db280z

yea it is fuel injected. i did a full tune up on it and still continues to do the same. How would i go on about testing the air regulator? would i just have to check to see if it has continuity in order to see if its still good?

Yes the motor is timed a buddy of mine had done the timing for me like about a week ago. We had to retard the timing because it was too far up. But now when its idling at warm temperature it runs pretty smooth @ about 800rpms

I have a 1977 Nissan 280z and i have about three major problems. The first is that the car jerks really bad when im going really slow in all my gears especially when i try to accelerate slowly. i feel like its coming from the differential. I still have to replace he mustache bar bushings and the differential mount. i am currently replacing the u-joints as well. i just want to make sure what to do before i start spending money left to right. the second problem i have is starting up the car in the mornings or at any time when the engine is cold it takes me about 3 to 4 minutes just to get it to turn on. The car turns over and over but sometimes it doesn't want to catch on until i keep trying over and over. i checked my fuel pressure regulator and that seems to be pushing out 40 psi, and the fuel pump has been replaced as well. the car does not tend to have this problem when the engine is warm. My third problem is that when I'm accelerating sometimes my rpm's stay up really high and i have to wait for it to slowly come back down in order for me to put it into gear so i don't get a bad shift. thanks for your help guys.