2002 volvo s60 2.4t PCV still blocked after service/replacement

[- Pete -]

Thank you! Don’t you just love that filler cap/funnel? I can’t get over how much I enjoy what it offers.

That is exactly what I will do with mine, thanks again.

[cfelberg]

Yes, they are pretty convenient! I added a little duct tape to the end of the hose that fits into the cap to make the fit just right.

[- Pete -]

Just an update on this for informational purposes - I replaced the banjo bolt under the intake manifold with the udated one that has a check valve and it did lower the crankcase pressure. I was getting readings of -.05 Kpa at idle and up to 1.9 Kpa when under boost driving with the old banjo bolt. After replacing the banjo bolt I was reading -.25 Kpa at idle and .9 Kpa at boost when driving.

Chad, if I could thank you again, I would! I just did this today & my results paralleled yours. My PSI readings at the oil filler neck were effectively cut in half under boost.

........ I find it hard to believe (not in a doubting manner to the OP!) that adding a banjo bolt with the check valve reduced crankcase PSI by half.

This is me eating my words.

I used the filler cap. I ported a tube through the filler cap used with the volvo style funnel and cap combo as it conveniently has a hole already in it. I took readings initially from both the filler cap and dip stick tube and they were both the same.

This exact setup is how I did my test today. I am now thoroughly convinced that the updated banjo bolt does make a significant difference in valve cover PSI buildup. This is really important!
I took a before and after video of a digital manometer & will try to post it. My reading approximations, measured at oil filler, are below:

Old Banjo:

• Engine hot, idle @ 69.2*F ambient ~ -0.089 psi

• Engine hot, 2k rpms in 2nd gear 0mph ~ +0.085-0.1__ psi

Updated Banjo:

• Engine hot, idle @ 70*F ambient ~ -0.037 psi

• Engine hot, 2k rpms in 2nd gear 0mph ~ +0.039-0.047 psi

Another thing I noticed after installing the updated banjo bolt was that throttle response and power over the usable RPM range seemed noticeably stronger. I did do a ECM reset via battery leads zip tied together while doing aforementioned lumbar disc herniating/rupturing labor. Also my "large evap leak" code hasn't resurfaced.

[vtl]

Reading vacuum at oil filler may be not very accurate because of moving camshaft lobe that creates a lot of disturbance. See in video how the gloves is soaked in, but the central part is raising under the boost. It is moved by the air pressure waves.



I also drilled a wider hole in PTC valve to have a better vacuum under the boost.

[cfelberg]

Pete, glad it worked for you!