hi mr.scottykilmer i have question about my 2003 nissan maxima.
it shows p0300 code and oil light blinking when slowing down and it shutoff.and the engine vibrating.
i replace the intake manifold gasket,i replace oil and oil filter,i replace the oil sending unit,dont know whats more problem,thank you in advance
Mileage?
201000 miles
Did you happen to check how low the oil was prior to changing the oil and filter? If it was ran that low it’s possible it could have jumped time causing your concern. Those are oil pressure controlled chain tensioners and when low they can be soft and possible guides can brake
i check the oil it wasnt low,but i run wrong oil viscosity before and then changing it back.,
so how i gonna start fixing this? is it oil pump ? or vacuum leak? is it timing chain? please help me.
Does the car have a loud rattle on cold start after it’s been sitting like over night or any extended period of time. If so I would start by removing the timing cover and replacement of the primary guide and resetting of base timing of the primary chain when doing so to start with
it shows p0300 code and oil light blinking and after 10 sec shut off
But when it starts is there a loud rattle from under the hood?
Nope.i start and rpm at 1100 and nothing wrong.and when the rpm goes down thats when the rattle start.
If there is a rattle noise at lower rpm it could be the timing chain or it could be low oil pressure you will need to have oil pressure checked with a gauge