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Re: Tested and proven. ![]() Posted by SWEDECAR [Email] ![]() ![]() ![]() In Reply to: Tested and proven., Stephen Goldberger, Fri, 19 Jun 2009 05:37:42 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Even though the PCV update #6 (as we call it here) is a good thing, it has also gotten the reputation by some to cure everything from oil consumption to Athlete foot.
It's not that easy.
After installing it on many cars by now and monitoring PCV vacuum/pressure with my new hyper sensitive Volvo gauge (yes, Volvo have big PCV problems as well on their newer engines)I have found that it doesn't always cure all oil leaks or oil consumptions even though the vacuum reading is well within specs.
I also noticed how crucial the smaller vacuum hose with check valve installed is at idle. On all PCV #6 retrofitted engines I see a steady -0.7 Kpa vacuum but only pinching off or removing the small vacuum hose, the crank case vacuum goes up to +0.6 Kpa at idle.
One of the early rumors was that the PCV problems was due to low friction emission engines using very soft piston rings.
I believe that that is more of the problem and the different PCV updates has been an afterthought trying to fix it in a less costly way.
Some of the notorious oil leak and oil consumption engines that I have had a chance to re ring, have stopped leaking and burning oil all together.
Here are some readings I have collected so far on hot engines, idling and A/C off.
2001 9-3 B205R -0.7 Kpa W/O #6
2001 9-3 B205R -0.7 Kpa W/O #6
2001 9-3 B205R +0.2 Kpa W/O #6
2000 9-3 B205R -0.45 Kpa W #4
2000 9-3 B235R -0.65 Kpa W/O #6
1999 9-5 B235E -0.7 Kpa W #6
2002 9-5 B235E -0.7 Kpa W #6
2002 9-5 B235E -0.25 Kpa W/O #6
2002 9-5 B235E -0.65 Kpa W #6
2002 9-5 B235E -0.5 Kpa W/O #6 0.7 Kpa W#6
2002 9-5 B235E -0.7 Kpa W #6
2003 9-5 B235R -0.7 Kpa W #6
2002 9-5 B235R -0.45 Kpa W/O #6 -0.7 Kpa W #6
2004 9-5 B235E -0.7 Kpa
2004 9-5 B235L -0.7 Kpa
2004 9-5 B235R -0.7 Kpa
2005 9-5 B235L -0.7 Kpa
2005 9-3 B207L -0.35 Kpa
2007 9-3 B207R -0.7 Kpa
2005 9-3 B207L -0.65 Kpa
2006 9-3 B284L -0.7 Kpa
Anders
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