Hello, Each time I start my 2006 350z 6spd I have drivability issues untill it warms up. Its hard to explain. but in low gears, if I take my rpm up higher than 4k rpm it sort of hesitates, chokes or bogs down, then I hear a pop sound and the car lunges forward.Its almost as if there is oil that accumulates while driving and I need to "blow it out" then it drives fine. So I need to take it to redline once or twice in 2nd or 3rd gear to get all the crap out from when it was sitting for a few hours. Lets say I am in 5th gear and I go to accelerate at half throttle, it bogs down and pops, so I throw it in 3rd, floor it till it blows crap out then I can drive normally. THere is no CEL on, I have an aftermarket MAF, intake manifold + tune.
Additional notes, Nissan has asked me to replace my engine and pay $8k due to oil consumption. I go through a qt or two ever 500 miles or so. I do have a powertrain warranty but it wont be covered unless the dealership takes out my pistons, if the rings are broken I get a new engine, if not, I pay for everything. But I wasnt having this problem before when I first noticed my bad oil consumption.
JA: Does the light stay on, or does it blink?
Customer: there is no CEL
JA: Are you fixing your 350Z yourself? What have you tried so far?
Customer: No i dont know if i can fix this myself, I have tried using thicker oil such as the lucas oil stop leak. but I have a feeling its possible that i ahve some sort of oil blowby build up somewhere that isnt freed untill I blast my car to redline, then its fine.
JA: Anything else you want the mechanic to know before I connect you?
Customer: Last year I gave her a tune up and replaced my trans& dif oil, Dont think that has affected my problem, I performed this work a year before the problem arose. I havent checked my spark plugs