Look at this plug...
- Thread starter P Dubya
- Start date
Try installing it on the opposite side of the engine - it should clean up.
- Local time
- 7:06 AM
- Joined
- Dec 4, 2009
- Messages
- 37,962
- Reaction score
- 52,545
- Location
- Pasadena, Texas
RTDaddy
Well-Known Member
I use a sharpie to mark a line along the plug body to indicate the "open" side of the electrode, then install plug with open side facing up into the combustion chamber. Sometimes have to go through 2 or 3 sets of plugs to index them all.
Using Iridium plugs will render indexing useless and a waste of time. 
- Local time
- 7:06 AM
- Joined
- Dec 4, 2009
- Messages
- 37,962
- Reaction score
- 52,545
- Location
- Pasadena, Texas
- Local time
- 7:06 AM
- Joined
- Jul 1, 2015
- Messages
- 6,381
- Reaction score
- 7,957
Likely the result of charge cooling.. nothing to be concerned about......incoming mixture tends to cool electrode that faces the intake valve. A bore scope could visualize the other plugs/valves. Interchange plugs side to side as suggested seems stupid.......how about just replace the engine......plus the usual bad grounds, loose/corroded bulkhead connections, vacuum leaks, loose carb hold down bolts, bad gas, etc......
BOB RENTON
Last edited:
Similar threads
