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Showing results for tags 'Clearance'.
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This has been an ongoing issue, as I am sure some of you are beginning to notice.. sorry for the somewhat repetitive posts in advance. My valves were out of spec, I was only getting 85-90 PSI of compression. I shimmed my valves to the correct clearance, and I got the compression up to 150 psi. Now after riding my bike for 15-20 minutes, it will start doing the same thing it did before - it will idle super low and eventually bog out. I had the idle adjustment turned up very high, when I gave it a little throttle the idle would kick up for a couple seconds, then it would settle back down to extremely low and bog out. To me this sounds like something with the idle air circ, or jetting. Could something with the valves cause this as well? Want to get a second opinion before I send the head in for the $500 rebuild and still have the same issue. Thank you all again!
Alright TT Gentlemen.. I appreciate any and all who have commented on my posts, without TT and the knowledgeable people in it, things would have taken me much longer. Anyway, I was shimming my valves the other day,before I did it when I checked the clearance.. There was none. I couldnt fit my smallest feeler gauge between any of the valves and the bucket. both on intake and both on exhaust would not fit. I checked my compression before I did this, and it was only at 60/70 PSI which I know is far too low. Before I tear into the engine, I want to get everything I need.. so if A new piston is in store then so be it.. But would valves that have far too little clearance at TDC cause low compression when cranked? Thanks again guys! - Brad