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My XC70, 146,000 miles, has started minor smoking and using oil between changes. Are there oil seals that need replacing?
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2010 XC90R, XC70.
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had to replace a PVC box and found my brake master need to be replaced and a tailpipe hanger. $1700.
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Leon Ramseur
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The brake master cylinder was faulty? What was the diagnosis?
Check the paper work and see if they 'replaced' the PTC nipple when they replaced the oil breather box.
If you don't use synthetic oil, start now. And none of the dealer's 'semi' synthetic cheap stuff.
The exhaust hangers do rust, but that should have been a reasonable part.
You need to learn how to do some of your own work. The PVC parts are around $200.
Klaus
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1967 220 belonging to C.A. lives on
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Klaus,
It now has 205K, Still smoking some after long idle. After I get on it hard, it stops smoking. Any ideas?
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Leon Ramseur, 2002 XC70, 2000 MB CL430.
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If you've already had a PCV service done, my money is on bad valve seals. Your symptoms are classic, especially if the PCV system is clean.
Valve seal replacement is not really a job for the novice. But it can be a great learning experience if you have the time and patience to do it right.
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Car needs turbo seals. It is leaking oil into intercooler and makes the car smoke when it gets into the turbo.
$3500 to fix, I think it I will live with it for a while. The repair costs more than the car is worth. Any thoughts about my situation?
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Leon Ramseur, 2002 XC70, 2000 MB Cl430.
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All turbos will need seals. Most of the time, the oil vaporizes in to the intercooler piping, condenses in the intercooler, and makes its way out of the weep hole in the bottom of the intercooler. Eventually, a spot of oil will appear on your driveway on the driver's side.
But, normally, turbos on the 850/70 cars will only leak oil during turbo usage, like getting on the throttle hard. Replacing the seal on the turbo is not an involved process, trucking outfits do it all of the time. Remove turbo, replace seal, reinstall turbo.
Take a look at this thread: http://www.volvoforums.org.uk/showthread.php?t=48611
Have you replaced your PCV system yet? Cleaned out the PTC? If not, get an old latex glove, secure it to the oil filler pipe, and start the engine. If the glove inflates, that could be your real oil usage problem.
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Keeping it running is better than buying new
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The PCV system was fixed. I tried the latex glove test. It did not inflate the glove. If I get the turbo seals fixed, probably about $1000, what else will probably need fixing? The car is only worth about $1000 per KBB.
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Leon Ramseur, 2002 XC70, 2000 MB Cl430.
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"It now has 205K, Still smoking some after long idle. After I get on it hard, it stops smoking. Any ideas?"
Your response above, is a classic symptom of valve stem seals leaking. The glued down portion of the head needs to be removed for this exercise. You have 30 valves or 30 valve seals! Not a fun job, nor is it easy. Removing the cam cover means the cams come out, also a good time to replace the cam seals.
Most owners ignore this problem. It does not mean the engine is dying, it just smokes at idle and long down hill drives. It is the vacuum that draws the oil vapors into the intake where it is burned, causing smoke.
Due to the age of the car, and its value, it probably isn't worth the expense for a professional mechanic to repair. It doesn't consume much oil in the process, but it is worth checking the level when you tank up.
Suggestion, never let the engine 'warm up' for more than 30 seconds even in the winter. Avoid long periods of idling whenever you can.
It is NOT the turbo.
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Keeping it running is better than buying new
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A lot of us DIY guys have latex gloves to keep the car clean :) These gloves have another purpose before discarding:
Remove the oil filler cap, wrap a glove over the filler hole (might need a rubber band), and start the car. If the glove inflates, you have positive pressure in the crankcase which is not good. The PCV service you had done should have fixed that.
Of course, with 200K miles, you might have worn valve seals that allow oil into the cylinders and produce smoke. This is not a big concern, but it is a costly fix. Stop idling for a long time and avoid long downhill drives.
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Keeping it running is better than buying new
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There was a hissing noise behind the dash and the booster was leaking. It doesn'r say anything about a nipple. They replaced the PCV box and seals, cleaned passages, throttle unit and reset adapters. The exhaust hanger was $62.
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2010 XC90R, XC70, 1993 945.
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If it smokes on decelleration, then it could be valve seals compounded with a PVC system that is clogged.
If it smokes on accelleration, it could be a turbo seal which is no big deal until it gets much worse.
You car is due for new PVC hoses and a cleaning of the PCT nipple.
Klaus
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Always willing to listen, just not able to take direction.
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How involed are the PVC hoses and cleaning the PCT? Should I take it to the dealer and have him check it all out? It smokes at idle and I haven't seen it smoke on deceleration. Klaus, thanks for the response.
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Leon Ramseur
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The dealer will not clean the PCT, he will only replace the air intake hose witth the PCT nipple already installed. Cleaning takes too long and makes no money.
They will charge a lot for replacing the oil separator and the vacuum lines. At least 3 hours of labor. If you do it, 5-8 hours (there is a learning curve). Parts are close to $150 at FCP Groton, more at your local dealer.
I would do the PCT nipple first. It is a pain getting the intake hose back on the turbo, just because it is hard to reach.
Klaus
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Always willing to listen, just not able to take direction.
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