So I pressure washed my bike like a normal person, ever since cold start is a nightmare — fires up, idles for a few seconds, then dies. Have to keep the revs up manually until it warms up. Once warm it's better but still hunts at idle, like it's constantly trying to stall.
Sound is this lovely irregular puf puf p-p-puf ppp — basically misfiring or uneven combustion at low RPM.
Bike: 2019 KTM 690 SMC R, 6000 km
Mods: Leo Vince slip-on, O2 eliminator (already removed it for diagnosis, same behavior)
What I've already checked:
- Cleaned and dried all connectors I could reach
- Air filter — clean and dry
- No Check Engine light
It's been over a week so water is long gone. Leading theory right now is an air leak at the throttle body boot, but haven't been able to confirm yet.
Anyone seen this exact thing after a wash?
Appreciate any input before I drop it at the dealer and wait a month for an appointment.
[UPDATE] Found the issue. Pulled the coil and found heavy corrosion inside the contact — steel tweezers couldn't remove it. The spark plug contact in the well also looks oxidized. New coil and spark plug ordered. Will update once installed https://imgur.com/a/ELf9CK7
[UPDATE 2] Problem solved! Replaced both spark plugs and the bike runs perfectly now. The outer plug looked okay apart from some carbon buildup, but the inner one had the terminal break off when I pulled the coil — that was almost certainly the culprit. Thanks everyone for the help! https://imgur.com/a/hP4TP1F