S13 sr misfire, not charging, starting issues

[GLoBaLReBeL420]

#2 : If you press the brake pedal and the revs drop than check the valve that runs inline from your Brake booster to your engine. This can cause what you are seeing...
- Also, if you are running a Walbro 255 with a stock FPR, you need to fix this ASAP. This will make your engine run much to rich. Buy a Nismo FPR and inline gauge to set your PSI.

#3 : Don't have a easy answer for ya. I would get the FSM and find your alertnator wires and do some resistance checks. Hopefully nothing is broken, but what you are explaining seems to be a bad alernator relay.
- Test: Get battery charged full. Take voltage reading.
Take car out for long drive, keeping RPMs above 1500 rpm (needed to charge battery)
After a good 10 minutes, pull over and check voltage. If the same than alternator is working as it should. If less or car dies, than either alternator is broken or wiring is incorrect. Check FSM and repair.

-Matt

[Martinem092396]

Originally Posted by GLoBaLReBeL420

#2 : If you press the brake pedal and the revs drop than check the valve that runs inline from your Brake booster to your engine. This can cause what you are seeing...
- Also, if you are running a Walbro 255 with a stock FPR, you need to fix this ASAP. This will make your engine run much to rich. Buy a Nismo FPR and inline gauge to set your PSI.

#3 : Don't have a easy answer for ya. I would get the FSM and find your alertnator wires and do some resistance checks. Hopefully nothing is broken, but what you are explaining seems to be a bad alernator relay.
- Test: Get battery charged full. Take voltage reading.
Take car out for long drive, keeping RPMs above 1500 rpm (needed to charge battery)
After a good 10 minutes, pull over and check voltage. If the same than alternator is working as it should. If less or car dies, than either alternator is broken or wiring is incorrect. Check FSM and repair.

-Matt

Hey thanks for the input Matt. I checked the hose from booster to manifold with soapy water and it's not leaking any air. And I thought the stock fpr was good enough with the walbro but I guess I'll look into that more.