Now I am pissed Options

[ruddyboys]

Just spent another 40 bucks to rebuild these damn carbs. Put them back on and I still have the same problem of carbon building up on the plugs. Could the PO of the the carbs made the hole in the jets bigger? Can I have this problem because the rings haven't seated yet? I know the valves need adusting could any of these be the cause?? (IMG:style_emoticons/default/ar15.gif)

[lapuwali]

Champion what plugs? The heat range is what's important to know. If the plugs are too cold, you're never going to get it to run well. Is the carbon only building up on the rim around the center electrode, or on the ceramic portion of the center electrode, or is it covering the whole electrode (black sooty fluffy looking stuff)? Plug reading is something of an art, and some of the stuff you read about plug colors was written 30 years ago, and only applies if you're running the same gasoline that was available 30 years ago. The addition of oxgenators and the removal of lead since then have both altered the colors seen on the plug.

Unless you're really wanking on the engine and doing a plug chop (that is, killing the engine while it's at high revs, and coasting to a stop, then checking the plugs), the color you see is also completely unaffected by the air corrector jets, which really only kick in at high revs. Idle or run at light throttle for even a few minutes and the color you see is dominated by the idle mixture screws and the idle jets.

Try this: engine warmed up, screw in the idle mixture screws half a turn at a time (doing all four), until the engine starts to stumble. Back them all out a quarter turn. Drive around the neighborhood for a few minutes at light throttle. Check your plugs now. If they're still covered in soot, the plugs are way too cold, or you have a major leak internal to the carbs (much less likely if it's all four plugs), or your idle jets aren't really 50s anymore (possible, but easy to fix, though it will cost you another $20 for a set of idles). Pull the idle mixture screws out all the way and look at them, too, and make sure the tips aren't buggered. If the plugs AREN'T covered in soot, then you've found the problem: you just have the idle mixture set too rich. 2.5 turns out from lightly bottomed is the usual starting point, but if they soot up at that setting, you need to lean them all some.