happysaws
Addicted to ArboristSite
Okay...so I have an old Remington chainsaw that was running lean when cutting, even with the high idle screw set 3+ full turns out.
I ruled out the following;
*carburetor
*fuel pickup
*fuel lines
*air filter
*points (gap)
*coil/condenser/flywheel magnets
*condition of p/c
etc...
The saw would start in 3-4 pulls, idle like a champ, rev up great and make 4-5 strong cuts. After the 6th or so cuts (in about a 8in. log) the saw would begin running lean and eventually stall and shut off.
It would then be VERY difficult to restart.
After running out of ideas as to what to try next, I finally exchanged the old Champion J6J spark plug for a brand new CJ6. The old plug put out consistant, hot blue spark, I had no reason to think that the plug was bad.
After a new plug, the saw cuts great, never runs lean (even when hot), and always starts on the 1st pull when warm.
I did not touch the carburetor settings or anything else when I changed the spark plug.
So.... My question is; why would a faulty spark plug cause the saw to run lean? Or what could have happened to the spark plug to cause it to make the saw run lean and stall?
Any input is greatly appreciated!![emoji4]
I ruled out the following;
*carburetor
*fuel pickup
*fuel lines
*air filter
*points (gap)
*coil/condenser/flywheel magnets
*condition of p/c
etc...
The saw would start in 3-4 pulls, idle like a champ, rev up great and make 4-5 strong cuts. After the 6th or so cuts (in about a 8in. log) the saw would begin running lean and eventually stall and shut off.
It would then be VERY difficult to restart.
After running out of ideas as to what to try next, I finally exchanged the old Champion J6J spark plug for a brand new CJ6. The old plug put out consistant, hot blue spark, I had no reason to think that the plug was bad.
After a new plug, the saw cuts great, never runs lean (even when hot), and always starts on the 1st pull when warm.
I did not touch the carburetor settings or anything else when I changed the spark plug.
So.... My question is; why would a faulty spark plug cause the saw to run lean? Or what could have happened to the spark plug to cause it to make the saw run lean and stall?
Any input is greatly appreciated!![emoji4]