JHBMX5
Jim
I have a 79 sreet tracker, engine rebuilt, .020 over, pod filters, mac 2 into 1.
When the bike is good and heated up, cruising at 60 mph plus, I hear what sounds like spark knock, if I let off the gas a little it stops, accerate a little it gets worse.
The carbs are re-jetted, pilot 30 - one up , main 145 - 4 up, the needle I forgot to document the postion , I think it was set to fact. # 3 postion.
Bike still has points, all ignition parts are new, coils, plug wires, caps all new, new advance springs.
I re-tarded the timing on both sets of points , seemed a little better, running premium fuel. The bike runs really good , idles great, no flat spots or hesatations.
What would raising the needles one notch do ?
Maybe it just something rattling and it sounds like spark knock ??????
I'am at loss here guys, any ideas ?
LATER
JIM
When the bike is good and heated up, cruising at 60 mph plus, I hear what sounds like spark knock, if I let off the gas a little it stops, accerate a little it gets worse.
The carbs are re-jetted, pilot 30 - one up , main 145 - 4 up, the needle I forgot to document the postion , I think it was set to fact. # 3 postion.
Bike still has points, all ignition parts are new, coils, plug wires, caps all new, new advance springs.
I re-tarded the timing on both sets of points , seemed a little better, running premium fuel. The bike runs really good , idles great, no flat spots or hesatations.
What would raising the needles one notch do ?
Maybe it just something rattling and it sounds like spark knock ??????
I'am at loss here guys, any ideas ?
LATER
JIM