I got a basket case 800 a few months ago to put the lower unit on my 650. I got a wild hair to try and get the thing running. Compression checked out fine. I replaced the rotten wiring harness and after some research and seeing all the ignition troubles the 4 post switches caused I upgraded to the Rapair CDI ignition system. I cleaned out the carbs and ended up replacing one as the main jet had fused to the body. <br /><br />I got it all assembled today and fired it up for the first time in who knows how many years. I set the max advance to 23 and made sure all the other adjustments were where they should be and it popped right over. The trouble is I can't get it to come down under 1500 RPMs without it sputtering out. I played with sync'ing the carbs for an hour or so and pretty much left it at dusk with the idle stop screw all the way down to hold it over 1500.<br /><br />It is very responsive and goes from 1500 to 5 grand in a blink. there doesn't seem to be any hesitation or stumbles along the way. <br /><br />So I have two questions...<br />The lower unit is a jet so I am curious if it will hurt anything to run it as is. I don't have to worry about tearing up gears or anything and if I need to slow down for a no-wake zone I suppose I could just balance with the reverse nozzle.<br /><br />Any ideas you have on what the culprit may be would be greatly appreciated. <br /><br />Even if the verdict is to run it as is, its still a waste of fuel so I'd like to fix it if I can figure it out.<br /><br />thanks for the assist.<br />Dan<br /><br />Its a 1970 inline 4 cylinder 800 now w/ aftermarket CDI ignition.<br /><br />** almost forgot... it was cooling fine and never got overly warm even sitting in a tub recirculating 80% of the water.<br /><br />I'll redo a compression check tomorrow now that its shown some signs of life again. even cold and bone dry all four were within 15% of each other. Sorry I don't recall the exact numbers.
