2011 RGU Engine "clank" sound... help!!
Need some help here... On the way in this morning I noticed a "clank" sound coming from the left side of the engine. It is occurring in gears 2-6 at all RPM's but much more noticeable between 2750 and 3000. It only happens when I'm cruising at about 15-25% throttle and then quickly increase the throttle to pass or speed up. In the moment when I increase throttle, it sounds like a metal on metal "clank - clank" noise coming from the left side. I couldn't tell what cylinder it was, but am guessing the front. It only lasts for a brief moment... but it sure doesn't sound good. Its kind of a "tinny" sound like if you were to take a fork and bang it against something metal. I can reproduce it every time if I back off the throttle, load it up to about 15-25% and then quickly open it up.
Its a 2011 RGU w/ VH 2into1 pro pipe HO and a PCV. I have been trying some different maps in it lately, but I don't think that's the problem.
Any help would be greatly appreciated, freaking out a little here. Thanks MIKE