2001 VW VR6 with less that 100,000mi. Was running great until it started running rough(chk eng.light flashing the started running rough...chk eng. then stayed on).Checked for codes.At first, got multiple engine misfire. Replaced plugs; coil pack nd plug wires. Today, got code for misfire on cyl. 1 still runs rough. No other codes received. Old coil pack, still looks good. Old plugs looked good;were NGK...switched to Bosch. Water spray test showed no sparks. Unable to find any obvious vacuum leaks. Added gas dry to tank to address any moisture. Also added inj. cleaner to fuel(92 oct. fuel in tank). What would you suggest I try next??? O2 sensors were replaced within pst 6 mons. Thanks for helping.
What makes this problem better or worse?
no change, hav not been driv the car. in yard idle.
How long has your 2001 Volkswagen Jetta had this problem?
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