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Scuffed pistons?

nthach on Fri July 23, 2010 2:38 PM User is offline

Year: 1991
Make: Lexus
Model: LS400

I got my compressor apart for resealing, and while it's in good shape and there's no junk in the oil I drained out, I saw a few small scrapes in the black piston coating on one of the pistons. Does this mean my compressor is toast? The weird part is that there isn't any debris in the flush solvents used to clean out the lines/hoses and the condenser/evaporator as well as the compressor's lube oil.

94RX-7 on Sat July 24, 2010 1:48 PM User is offline

If it were mine, and I was planning on keeping the car forever, I'd just get a *NEW* unit from Denso and be done with it.

nthach on Sat July 24, 2010 2:38 PM User is offline

I'm keeping the car for a few more years. I'm just to reseal the thing and cross my fingers that the compressor doesn't kick the bucket. The funny part is the compressor was installed at a Lexus dealer by the PO. It was reman'd by Denso, too. I wish I could stick an Sanden into this car.

Chick on Sat July 24, 2010 11:01 PM User is offlineView users profile

Maybe when it was changed there wasn't enough oil in the system, a leak would slow the migration of oil back to the compressor..if the pressures were good, use it.. If not, replace has quality new and reman compressors for that car, e-mail them and see what they offer.... I used an offshore Denso from and it worked flawlessly in my daughters complaints.. mail

Email: Chick


Freedoms just another word for nothing left to lose

nthach on Sun July 25, 2010 2:13 AM User is offline

The system was running good - but it was leaking refrigerant. I tracked it down to the compressor seals and 3 hoses Lexus wants a small mortgage on - I had a local tube/hose/hydraulics shop rebuild the hoses with Goodyear Galaxy barrier hose and Parker fittings.

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