My first instinct tells me the Idle Air Control Valve would be a good place to start.
Lets assume you have CLEAN and water-free gas. You have spark. Now INSPECT your distributor cap for "tiny" hair-line cracks! It's a low cost item so I would replace it anyway so you know the status of most of your spark plug chain.
NEXT be SURE your car is TIMED correctly! Your timing may have jumped a tooth!
Anthony
Check for fuel compression, gas filter and try, a gas treatment, you buy it at auto zone the gas treatment is suppose to clean the jets . if you think is a valve issue then you should give it a compression test I would use the type gauge that screws to the piston hole and check each piston for compression.
good luck.
SOURCE: 1986 nissan 300zx driver power
Did it rain before it happened? (Humidity?) It happened to my 2000 Maxima. A few days later it was OK. I also checked under driver's seat. I thought maybe I was pushing on a wire with stuff I had there..?
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check timing, see if belt may have slipped out of timing, and need pressure tester to test pressure where the fuel goes into the fuel filter. check for vaccuum leaks.
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1986300zx,will not shift into overdrive,mechanic says the overdrive solenoid is bad or the relay,the od light on the shifter states...help!
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fusible link on the left side of the engine.right next to the lip where the hood overlaps the frame. It sholuld have a cover over them but the one that is blown is either green with 2 wires or red with 1.
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Change the brake light switch.Located at the pedal
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