tHe_sTiG
New Member
- Joined
- Jan 28, 2010
- Messages
- 190
- Reaction score
- 2
- Points
- 0
- Location
- Saudi Arabia
- Members Ride
- VZ Executive
If it's OK when over a certain RPM, I very much doubt an electrical issue. I'd say a valve is sticking open and at higher RPM it slams shut more which explains poor compression on 1 cyl. Maybe a top end clean might help if it's a carbon buildup around the valve but best way to tell is to remove the inlet manifold.
Alright, it seems we're on to something here. The dealer suspects its either a stuck or broken valve... if that indeed is the underlying problem, repairs and labour will cost a hell of a lot less than an engine rebuild. Let's hope that's all it is. The cylinder in question is cylinder 3.