Hard to tell by your description. How long since a tune-up? Any applicable trouble codes, at the least, you need an obd2 code reader to check for codes. Use a gage and check fuel pressure.
January, 26, 2011 AT 9:58 PM
I would say it could be the fuel system, but its sounds more like your timing is off. Timing on a vehicle is critical for normal idle performance, have your local mechanic check to see if the timing is correct.
Hope this Helps!
March, 2, 2011 AT 4:17 PM
Need a few basic tests done to head in right direction. Compression about the same on all cylinders?