SR20 Fuel Problem. Very strange(long post)

[S13NismoStyle]

Alright, im going to try to describe whats happening the best that i can.

My car isnt getting enough fuel, it will bearly hold an idle and it keeps misfiring. AFRs are like 18:1.

Heres what happened/ what ive checked out so far. The other day on my way home, i noticed that my brake light was on and i could here this clicking noise. Like going crazy. After checking under my dash i determind that it was my CHECK BULB RELAY that was going crazy. (clicking on and off very very fast, this relay turns on the brake light when you first start your car to make sure its working) I replaced the relay and it didnt help it. So obvisiously the problem isnt the relay but what ever is triggering the relay. This might have something do to with the fuel, but i checked the fsm's and couldnt possible see how.

Secondly, now my car is hard to start. I have to jumpstart it to get it to run now. I checked the volts on my new optima battery, 10 volts. I went
checked my batter to see if the alternater was charging it. I was getting about 11.5-12.5 volts at the battery. So the alternater is charging, just not very well.

I made sure that i heard the fuel pump come on with i turn on the ignition. But i checked the voltage at the fuel pump at its showing about 6.5 volts. that seems kind of low.

My car will rev up, and the afrs are around 14 or so, when its not underload. some times it will stumble and miss. I havent tried driving it yet.

I think for what ever reason, im not getting enough voltage to my fuelpump and im not having adequate fuel pressure.

Would a bad alternate effect the fuel pump? does the fact that that relay keep comming off and on might have something to do with the poor charging.

I dont know where to start. thanks for any advice

[bjones414]

An alt. should run between 13.2 and 14.8 volts. I know on Dodges if the voltage drops below 12v the cluster starts acting up and relays start clicking everywhere. Also you have to look not just at fuel pressure but also at flow, I have seen alot of fuel pumps put out the proper pressure, but not enough flow.
The easiest thing to do would be check you battery cables, and all your grounds. Also load test the batt. and make sure you don't have a dead cell in it. If you live near an parts store take the alt. off and have it tested.

I just reread your post and seen you are getting 6.5v at the fuel pump. That is low you should be reading 12.5+ volts there.

[D.Bo]

take the battery off and put it on a 2amp charge over night. take off your alternator and get it checked at autozone. since its an sr alternator just tell them its a ka one. it puts out the same amps.

if your running a walbro fuel, which you should be, you can here in turn on. if not your not gettin enough amps to the pump.