Ok so my car didn't get driven for about 2 months I started it up and it idles rough. Also sometimes if you floor it when you come back down to idle it idles worse sometimes pops and has backfired once. Not bad just barely. Could it just need a tune up? It's been a few years. Could it need the timing adjusted? Maybe jumped timing? What you think?

 

If it was running ok before it sat up, it most likely could be either bad gas or water in the gas. Try a can of Sea Foam or something similar in the tank and top it off with fresh gas.

 

I've ran a few tanks of gas through it. Still does it. Gonna change the plugs and wires, cap and rotor etc and see what happens.

 

Changed plugs, wires, cap, rotor. Now the car is having another issue. If it's in gear idling it wants to die. The rpm's will drop to 500 and then try and keep it's self running but sometimes dies. I pushed the idle screw all the way in and nothing changed. I'm surprised it didn't raise the idle sky high. So I'm a little lost.

 

Could moisture have built up in the a/c component that connects to the engin?

 

I doubt that, idk though. Maybe IAC?

 

Found a leak at the back of the intake, back passenger side... Fun.

 

Ouch