not be overcome by 2 tanks of proper fuel. Some have had a little success with soaking in Mystery OIL. Most likely your rings on piston 2 are jammed in the lands with varnish from the fuel. The others wont be far behind.
Mystery oil added to the cylinders and soaked for a couple of weeks may help. Other wise head & sump off eventually, pistons out & cleaned, new rings.
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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