I just recently bought an 03 nissan 350z with 104k miles, The check engine light is on and I hooked up an obd reader and it gave me a random misfire reading. I changed the spark plugs and checked the ignition coils and the car was still misfiring. It misfires at 4,000 rpm and higher so bad that Its almost like I am losing speed. Even worse in 4th and 5th gear. I changed the camshaft sensors because that was a code that came up as well. I changed both. I took the car to a shop and they said that It was my oil that was causing the misfire. They said that the oil was dirty and was "clogging" or blocking up the camshaft sensors due to the viscosity. So I changed the oil and its still misfiring.. My main questing aside from what's wrong is can a clogged crankshaft sensor cause power loss and missfire?

 

ibtl let the fun begin.!!!

 

I'm sorry for the problems but...the paint job..were you forced into buying this?

 

I hope he got one hell of a deal on it

 

I think the paint is your problem.

 

damn that sucks. good luck with repairs.

 

 

your car is refusing to work because of the paint job

 

If you've got engine sludge I doubt one oil change is going to work... Sounds like the moron who owned it before you never changed the oil

 

more pics of the girl?

 

the tard that owned the car before you should be slapped...

 

 

Was the car in an accident?

Is the repair finished?

 

try adding seafoam to the engine oil. run the car for 100 miles. change the oil.
also, run seafoam through the brake booster vacuum line and put some in the gas tank.

 

My thoughts exactly!

 

I tried the seafoam and still nothing. Should I try cleaning out the Camshaft sensors? Or is that a waste of time...

 

code?????DTC 0300 MULTIPLE MISSFIRE .0301 0302 ....... DID YOU RETRIVE THE CODES FROM THE CAR?

 

The misfire code was 0300. Random Misfire Detected.

 

Did u test drive the car before u bought it? U had to get a great deal

 

Yea, I did. Drove all the way from Missouri to Virginia Beach to pick it up. I only payed $9550 for the car. Only aftermarket parts are a catback borla exhaust and a k&n short ram intake. I did notice a lack of power on the way back home.. but I didnt think nothing of it.. Seeing as how it's my first Z I didnt know what to expect.. but now it's becoming annoying and I dont' want to damage the motor.. if I haven't already