Malfunction Indication light came on

[Gary Bare]

Was cleaning my 08 Mastiff, with windex, when i sprayed the regulator it made cracking sound, like electrical spark. Key is off. No power on. Why? Also now engine light stays on?

 

[Jersey Big Mike]

OK guys here's my issue with engine light. Installed S&S module so now I can tune my bike, checked alarms and the alarm I presently have is " PO173 bad sites rear" googled and cannot find anything?????

that means its an issue with the rear cylinder -- 02 Sensor or injector needs to be cleaned.

Try the easiest solutions first -- run some seafoam for a couple of tanks and see if its better -- Hell I keep small bottles of it or Marvel Mystery oil on the bike and add them regularly when I gas up, seems to help a lot.

Told one of my HD guys about Seafoam and he couldn;t believer the improvement he got on his softtail!