74 Honda XL 350 - The Turd
- Thread starter adventurco
- Start date
trek97 said:
Yup.
You're not answering my questions. :-\ At what RPM are you setting your idle with a gun? Is there preload on your advancer springs at idle or at rest? If you're springs are stretched, which happens when they get old, you can lose up to 10 degrees or so of advance, which is 1/3 of your total advance.
So, with the timing light on and bike idling, this is where the points plate is when the F mark lines up with the index mark.
For reference, when I set static timing the hash mark on the points plate was pretty close to lining up with the mark on the head.
Sent from my iPhone using DO THE TON
For reference, when I set static timing the hash mark on the points plate was pretty close to lining up with the mark on the head.
Sent from my iPhone using DO THE TON
That's retarded not advanced. As you move toward the timing mark (right) you're advancing it.advCo said:So, with the timing light on and bike idling, this is where the points plate is when the F mark lines up with the index mark.
Sent from my iPhone using DO THE TON
Right. If I said advanced that's my bad, it's retarded. I'm setting idle timing @ 1200 RPM.
Sent from my iPhone using DO THE TON
Sent from my iPhone using DO THE TON
That's way too retarded on the timing. If anything, you should be slightly on the other side of the mark.
trek97 said:
Yep the points plate and advancer is almost identical to my 360 just with one less point. Gap is smack in the middle of spec.
I know its too retarded. But that is what the timing light is telling me. Which is why I think that something's up.
The advance setting on the timing light should be at Zero, yes?
Sent from my iPhone using DO THE TON
Sent from my iPhone using DO THE TON
Check your advancer springs. There should be pre-load on them. If they're stretched, you're losing advance and thus bogging and losing power. It can also cause hard starts and rough idle.
Convert it to electronic ignition.
Buy an old two stroke so you just don't deal with timing chains, valves, or advancers.
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
irk miller said:
I'm thinking this may be where my problem lies. I'll pull the advancer out of the parts motor bin and compare.
If I grab the advancer lobe on the cam with my fingers and try to rotate it there is some slop there.
https://youtu.be/osk6puKlml0
There's not enough tension from the springs. I don't think they're sold as an individual part, though.
I took the advancer off the parts motor, it's a different design with different springs. Seized, going to rebuild and try swapping it on.
There's not enough tension from the springs. I don't think they're sold as an individual part, though.
I took the advancer off the parts motor, it's a different design with different springs. Seized, going to rebuild and try swapping it on.
I've gotten away with removing a coil- basically cutting off the pigtail and pulling one coil to become the pigtail to replace it.
