Question about 1990 Nissan 300ZX
Turbocharger waste gate actuator either sticking or faulty spray some WD 40 ON WASTEGATE ACTUATOR LINKAGE FREE IT UP COULD BE STICKING ALSO MAKE SURE WASTEGATE ACTUATOR GETTING VACUUM AND CHECK CONDITION OF VACUUM HOSE TO WASTEGATE ACTUATOR.IF ALL IS GOOD TURBOCHARGER COULD BE BAD ALSO MAKE SURE YOU DONT HAVE RESTRICTED EXHAUST SYSTEM PLUGGED MUFFLER OR PLUGGED CATALYTIC CONVERTER..
Posted on Feb 18, 2012
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Posted on Jan 02, 2017
If you look at the front of the alternator, behind the belt, you'll see a curving grooved metal track - that's the adjuster track for the alternator. There's a bolt going through the groove into the alternator, which holds the alternator in place. You need to loosen that. I believe it's a 14mm bolt. You may also need to loosen a couple of the 12mm bolts that mount either the bracket or the alternator, to allow it to move. You'll probably find that it's easier to cut the old belt off (so it's out of the way) and then do the bolt work with a little more room to spare. Belt changes are always a pain on these cars - stick with it even if it takes awhile. If that doesn't get the alternator loose, loosen or remove other bolts on the alternator mount or on the track mount, and it will move eventually - not much, but it'll move. You may find that you can partially seat the belt on the alternator pulley, but can't get the belt fully onto the pulley. If that's the case, get it as far on as you can, and then put a 27mm socket on a long breaker bar, put the socket on the crank pulley bolt, and with the car in neutral, rotate the crank pulley by hand. This will pull the belt onto the alternator pulley.
Posted on Sep 30, 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
at idle ,if the tps is adjustable,with slotted screw mount holes,,while at idle move tps(with screws loose )untill idle sounds about right ,then tighten ,with out rpm meter hard to adjust just right ,but not crittical
Posted on Jul 04, 2009
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