Running rough then stalls

[garretthes]

Going to get a set of NGK plugs. A Nissan mechanic friend said NOT to use anything else.

[240260280z]

I concur with Anne G. Kay

[garretthes]

What's the best tool to buy to test vacuum and fuel pressure? Also, where do you tap into the fuel rail?

[240260280z]

I got a T and measured between the fuel filter and the fuel rail.

Equus / Innova Brand are the common man's low cost choice. Most autoshops have these gauges. Even some walmarts.

http://www.walmart.com/ip/Equus-3620-Innova-Vacuum-Gauge/14644669

http://www.walmart.com/ip/Equus-3640-Innova-Professional-Fuel-Injection-Pressure-Tester/14644670

[garretthes]

Tested the vacuum and it's 13 HG at idle. I'm thinking this is way too low. Going to look and see what it should be

[garretthes]

Can't find the vacuum info anywhere in the FSM

[5thhorsemann]

So are you now thinking you have a manifold leak? Use a propane torch, do not light the fire, start the car and slowley fog the intake with the gas while noting any spots that change the rpm.

[garretthes]

I have replaced every vacuum line and no change. Will carb cleaner work the same? Don't have a good torch handy.

[5thhorsemann]

There are lots of things people use, carb cleaner, WD40 and the like. I like the propane and map gas because I dont have to hose my motor down with liquids, most flamable at that. Torches are cheap and very usefull tools.

[garretthes]

Also I found a ground wire that screws to a bolt on the distributor under the cap. It has a bullet connector on it and is black. Where does it attach?

[garretthes]

Well I have to wait a while to test again. It won't run

[garretthes]

No change. No leak. I tried moving the AFM door in and out and there was no perceptible change in rpm. Is that right?