Having problems with your 1983 Nissan 280ZX ?

Nissan datsun 280zx seems to be flooding out. Black smoke out of the tailpipe, If i dont keep my foot on the pedal when sarting the car it dies! This car has a straight 6. It also has a 1st generation fuel injector, which I know little about. Changed spark plugs, no change. Where should I start to look to get this car running?

Posted / edited by AnonymousUser on : 25-05-2020

Answers :

The coolant temperture senser could be disconnected or open ( no circurt ) If it's disconnected The computer thinks the engine is real cold and turns up the fuel. OHM meter ther coolant temp senser and it should read something to ground 400-1000 OHMs Then it should read the same to ground at the computer. Datsun in their infinate wisdom has made all the fuel senser wires white so yopu have to follow the wire all the way to the computer by hand. At that plug it shouold read the same as it did at the senser using the case of the computer as the ground and you were using the ngine as the ground when you were right at the senser. ( the computer can be losing it's ground can also cause the problem.) The fuel pressure regulater can be stopped up ( no fuel will come out of the returen line going back to the tank) ( high fuel pressure) The vacume line that is connected to the regulater is full of ruel ( the regulatyer is Leaking ) ( needs to be replaced) ( happens alot). Cam timing is wrong ( if it is it won't revup well either) Compression will be low (150 is right for noramally asperated and 120 for the turbo car.) If it's a turbo car oil could be leaking at the turbo into the air itntake.
Repair Help & Product Troubleshooting for 1983 Nissan 280ZX

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