Swap the brain with another bike. I bought a used 84 650 and the brain was bad. Same problem. Swapped it out and had spark on both sides.
If not brain, coils, not coils, plug wires, then plugs. That's all there is. Make sure your coils are well grounded. On Fri, Jun 10, 2022 at 7:54 AM Paul Bellefontaine <bellerki...@gmail.com> wrote: > Sounds like you have a bad coil > > On Thu, Jun 9, 2022, 8:17 AM JP4 <jwpark...@gmail.com> wrote: > >> Year : 1982 >> >> Make: Honda >> >> Model CB450T Hawk >> >> Mileage: less than 1000 >> >> 30mm Keihin carburetors >> >> The bike was running about 10 years ago. It has been sitting in my shed >> all that time. I had a friend clean the carbs. I cleaned the tank and >> filled it with fresh fuel. I purchased a new battery. At first I had no >> power. Cleaned the contact at the starter and the electrical came on. The >> bike starts and runs now but runs rough. I checked the muffler pipes where >> they exit the head and the pipe on the right side is not hot. I can hold on >> to it. The pipe on the left is too hot to touch. >> >> I pulled the plug on both sides, connected the plug to the plug wire and >> set the plugs against the cylinder head while I cranked the engine. Both >> plugs had spark, the plug on the left may have had a stronger spark. Since >> I have two bikes, I tried swapping plugs and even carburetors from the >> other bike. There was no change in performance. When I had the plugs out of >> the bike and cranking the engine, both cylinders seem to have comparable >> pressure based on the air coming from the spark plug holes. >> >> Since the bike was sitting in a non-temp controlled metal shed in Alaska >> and the contact to the starter was so corroded I had no power to begin with >> and that I have tried two sets of carburetors and the bike has less than >> 1000 original miles, I think (hope) the problem is electrical and not the >> cylinder or carburetor. >> >> Does anyone have a suggestion? >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Nighthawk Motorcycle Lovers!" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to nighthawk_lovers+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/nighthawk_lovers/475de4e2-e1de-4675-bcad-8b8a8eece940n%40googlegroups.com >> <https://groups.google.com/d/msgid/nighthawk_lovers/475de4e2-e1de-4675-bcad-8b8a8eece940n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to nighthawk_lovers+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/nighthawk_lovers/CABKQXo7RLjVx3uRG%3DuPKhxSLTbyZ5OEVdOXu4dW9kPqvuDSbHA%40mail.gmail.com > <https://groups.google.com/d/msgid/nighthawk_lovers/CABKQXo7RLjVx3uRG%3DuPKhxSLTbyZ5OEVdOXu4dW9kPqvuDSbHA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to nighthawk_lovers+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/nighthawk_lovers/CAJLiyZf1RppK_yBGruw_2kYa%2BNTReFX%3D6FWQ%3DQ6YwtCa2d%2B_oA%40mail.gmail.com.
