Hi. My daughter has a '98 Beetle. We just changed out the crankshaft position sensor, the check engine light came back on with a code for misfires. Two of the plugs looked really bad and one of the wires just fell apart. So we changed the plugs and wires. The check engine light came back on today with a code of fuel injectors. Could it be dirty? I'm wondering, should we try a cleaner before spending the $400 or so to change them out? She is supposed to take it in tomorrow morning, and we are 2 hours apart, she's at college, so I can't look at it. Any advice?