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Is there any possibility a small object fell into the injection throttle bodies when you replaced the air filter?
Fluids (no filter this time) about 100 ago.
You drained the oil. Did you actually put any in? It can happen.
If you can't record the noise, at least try to describe it. If you didn't drain the oil and its been running fine for 100 miles since, then I doubt it is mechanical or oil related. Based on the scenario you describe, my bet is that you may have reversed the wires connecting the electric petcock and the fuel level sensor. Now the pump is trying to suck like crazy to combat the closed petcock. Does it make the noise when you turn on the key? Or do you actually have to start and run? The good news is that you can just set the wires right and you'll be good to go with no noise. The bad news is that you have permanently cooked your fuel level sensor.Patrick HayesFremont CA
I'm not sure how to attach a audio file to a post - I did record it holding my phone about a foot off each valve cover and can follow instructions for posting or can mail it to those interested in hearing it.As far as the oil goes - I did a change about 200 miles ago and it was the no filter change (just oil) all was well til I took the tank off to change the air filter.As far as the electric Petcock goes - it has a manual and the electronic petcock connector is zip tied to the frame under the tank. Noticed that it was not capped off and contacts were visible - I'll seal it off now.Today, I've removed the tank and gone thru the air filter routine and looked around - nothing amiss. Dropped the oil and replaced the filter just to be safe everything is clean and no metal on the magnetic plug. Pulled the right valve cover and it looks normal with oil pooled in the recesses (normal).Don't know what to look for to verify the recall was done properly or at all - it was supposedly done by Jason Speaker when the bike was new - never have had reason to doubt his work or integrity. tho. I cant find the link on this board with pics of what to look for can anybody send me the link?I'm going to leave it opened up until I've followed all the tips then close everything up and start it with fingers crossed.Again, if you want to hear the audio - PM me your email address and I'll send it on.Thanks all for the help so far.Walt
I didn't read where the OP says the noise goes away in about 5sec. Maybe I missed it. OP?I'm not going to listen to the audio on account of I'm deaf and don't do well with noise over electronic devices.BUT -- I see where you inspected for top end oil by looking at the stopped engine for pooled oil in the head recesses. All that proves is gravity. Since you already have it on the center stand and the valve covers off, why not start it and make a big oily mess all over the garage visually check for oil oozing out of everywhere. Have a rag ready to catch drips. While you're doing that, you can do the old-school collapsed lifter test: Put your finger on the heel of each rocker arm (push rod end) and then the toe end (valve end). Can you feel lash at any rocker? Does the quality of the noise change as you press on any one? Then that's the bad boy. Also, a stethoscope is your friend here. It will tell you exactly where the noise is. We're assuming this is a hydro-related problem since the hydros have a bad reputation for making expensive sounding noises that they can back up with actual expenses. Let's not dismiss the problems common to all the engines -- little end bushing, bad oil pump, etc.
Did you add any gas in the process, anything else happen no matter how insignificant it may seem?How long was the bike down between last running ok and the filter changeYou say the knocking goes away after about 5 seconds, that might be how long it takes the hydro tappets to re-fill.It really doesn't seem that you did anything to explain the noise.
no gas added - only thing else I touched is adjusting the shift linkage (nope, not touching anything it shouldn't).Going to try and post the recording in a minute.Walt
Is the sound the same if the bike is on the side stand or the center stand? Definitely an engine noise, not a vibration noise? Is the side stand perhaps loose as heck and moving around?
Once it's running, work quickly to check things. If the clatter is significant, prolonged running isn't going to improve things. The visual and push tests of the rocker arms should take less than a minute. Then already have the stethoscope ready to probe around the engine. What does the oil pressure light do while this is happening (too much to expect an actual GAUGE -- who needs it? )?
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