Feq quick questions

[zane9000]

I am having trouble getting my car up and running for the first time and I have two questions I have come up with. So far the only way I can get the car to run at all is if I pump the gas constantly and have some the accel enrichments turned on. If I zero them out the car will stumble a bit but wont start. I have had my ASE anywhere from 0-50% with pretty much the same result.

 

First, and most likely, problem is fuel. I am using an old mystery pump I pulled off a junkyard Z. I dont think it is stock. It takes 4-6 seconds to pressurize the system and once it is turned off the pressure will drop from ~40psi to ~5psi in under a minute. I was able to get the car to run on this pump previously, but that was over a year ago on a different setup. Also I don't remember the pump having such a problem holding pressure. Does this sound like something that would cause my stating problem?

 

My second guess is the coil not getting enough current. I am using direct spark output from MSII and have it run through the cab to the coil with 18guage wire. Is this to thin? I had run 10gauge on a previous setup that worked, but this seemed to be overkill.

 

edit: The title is supposed to be "Few Quick Questions" but Im a non-proofreading jerk and now I cant edit the title....

[mobythevan]

I don't think you'll get much input on this problem until you put a new fuel pump on the car. Running with a fuel pump that drops to 5 psi pressure?? No reason to make it harder than it has to be to get megasquirt running.

[zane9000]

I just wanted to make sure that a rapid pressure drop like that after it was shut off was not normal for any pump. I had never seen it before, but I wanted to double check.

[mobythevan]

I misread the post, I thought it was dropping while running. I have seen them drop off all the pressure like that when turned off.