Guys, I bought a particularly nice 04' Concours this weekend with 38K miles, but it can't be ridden due to excessive exhaust smoke. Here are some particulars, and maybe you can offer some ideas? Otherwise I will be breaking it for parts.
-bike looks well cared for and exceptionally maintained for year
-bike starts quickly and easily on choke when cold
-idles well off choke after about a minute
-might stand a good valve adjust
-oil drained and examined. Only 2 qts came out (inc filter) but it looked pretty clean. No particulates.
-refilled with the proper grade of dino oil and filter
-removed, examined and reinstalled cam tensioner (small spring was crooked)
-started....might be a little quieter now
-no real smoke at idle
-when revved and warm, it smokes profusely
-took it for a 1/2 mile spin. Runs generally OK, but the plume behind me every time I accelerated was massive
-back into the garage, oil dripping from exhaust unions
Regardless of how nice, I know an 04' C10 isn't worth too much, and certainly not worth rebuilding the engine as far as my time and money are concerned. Does anyone here have experience or insight as to what may be causing the oil smoking? Something cheaper and easier than a dropped valve (remember-upper end noise) or possibly rings? What does it sound like to you?
Thank you!
-bike looks well cared for and exceptionally maintained for year
-bike starts quickly and easily on choke when cold
-idles well off choke after about a minute
-might stand a good valve adjust
-oil drained and examined. Only 2 qts came out (inc filter) but it looked pretty clean. No particulates.
-refilled with the proper grade of dino oil and filter
-removed, examined and reinstalled cam tensioner (small spring was crooked)
-started....might be a little quieter now
-no real smoke at idle
-when revved and warm, it smokes profusely
-took it for a 1/2 mile spin. Runs generally OK, but the plume behind me every time I accelerated was massive
-back into the garage, oil dripping from exhaust unions
Regardless of how nice, I know an 04' C10 isn't worth too much, and certainly not worth rebuilding the engine as far as my time and money are concerned. Does anyone here have experience or insight as to what may be causing the oil smoking? Something cheaper and easier than a dropped valve (remember-upper end noise) or possibly rings? What does it sound like to you?
Thank you!