san marino blue Posted May 19, 2015 Share Posted May 19, 2015 Hello, I am new to the 350z, but thought I'd share my experience of my low oil pressure HR engine. I bought the car an 07 roadster with 82k on the clock in San Marino blue The car was in above average condition for the mileage, but the oil pressure was reading low. I was assured by a few threads on forums including this one that the gauge was probably wrong, or an oil change would sort it out. It sounded great no rumbles, knocks, or squeals and no smoke. It went well too, in fact had it not been for the gauge, you'd swear it was fine. My gut feeling was to leave it there So I kicked the tyres, said I hated the colour, which I love, sucked air through my teeth and got the dealer to drop it 500quid, sold as seen A bargain at 6500 for an 07 313 roadster, which just needs an oil change... WRONG! On the way home CEL came on, but still running well so what the hell, ECU missed a reading, so what? Under tray came loose so had to tied up with fence wire But we got home Oil pressure readings were 15psi cold on tick over, 80psi revved 3psi hot tick over, 50psi revved The next few weeks I changed the oil and flushed it out with Wynnes engine cleaner No better Checked the cars gauge using a mechanical one It was reading right CEL was P0014, P0024, exhaust VVT, but could also be P0011, P0021inlet VVT Caused by the low oil pressure I dropped the sump to see if there was a blockage in the pick up This was clean, but I found a small piece of paper gasket I now spent a month on research and found this article It's quite long but worth the read http://g35driver.com/forums/g35-sedan-v36-2007-08/436179-cause-dreaded-p0011-p0021-codes-everyone-curious-about.html If this sounds like your Zed, then this thread explains it all, part nos the lot If your Zed suddenly lost oil pressure, it can The new gasket is reinforced so hopefully that's the last time I have to do it Check the gauge and change the oil and filter first However if you've changed from 6th to 1st at 120mph, your Zed is smoking, rattling, you ran it out of oil or making unnatural noises, I am sorry, it's probably way more serious This is a big job all the ancillaries the rad and the timing cover must come off, but it's an engine in job and I did it on the drive in Dec!! It's not a hard job, but two days work if you've not done it before The bits cost bugger all, about 100quid with oil and filter My crank bolt was a nightmare I now have 28psi hot tick over 100 revved 110psi cold tick over, don't rev it cold No CEL, but this took 100miles of hard driving before it cleared I now love my Zed, it was eventually a bargain and I hope this helps someone else Don't ignore it these things make big oil pressure for a reason Thrown rods aren't repairable! 2 Quote Link to comment Share on other sites More sharing options...
GMballistic Posted May 19, 2015 Share Posted May 19, 2015 Good bit of info for the HR owners. Quote Link to comment Share on other sites More sharing options...
Mark@Abbey m/s Posted May 19, 2015 Share Posted May 19, 2015 Paper gaskets on the rear cam cover? Quote Link to comment Share on other sites More sharing options...
san marino blue Posted May 19, 2015 Author Share Posted May 19, 2015 Yeah Those are the ones Loads of work, or two little bits of paper! Quote Link to comment Share on other sites More sharing options...
Richf Posted May 19, 2015 Share Posted May 19, 2015 Going to be an increasingly common fault I think Useful post ! Quote Link to comment Share on other sites More sharing options...
Roscoe Posted May 19, 2015 Share Posted May 19, 2015 Now the HR owners are beginning to see this with increased mileage. Mine went at 70k. New gaskets in and all is good again! Quote Link to comment Share on other sites More sharing options...
Roscoe Posted May 19, 2015 Share Posted May 19, 2015 Nissan are aware of this issue as they brought out a revised gasket but when asked about this they deny all knowledge..... 1 Quote Link to comment Share on other sites More sharing options...
san marino blue Posted May 20, 2015 Author Share Posted May 20, 2015 I agree, Nissan denying there is a problem when clearly there is, seems to be their attitude to most things. It took me ages to find this, as it's not something you'd normally expect to look for. God only knows what a main dealer would charge for the job Quote Link to comment Share on other sites More sharing options...
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