1998 Audi A4 engine computer

Best check 1st the sparkplug, compression and injector for that cylinder if you're talking about misfiring.

[quote:2290adc5bc="rasmataz"]Best check 1st the sparkplug, compression and injector for that cylinder if you're talking about misfiring.[/quote:2290adc5bc] well i already replaced the coil packs and plugs, the only thing i havent tested is the injector, but the thing is im getting no spark when i ground the plug. i guess the only way to check for a bad computer is grounding the coil pack to check for a little spark. but a bad injector will cause a missfire?

No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it

so maybe i have a problem somewhere in the engine wiring harness