My friend and I bought two 240zs. Mine is a 1972. We first tried starting mine; fuel wasnt getting past the fuel pump. So I bought a new fuel pump and installed it. Fuel started moving through! But then once the fuel hit the carbs it was spewing out of one of them.
One of my other friends who knows a lot of cars let me know that a carb rebuild was in store.
Two days ago we rebuilt the carbs, filled them with automatic transmission fuel and I through them back on my car.
We tried to start my car again; it took a while for the fuel to get to the carbs again because it had been a while. The car wasnt starting.
We were getting a backfire from the carbs...and no fire. I have new spark plugs we checked the spark and firing order of the plugs; everything looks good.
Any ideas? My friend and I are stumped! Plz Help!

 

check your timing first, if you are getting backfire through the carb that would be the number one cause in my mind

 

hmmm...Ive never dealt with timing before...I dont know how to check it or change it; any suggestions? My friend might know...

 

buy yourself a cheap timing light from an auto parts store, it should have instructions. basically you hook it up to the #1 spark plug wire and there should be a mark on your harmonic balancer somewhere and a key to show timing (havent check that on any Z's but every other car i've work on had it) and then basically by rotating the dist it will change your timing...should be around 10-12 degrees

 

240Z = easiest car to time IN THE WORLD! wow, you will feel dumb once you see how easy it is the harmonic balancer, or damper pulley, or just the main pully on your crank has a mark on it, fill that mark in with white-out. ok! thats step one done. now, stand at teh front of the passanger side of the hood and look down at that same pulley, you will notice a metal plate, shine a flashlight on it and you will notice it has notches and number, thats teh timing plate. now start the car and hook up your timing light to the number one spark plug wire (this is teh very front cylinder) and pull the trigger and aim it at that plate, youll see the white-out mark light up at a given position on the timing plate, that right there tells you what your car is at right now in degrees. however you need teh car to run inorder to time it, you twist teh distributor to change it. you might have to re-do the timing setup if the car isnt starting and you think it might be the timing, thats another process that takes about 2 hours at most. pretty simple to do though.

 

Well guys; timing was not the issue on my 240z. We rebuilt the carbs, checked the timing, and there is still a weird "cherping" noise coming from the carbs. I am actually going to try to sell as is...so if anyone is interested I'll post it up for you guys.

1972 Datsun 240z

 

where are u located?

 

Socorro, New Mexico, its 40 minutes away from albuquerque

 

got any pictures?

 

 

Well; I put it up on ebay; here is the link:

http://cgi.ebay.com/ebaymotors/1972-...QQcmdZViewItem