Engine Oil Leaking Problems of Infiniti G35

I had a low oil light and decided to change the oil and spark plugs. When I removed the spark plug I found oil pooling in the spark plug tube and saw an obvious leak in the valve cover seal. The oil level had reached 1cm above the connector in the boot. This can potentially cause an engine fire while driving. The valve covers contain bad spark plug tube seals. This allows a significant amount of oil to pool in the spark plug tube. When the oil reaches the spark plug boot it can ignite and cause engine fires at high speed.

See all problems of the 2004 Infiniti G35 🔎.

Car would die after being started. Lag time in accleration. Upon inspection we were told the rear timing cover has a seal inside of it that is broken. The mechanics showed us 4 vehicles in their shop with the same issue. The seal inside this cover is so hard to reach the entire engine must be dropped in order to fix this. It is a $3k+ job. The mechanics advised that until Nissan fixes the quality of this seal it will blow again in 80k. The seal is creating oil leaks into my engine and will eventually lock up the transmission. We were advise there may be a service bulletin on this issue, and a 100,000k extention on the powertrain is in the works. We cannot confirm this yet, as we are waiting for Infiniti to respond. We have always kept up with the suggested maintenance on this vehicle with regular oil changes. We are extremly displeased with the fact that this is an issue that Infiniti is aware of but hasn't fixed yet. We can also confirm that the passenger seat (front) shows that I am not sitting in the car and the airbags turnoff. This fluctuates given the temp outside. We believe this may be an electrical issue.

See all problems of the 2007 Infiniti G35 🔎.

I own a 6-speed manual transmission and the car is consuming a tremendous amount of engine oil. I am pouring two quarts of oil in it every 3 - 4 days. At this point, the oil is leaking into the combustion chamber producing white fumes out the tailpipe. I reached out to Infiniti?s consumer affairs department with the issue and they advised me to take the car in to an authorized Infiniti service center for evaluation. I then took the car to an Infiniti service center and told the service rep my car complaint. His immediate response was that the manual transmissions do consume a lot of oil. After the car's evaluation, the service rep told me that the entire engine block would need to be replaced because of damaged or worn piston rings. I asked the service rep what could cause a sophisticated, expensive machine to require a motor replacement after only 126k miles. The service rep replied that it could be due to infrequent oil changes and/or driving the car for long periods without oil both of which do not apply to me. I then reached out to the Infiniti consumer affairs department for some resolution to what I would consider a travesty and was told that there was absolutely nothing that they could do to assist me in this matter citing two reasons - (1) not being a loyal customer of Infiniti because my last service visit was in 2009 and (2) the vehicle is way outside the manufacturer's warranty. I then did some research online to see if I was the only person with this car that was experiencing the same problem. I found numerous postings, most of which claim that Nissan is fully aware of the issue, but they are taking no responsibility for the issue.

See all problems of the 2003 Infiniti G35 🔎.

Today, I found 2003 Infiniti G35 sedan leak oil into spark plug hole. Oil leak into the spark hole would cause engine fire with high voltage from ignition coils. I also found this issue was not limited to my vehicle but most of Infiniti/Nissan vehicles had this problem. I believe Nissan already has known this issue. I hope NHTSA would do something for all of Nissan/Infiniti vehicle owners.