Jump to content

Kdx 220r - strange engine noise


Recommended Posts

I got an unusual engine noise in my 2002 220r that sounded like $$$ going up in smoke, and I'm baffled. Only had bike a week, it was bone stk and had probably 30 hrs or so on it when I got it. I haven't even gotten to the trails with it yet. It runs rich, so I had just removed airbox lid ( 1st mod ) and changed pilot jet to a #40 ( I had a #42 I was going to put in it , but that is what was already there ). Well, engine was cold and I was revving it to clear it out some and all of a sudden a noise started coming from the engine that I can only describe as like a worn-out electric motor or maybe a dry or "spun" bearing. I am not familiar yet with water pumps or KIPS or any Power Valves, but the first thing that came to mind was what I have read since I got the bike about 220's breaking stk pistons. I don't think that was it because it still idled until I killed it, and after waiting about 2 or 3 minutes, I started it up and the noise was gone. Does anyone have any idea what this might have been? Sounded expensive.

Link to comment
Share on other sites

Since the noise was gone after I restarted it, I decided to go ahead and try it .

Today I rode it about 4 miles on the little track in my yard, mostly just cruisin but wound it out in 3rd & 4th a few times and all seemed fine. It even feels better with the # 40 pilot and the fresh gas @ 40:1 with Maxima castor 927.

1. When the noise started, I had just changed the jet and had removed the filter for cleaning, so airbox was wide open and seat off and I was standing there revving it. So with the intake noise amplified like that, could it HAVE been the KIPS system I heard.

Does the KIPS rattle all the time, or only at certain RPM. Whether I run it easy or hard, I don't really hear a change in engine noise while riding.

2. Does that oil mixture sound ok and safe. That's the oil and ratio I run in my '79 250 Elsinore for Vintage Racing. The KDX plug looks great now (greyish) as compaired to black and oily before. ( airbox lid completely removed, CDI bolted inside box)

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

×
×
  • Create New...