1990 Infiniti M30 Misfiring issue?

[driftkaztik]

90 Infiniti M30vg30e engine.automatic transmission

I recently changed my spark plugs. cap and rotor were good.

I started to notice after a few days that it started to feel like its misfiring.

If i'm at a stoplight and i'm stepping on the brake, it feels start to drop down in the rpms.. between 500 to 900.

put it in neutral and its fine with a lil backfiring action.

As soon as I step on the gas, its stuppers a bit.. then once I get about 20 mph it seems fine.

any ideas??? its kinda an emergency.

Thanks

[180fan]

What kind of spark plugs you using?

[driftkaztik]

ngk regular ones.

I found out what was wrong, nistech suggested it might be the cap, changed it and it is now fine.

Thanks for the help everyone!!!

[NISTECH]

Wow I did that without even posting...lol