point
04-07-2011, 02:07 AM
My first bike was a 750 Norton Atlas. I bought it second hand and as with all good Nortons, I was always repairing it. After about a year, it developed an intermitent miss. Sometimes all the time. Sometimes only at certain rpms. I tried everything. Points (dual point system), plugs, wires, carb tuning and so on forever.
I finally took it in to a Norton dealer (yes, they used to have them) and after a few hundred bucks they said it was all good.
I picked it up and got about three blocks and it started missing. Back to the dealer. They charged me for more parts and called me after a week and said all okay.
Picked it up and it ran great. Next day, you guessed it. Same old missfire. I then took it to a custom chop shop. These guys should know. They rebuilt the heads and I forget what else. Hundreds of dollars in 1970s money.
I'm going broke.
Did it resolve? nope. Lots of power when it ran but same old miss.
Fast forward next year. I was moving out of the country so sold the bike. The guy I sold it to wanted a few maintainence tips so I gave him a tour of the bike. I pulled the distributer cover off and showed him the system. He took hold of the distributer shaft and gave it a jiggle.
"Should it have this much play?" he says.
OH MY GOD!!!!. THe shaft had too much play. At certain rpms it would lean over to one side and only actuate one set of points. We bought a new distributer bushing for 50 cents and put it in. Problem solved.
I missed it, the dealer missed it and the oh so great chop shop guys missed it.
A 50 cent fix. I will never live it down.
I finally took it in to a Norton dealer (yes, they used to have them) and after a few hundred bucks they said it was all good.
I picked it up and got about three blocks and it started missing. Back to the dealer. They charged me for more parts and called me after a week and said all okay.
Picked it up and it ran great. Next day, you guessed it. Same old missfire. I then took it to a custom chop shop. These guys should know. They rebuilt the heads and I forget what else. Hundreds of dollars in 1970s money.
I'm going broke.
Did it resolve? nope. Lots of power when it ran but same old miss.
Fast forward next year. I was moving out of the country so sold the bike. The guy I sold it to wanted a few maintainence tips so I gave him a tour of the bike. I pulled the distributer cover off and showed him the system. He took hold of the distributer shaft and gave it a jiggle.
"Should it have this much play?" he says.
OH MY GOD!!!!. THe shaft had too much play. At certain rpms it would lean over to one side and only actuate one set of points. We bought a new distributer bushing for 50 cents and put it in. Problem solved.
I missed it, the dealer missed it and the oh so great chop shop guys missed it.
A 50 cent fix. I will never live it down.