Clairvoyant

For anyone that stumbles upon this in the future: The issue was a worn out valve cover gasket. Replaced that and it's been fine ever since. Make sure you get the gasket and the silicone gasket maker for the corners. Also, as davey_83 said, make sure the dipstick is all the way in.

Hello fellow Z-ers, I took the car for it's first MOT since I've had it and it passed on everything except for emissions. It registered a CO of 0.44% (max allowed is 0.2%) Here are some more details: - DE engine - Cobra HFCs (unknown installation date) - I added Cataclean before the test and drove it for 40 mins - The car had 97 or 99ron only over the last year - It first recorded CO 0.72%, but after holding it at 3k rpm for 15-20 mins, it went down to 0.44 and wouldn't go any lower. The garage said I need new cats. I've asked around and someone suggested new spark plugs and air filter. So, my questions are: - are spark plugs and air filter going to make up for the difference to make it compliant? I don't know when they were last changed. - are new cats the only way to go? From searching on the forum, even new HFCs seem to be hit and miss. - has anyone had any experience with the ISR Performance HFCs. They are the only ones I could find that are 300 cell. https://www.tarmacsportz.co.uk/isr-performance-nissan-350z-vq35de-03-06-high-flow-cat.html Thanks

Hi Mr V6, It's the oil dye that makes it look green. My coolant is red. Thanks for the reply

Hi Davey, Yes, the dipstick is all the way in. I did find quite a bit of fresh oil underneath it though. Nothing on top and nothing seen while running the engine. There are quite a few electrical plugs around. Isn't it dangerous to fire a jetwash spray in the engine bay?

Hi all, I'm new here so hello everyone 😊. I bought a 350Z not too long ago and I found out it's leaking engine oil. I am at a complete loss. I am hoping you guys and gals can help me. For reference the oil leak is 0.5litres every 1-3 hours of driving (a few dozen miles) Here are some details in chronological order: - At first I thought that the leak was coming from the back of the engine. - I put in oil dye, drove around a bit and couldn't find much, until I found a patch of fresh dyed oil from the back right corner (looking at it from the front) right underneath the valve cover. - I changed the valve cover gasket on that side, added RTV to the front only as per FSM. I checked the spark plug cylinders and they looked clean. All ignition coils were dry. - Oil leak still present. - I struggled a bit but managed to get a pretty good look at the back of the engine from above and it's all dry; nothing on the top of the transmission at all. - I put the front on jackstands today and looked from underneath. Everything on the right side was drenched in oil, from the roll bar up front to the brace in the back. This included, AC compressor steering rack, AC pipes, coolant pipes, exhaust manifold (lower part), starter motor (absolutely drenched), subframe... the whole lot. - I cleaned off as much as I could then ran the engine for a few minutes (with the front still up in the air) and a few drops appeared. - Looking up from where the drops were, I could see the sky (open bonnet).... so I looked from above and it was still a pretty straight shot from the sky lol. The closest thing was the exhaust manifold shroud which appeared to be wet, but couldn't verify (hot surface). - I was afraid it would be the rear main seal but I don't think it is as it's not coming from the back. Attached are some pics I took from underneath, please note that the pics are in reverse chronological order. All taken today. Any help or suggestions are much appreciated. I'm at a loss. P.S: I can't drench the whole engine in brake cleaner as I'm working just off the street, unless you can advise on how to prevent leakage.