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Old 03-13-2009, 09:47 PM   #1
Join Date: Feb 2009
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Angry 93 YJ engine miss

2.5L I4 FI starting out cold...and drive about 1-2 miles, then motor will jerk and almost miss fire but will not stall...will only last for about a mile, and then after that it runs fine. anybody run into this strange behavior ? Im thinking blocked port injectors or dirty fuel filter ???? any suggestions ?
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Old 03-14-2009, 09:04 AM   #2
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Spark plugs? I would do a full tune up and see if that works.

1992 Red YJ 4.0 with five on the floor and 33's
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Old 03-14-2009, 11:04 AM   #3
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Check your vacuum lines. On older jeeps they get brittle and break.
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Old 03-15-2009, 02:50 PM   #4
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thanks. I will try that
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Old 03-17-2009, 07:04 PM   #5
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mine just did for the 1st time the other day during a hail storm, missing and jerking etc., scared the heck out of me, thought my daughter and I were walking home. But then it just went away and started running fine again,,I dont have a clue what it may have been, I just blamed the weather,,figured something maybe got wet or something..*LOL*
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