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AWD - 2001 XC70 PCV issue

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2001 XC70 PCV issue V70-XC70

Hello all,

Just bought a 2001 XC70 with 110K on it as well as a parts car - same year - for under $1000. I know that this vintage and model has some issues (transmission, AWD & ECM) but I took the chance.
The "only" problem with the car was it is leaking engine oil - supposedly caused by bad PCV system. I have changed that before on my 850, so no big deal I thought. I am beginning suspect that the PCV is not the only cause of the oil leaks. I can see it has definitely been worked on but maybe not properly. I will replace the PCV components but - looking at a FCP video - they say that you should be able to blow compressed air into the bottom port in the engine block and feel pressure coming out of the oil filler neck. I am not feeling the air coming out there, and they then say that I may have to remove the crankcase. I have no problem doing that, but what am I looking for here? Do any of you have experience with this part of the PCV system? What should I look for?
Thanks





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2001 XC70 PCV issue V70-XC70

Removing the crankcase is a problem! Did you try the glove test first? Usually, the port to the crankcase is clogged where you can see the crud, The port makes a 90 degree bend down to the bottom of the crankcase and you can check that with a bent coat hanger.

The PTC nipple may be clogged. On Matthew's Volvo site, they suggest a larger hose to the air intake.

Where is the oil leaking?
--
Keeping it running is better than buying new





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2001 XC70 PCV issue V70-XC70

Hello Klaus, thanks for your reply.

Too late, I already removed the crankcase - just wanted peace of mind, and the two PCV passages are now clear for sure and I can get to clean everything properly.

Concerning where the oil is leaking from, I am not sure. As I am taking everything apart to do the PCV job (as well as timing belt, water pumps etc) I see oil everywhere - the whole engine compartment is soaked. Even on top of the engine where the coil packs are there is a fair amount of oil. I removed all of them and even a few of the spark plug wells were full of oil. I have removed the coils and the plugs and cleaned everything up as well as possible. I believe all this oil came from a leaking oil filler cap.The previous owner had drilled a hole in the cap and put a hose into it that he then had run to the air pipe. I will of course replace the cap and see if that helps when I get it started again.

Any suggestions and input is welcome

Sincerely

Henrik





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2001 XC70 PCV issue V70-XC70

>the whole engine compartment is soaked
Any chance camshaft oil seals were blown out?

And for future reference, I haven't seen the FCP video, but if you have removed the breather box and then blow in the bottom drain port, I would think that the air would come out the upper port before coming out the filler unless you have blocked off the former. But you should hear the air bubbling through the oil if the drain port is open.
--
-- '96 850T at about 230K, 2005 XC70 at 96K; gone but not forgotten '97 850T5, '83 244 DL, '81 245 and '64 Amazon





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2001 XC70 PCV issue


Thanks for your input,

I ended up taking off the crankcase and blowing the passages out - so
everything should be good now. I have put the crankcase back on but I still
am waiting for the PCV parts.

Henrik






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