20 Most Recent 1990 Nissan 300ZX - Page 5 Questions & Answers

check to see if electric getting to motor if so motor goosed but also cheak relays and window buttons

if the electric is getting to motor by using a volt meter the motor is goosed but could also be a relay or a switch get all cheap stuff checked first before pulling out for a motor

Hi there, First I need to know when you insert the key and try to start did it crank? Did all the light on the dashboard lit up like check engine, abs oil battery ect... ?? If so is the Secrity light blink? How long do you have the car? Did it ever do it befor ? I need to know more about you car.

HI Star69it not a head gasket it is more likely in tack manifold gasket

Could be a damaged spot on the flywheel or a problem with the bendix gear on the starter. The bendix gear engages with the teeth on the flywheel.

Put it in 1 from the colum and about 15mph put it into 2 and then drive or over drive and see if that works it might be tranny problems i think its called torque conveter
Or try gas let go gas let go gas and see if yhou can feel it my altima had that issue came out to be SHIFT CYLINOED

I picked a 1990 model non-turbo to examine.It looks like the switch is threaded with a lock nut, you should be able to unplug the switch and turn it to where the switch makes contact with the pedal then use the locknut to hold it.

get a can of starter fluil crank car and spray around intake ...may have a vaccume leak ..if so this will tell you...the engine will speed up if leaking,..

Try this. Burn off your current take of gas, get it down to a quarter tank or so. Fill up with premium gas. If the noise goes away it is probaly a condition known as ping. Which is the predestination of the air fuel mixture in the combustion chamber. This can be caused by carbon buildup and could be resolved with an upper intake and valve cleaning. If the noise persists it is most likely a mechanical engine noise, an experienced ear will be able to tell you what the noise is. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

If the battery is charged and the cables are clean, you are probably hearing the starter solenoid on the starter trying to engage.If the starter can not be jumped directly, I would agree the starter is faulty.

Pressure in the rail indicates the pump is working.When the key is turned on, the pump will come on for about 2 seconds to pressurize the fuel system. Then pump will shut off and not come on again until the engine is cranked. When cranked or when running, the pump will be on full time. To check if the pump is getting a signal, the engine must be cranking over. Or you may pick up that 1 or 2 second signal when the key is first turned to on. Is this the way you checked for power to the pump? How much pressure are you getting at the rail? Any pressure at all means the pump put it there. Injector circuit test: Use a testlight and ground it to the engine. Pull off an injector connector and turn key to on. Probe the two wires to the injector. One wire should have power and light the testlight. If it does, the power side to injector is good. If nothing there, the injector drive circuit is out. If you got a steady light on one wire, then check the injector ground circuit. Move the testlight lead from ground to the positive battery post. Now probe the injector connector's wire that did not light the testlight, while someone cranks the car over. If working right, the testlight should now be blinking, meaning the computer is properly grounding the circuit for injector to pulse. If both tests pass, the injector circuit is working right.Good luck.

sounds like a relay is dead...the clicking sound is the relay turning on and off again...like "tick, tick tick, tick"? there is a relay behind the plastic paneling but you would have to investigate to find out which one it is...just pull off the paneling where you hear the noise and follow it to the relay that is clicking...

the problem is your fuel lines, in the engine room over the upper planum. they are pretty old and they will crack. Usually that samell comes when starting the engine in cold. Probebly your fuel line are finito. Change them all. Hope this will helps.

you can try a bg trany service if that doesnt help then its going to be a rebuild,sorry good luck.