GraingeZed Posted June 4, 2017 Share Posted June 4, 2017 Hey. I could do with a bit of advice guys. I've had my 53 plate Zed for 3 weeks now and have loved every minute of it but today after doing about a 100 mile trip with a friend I noticed the oil pressure gauge was quite low. When we were in traffic on the m25 going quite slow the needle was at about 15 psi and then once the traffic had cleared and I was sitting at about 70-75 mph the needle was about 30psi. Up until today every time I drove it it would sit about half way at 60 psi. Any advice on what to do next would be much appreciated! I'm thinking I should do a oil and filter change next week. What about changing the oil pressure sending unit as well? Also,after getting home and letting the car sit for a few hours,I checked the oil level and everything seems alright with that,if anything the oil was quite dark. Like I say,any advice would be much appreciated. Thanks,Simon. Quote Link to comment Share on other sites More sharing options...
Ekona Posted June 4, 2017 Share Posted June 4, 2017 Sounds fine to me. As long as it's somewhere between zero and max then nothing really to worry about. Quote Link to comment Share on other sites More sharing options...
GraingeZed Posted June 4, 2017 Author Share Posted June 4, 2017 Yeah? That is quite relieving. It's only worried me because like I said it's sat at half way on 60 psi every time I've driven it until today when it's dropped quite a lot. Thanks for that though. Quote Link to comment Share on other sites More sharing options...
Ekona Posted June 4, 2017 Share Posted June 4, 2017 As long as the level is fine then that's the main thing really, very very rare for these cars to have an oil pump failure or other major pressure problem Quote Link to comment Share on other sites More sharing options...
GraingeZed Posted June 4, 2017 Author Share Posted June 4, 2017 Alright mate thanks for that. Much appreciated and worry over! 1 Quote Link to comment Share on other sites More sharing options...
WhopperSenior Posted June 5, 2017 Share Posted June 5, 2017 There is an known low pressure issue related to the oil gallery gasket giving up. http://www.350z-uk.com/topic/108292-oil-gallery-gasket-repair-350z-hr-and-370z/ That said, this seems to show as lower than 15 psi when it goes wrong. My feeling is that you're still fine but worth bearing in mind if it starts to drop a fair amount lower. 1 Quote Link to comment Share on other sites More sharing options...
MDMetal Posted June 5, 2017 Share Posted June 5, 2017 Sounds fine, I had an issue with a leak where the pressure would drop over 3-4 months but as long as I filled it up all was well. Hopefully fixed it now! Keep an eye on the level otherwise sounds good. 1 Quote Link to comment Share on other sites More sharing options...
GraingeZed Posted June 5, 2017 Author Share Posted June 5, 2017 (edited) Hey thanks for that,I had a quick read of the link you sent and noticed that it was referring to the later model and the 370z. Would it still be the same case with my DE early 350z? Edited June 5, 2017 by GraingeZed Quote Link to comment Share on other sites More sharing options...
Ekona Posted June 5, 2017 Share Posted June 5, 2017 It's not, no. 1 Quote Link to comment Share on other sites More sharing options...
davey_83 Posted June 5, 2017 Share Posted June 5, 2017 (edited) Just be sure to keep an eye on the oil level and top up as needed, as low oil has a direct affect on oil pressure. Edited June 5, 2017 by davey_83 1 Quote Link to comment Share on other sites More sharing options...
Jay84 Posted June 5, 2017 Share Posted June 5, 2017 The gallery gaskets tends to affect early 370's and 350 HR's. As above, keep and eye on levels. Out of interest, did it go back to how you're used to it being once cool, ie next day? Quote Link to comment Share on other sites More sharing options...
Willsy1980 Posted June 5, 2017 Share Posted June 5, 2017 (edited) I thought 15 psi was normal for the DE when warmed up and ticking over ? 30-45 psi when pootling around 45-60 psi motorway speeds in 5th/6th 90psi when revving to about 5k+ If not, now im worried Edited June 5, 2017 by Willsy1980 Quote Link to comment Share on other sites More sharing options...
MDMetal Posted June 5, 2017 Share Posted June 5, 2017 I thought 15 psi was normal for the DE when warmed up and ticking over ? 30-45 psi when pootling around 45-60 psi motorway speeds in 5th/6th 90psi when revving to about 5k+ If not, now im worried Thats what mine usually does 2 Quote Link to comment Share on other sites More sharing options...
Ekona Posted June 5, 2017 Share Posted June 5, 2017 If it's between zero and max and the level is where it should be, it's fine. 1 Quote Link to comment Share on other sites More sharing options...
GraingeZed Posted June 5, 2017 Author Share Posted June 5, 2017 The gallery gaskets tends to affect early 370's and 350 HR's. As above, keep and eye on levels. Out of interest, did it go back to how you're used to it being once cool, ie next day? well ive not started the car up today as of yet. Once im back from work im going to check the oil level again and start her up and see what the pressure does. When i checked it yesterday after a few hours the pressure was still pretty low. Quote Link to comment Share on other sites More sharing options...
Willsy1980 Posted June 5, 2017 Share Posted June 5, 2017 The gallery gaskets tends to affect early 370's and 350 HR's. As above, keep and eye on levels. Out of interest, did it go back to how you're used to it being once cool, ie next day? well ive not started the car up today as of yet. Once im back from work im going to check the oil level again and start her up and see what the pressure does. When i checked it yesterday after a few hours the pressure was still pretty low. For peace of mind and £60-70 may as well just do an oil change and filter, can't do any harm 1 Quote Link to comment Share on other sites More sharing options...
The Trouser Posted June 5, 2017 Share Posted June 5, 2017 (edited) The gallery gaskets tends to affect early 370's and 350 HR's. Define 'early' please - as I may or may not have to worry? Edited June 5, 2017 by The Trouser Quote Link to comment Share on other sites More sharing options...
GraingeZed Posted June 5, 2017 Author Share Posted June 5, 2017 (edited) I ended up topping the oil up tonight. Seems to have sorted the pressure as well. The dipsticks on these things are ridiculous!! Edited June 5, 2017 by GraingeZed 1 Quote Link to comment Share on other sites More sharing options...
Dicky Posted June 8, 2017 Share Posted June 8, 2017 That sounds LOW to me. My car's an 04 and and I'm pretty sure at low speeds the gauge reads about 30 while at higher speeds it reads around 60, I'll double check. Be aware of the useless dip stick. I find I have to take several dips before I'm sure the oil level is ok. The dip stick seems to get smeared and it's difficult to tell on one reading. I'ts my belief that you could be fooled into believing your level is ok when it's in fact low!! 1 Quote Link to comment Share on other sites More sharing options...
Olly350z Posted June 8, 2017 Share Posted June 8, 2017 Id be inclined to agree with Dicky, when warm and pootling around town my guage indicates 30psi, and sat at 70mph in 6th (2500rpm) its around 50-55psi. On a hot idle it'll sit around the 20 mark. It has been said though that the oil guage is more a paranoia guage, with often inaccurate readings. If you want peace of mind, take it to a garage and get them to plug a independent pressure guage directly for a true reading. This will tell you straight away whether you can relax or worry Do be careful with the dipsticks, theyre a real pain in the ass to check. I check mine every single time before a long drive. But then Im an ex Honda owner so high consumption is something im acutely aware of 1 Quote Link to comment Share on other sites More sharing options...
Richf Posted June 8, 2017 Share Posted June 8, 2017 what he said^ Oil gauges cant be trusted really the sensors are flaky on most Nissans get it checked with a separate gauge if you are worried but Nissan state 14psi at hot idle 2 Quote Link to comment Share on other sites More sharing options...
Olly350z Posted June 8, 2017 Share Posted June 8, 2017 You could always take the sensor out and clean it with brake cleaner as in theory it could get gunked up, but id issue a strong word of warning. In the states it appears that this area of the block is a weak point, with people cracking the block when undoing or redoing it up. You could purchase a new sensor from Nissan which is circa £90, but it still might not answer your worries! 1 Quote Link to comment Share on other sites More sharing options...
GraingeZed Posted June 8, 2017 Author Share Posted June 8, 2017 (edited) Thanks for the advice guys! Much appreciated! I checked my oil a whole load of times and got different readings. I ended up putting a fair bit of oil in and it seems alright now. The pressure seems good and the oil level seems good as well. I've got a new sensor on order and once it arrives I'll be doing a service,at least then I'll know how much oil is in there. Edited June 8, 2017 by GraingeZed Quote Link to comment Share on other sites More sharing options...
davey_83 Posted June 8, 2017 Share Posted June 8, 2017 (edited) My warm idle readings, DE engine with new genuine sensor cicra 6/7k ago. Edited June 8, 2017 by davey_83 2 Quote Link to comment Share on other sites More sharing options...
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