car ran fine before it sat for 2years( i would turn it on so it would not seize on me) now ive decided to start driving it again so i changed oil,fixed a cooling leak,bleed the brakes and adjusted the throttle play it had( it added better throttle response) now to the PROBLEM: after about 8 miles of driving i down shifted to 3rd (to kinda feel the power i have been missing) i heard a slight pop( unknown if its related) and the car started putting/stuttering, if i kept it below 1500RPM's it was not as bad but was still an issue and if i let off the gas it would die...it was feeling like a fuel issue because i would hold the gas pedal down and it would have a stop and go feeling to it but how do i check that? also the check engine light was blinking but would not stay on...i do notice that when i turn the car off i can hear a small air leak coming from somewhere under the intake manifold, any ideas?? ive drawn a blank..
