Question about 1986 Nissan 300ZX
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Posted on Jan 02, 2017
SOURCE: 1990 300ZX NON-TURBO
Join up on www.twinturbo.net, and use the Tech area - there is a section that has the entire Nissan 300ZX microfiche scanned in and made searchable.
Posted on Sep 04, 2008
Old post but I would like to state that white smoke and white vapor are two different thing and blue smoke is sometimes so ligh it looks white but does act like heavy smoke. Evanescence of water vapor looks a lot like smoke but dissipates a lot quicker but in mass quantities can look like smoke (yes..I been dying to use that word ever since I heard of the band Evanescence lol). Transmission fluid can be sucked into the engine via a bad shift modulator both that has no bearing here (just FYI). In either case you would be fouling out spark plugs due to oil or water saturation and causing unburned fuel to be expelled.
Posted on Feb 17, 2009
SOURCE: timing on a 1991 nissan 300zx
There is no means of setting the timing if you are referring to a conventional timing light. The engine is designed with sensors that sense the angle of the camshafts in relationship to the crankshaft and whether it is on the intake or exhaust stroke on the #1 cylinder. This design is actually a little more complex than that because it has variable valve timing which means that the angle in which the camshafts open and close the valves, change with RPM's This give the engine the best of both worlds. It's like have an engine with cams designed for torque at low RPM and a set of cams designed for HP with a free breathing quick revving engine you would have on a race course. The ECM is constantly changing the timing and injector pulse width based on many sources of input, from, the O2 sensor, air flow, air temp, coolant temp, fuel pressure, RPM's and a host of other inputs.
SO>>>>>>>>>>>> in a manner of speaking, unless you are making reference to setting up the timing chain, everything else is under control by the ECM and related components.
Posted on Mar 25, 2009
This is a classic symptom of a bad mass airflow sensor. Nissan designed this as a protective feature on the car. If the mass air sensor goes bad, the computer limits the car to a 2400RPM rev limit to prevent damage.
The sensor is under the center nose panel between the headlights. Take that off and on the back of the airbox (which fills this space) you'll see a pipe coming out that meets at a "T" with another hose going across and down under the headlights. That pipe off the back of the airbox is the mass air sensor (it has a harness plugged in).
Posted on Mar 27, 2009
Are you sure the new belt didn't jump time? How was the belt tensioner when you replaced yhe belt? Did your water pump leak onto or into your crank sensor?Are you sure you have proper fuel pressure?When you replaced the timing belt, did you make sure to find top dead center on cylinder 1 ? Just lining up the timing marks may not have worked if this is indeed what you did.If you had the crankshaft rotated 180 degrees, your motor would be trying to fire on the exhaust stroke, instead of the compression stroke. To find T.D.C. disconnect your battery,rotate your crankshaft until the piston that is marked #1 in your firing order is at the top of its stroke, this can be accomplished by carefully inserting a wooden or plastic dowel into the sparkplug hole of cylinder#1. The dowel will rise with the piston and at the point where it starts to fall will be T.D.C. Now your timing marks should line up,and you will then be on the compression stroke. good luck! hope this helps
Posted on Feb 14, 2010
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