Nissan 370Z Forum - View Single Post

TedB370z · 03-04-2014, 02:58 PM

Update:

I pressure tested the intakes/plenum and found a leak, it was the passenger side breather that goes to the valve cover (I have K&N Typhoon Intakes) Needed some thread seal tape. Also looked at other K&N installs, and the previous owner left on the baffles/sound dampeners, which after reading the installation instructions I downloaded, K&N says to remove, so those are gone, ordered the z1 motorsports replacements.

Changed the oil with Mobil 1 Synthetic 5w30 (I was using conventional 5w30 the last 2 oil changes since I got the Z) and the violent valve/chain/whatever noise now rarely happens, as does the slight hesitation related to it. I'm wondering if the hydraulic chain tensioner was stuck from the thicker oil, causing the chain to slack and the timing go goofy?

I still have the odd issue of when I'm accelerating at a normal pace (not WOT) it'll just drop RPMs like before, but not as drastic as before I fixed the intake leak, only 200 - 300RPM.

03-04-2014, 02:58 PM	#34 (permalink)
TedB370z Base Member Join Date: Aug 2013 Location: Pittsburgh, PA Posts: 87 Drives: 09 Nissan 370z Rep Power: 12	Update: I pressure tested the intakes/plenum and found a leak, it was the passenger side breather that goes to the valve cover (I have K&N Typhoon Intakes) Needed some thread seal tape. Also looked at other K&N installs, and the previous owner left on the baffles/sound dampeners, which after reading the installation instructions I downloaded, K&N says to remove, so those are gone, ordered the z1 motorsports replacements. Changed the oil with Mobil 1 Synthetic 5w30 (I was using conventional 5w30 the last 2 oil changes since I got the Z) and the violent valve/chain/whatever noise now rarely happens, as does the slight hesitation related to it. I'm wondering if the hydraulic chain tensioner was stuck from the thicker oil, causing the chain to slack and the timing go goofy? I still have the odd issue of when I'm accelerating at a normal pace (not WOT) it'll just drop RPMs like before, but not as drastic as before I fixed the intake leak, only 200 - 300RPM.