mkusmc Posted February 20, 2014 Share Posted February 20, 2014 My truck started acting up a week ago. It started sucking gas real bad and idles rough. Now it's sitting in the garage. I finally got it started again. About every 2-3 seconds it injects a big blast of gas causing the rough idle. It does this at idle and under any throttle position. I tried to drive it around the block to see if I could "clean" it out. The brakes and clutch went to the floor so I shortened the drive. Any ideas on the cause of the over injection or other problems? Thanks Link to comment Share on other sites More sharing options...
88whitemanche Posted February 20, 2014 Share Posted February 20, 2014 Have you checked your vacuum lines? And check to see if the vacuum line at the map sensor is not disconnected or corroded? Link to comment Share on other sites More sharing options...
cruiser54 Posted February 20, 2014 Share Posted February 20, 2014 The vacuum lines under the throttle body on the intake manifold are prone to cracking. Also the intake bolts loosen up. Start there. Link to comment Share on other sites More sharing options...
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