Jedi,
I had to take a break from the work shop. I see you guys are talking spark plugs today. Whay are the break-down signs of the so called "bad plugs?

1 .Is it hard starting?
2. Is it fowling?
3. Is it the engine misses at high speed?
4. Is it short runs even though the ignition battery was at full charge?
5. Is it a not Idle too goodthing?
6. Is it got to do with the type of gas you use on spark plug life?
7. Is it got to do withthe brand of oil used in fuel?

Thanks Capt,n

Edit...I added #7