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Why does this plug look like this?

  • Thread starter Thread starter Guest
  • Start date Start date
TheCafeKid said:
Well, he lucked out. There for a while he was SOL cause I only had 16v GSs, which use different plugs. Now that I have the 1000G, Rose's 550L and the soon to be restored 750B I will have LOTS of plugs for him. Although, now that I will have FOUR bikes to keep running, I might cut back on how often i change the plugs for fear of going broke...LOL
Click to expand...

Forgive the wind up, "the devil made me do it".

If your bike's running anywhere near decent, which I believe it is, plugs should easily last 20,000 kms, even miles! Those discards of yours looked like they would do that.
If you should suddenly loose that ideal AFR, that's a different story. Then you could go broke! :-\\\
 
Thought I'd re-start this issue again...

I've now put around 200 mi on these "new" plugs & they still look brand new - no color.



As mentioned before, didn't touch anything except for changing plugs from the ones on the left to the ones on the right.

Why no color still?? Could I be running that lean? Haven't done any plug chops yet but I'm still puzzled at the general difference between the two plugs run under the same conditions.

Mike
 
hikermikem said:
Thought I'd re-start this issue again...

I've now put around 200 mi on these "new" plugs & they still look brand new - no color.



As mentioned before, didn't touch anything except for changing plugs from the ones on the left to the ones on the right.

Why no color still?? Could I be running that lean? Haven't done any plug chops yet but I'm still puzzled at the general difference between the two plugs run under the same conditions.

Mike
Click to expand...

The pic isn't clear enough of the left plug to tell if they are both the same heat range. If the replacement is a hotter plug, you will have a cleaner looking plug.

The other thought was did you replace/clean the air cleaner recently. If so, the engine could now be running leaner.
If you don't have heating/pinging issues, just ride it and enjoy the economy.:D
 
49er said:
If you don't have heating/pinging issues, just ride it and enjoy the economy.:D
Click to expand...

I tend to agree. Plugs in my 850 look similar and bike runs flawlessly. Bike gets about 42 mpg so I know there is no lack of fuel going though the engine to keep things cool.:p
 
49er said:
The pic isn't clear enough of the left plug to tell if they are both the same heat range. If the replacement is a hotter plug, you will have a cleaner looking plug.

The other thought was did you replace/clean the air cleaner recently. If so, the engine could now be running leaner.
If you don't have heating/pinging issues, just ride it and enjoy the economy.:D
Click to expand...

Hi 49er,

The plugs are both the same flavor. Didn't touch the air filter (K&N drop-in), but I did change to Dyna coils & wires, along with the new plugs.

Apparently the new coils are much more efficient than the stock ones I had & I guess that's why the plugs look so different. The bike sounds different & starts harder, lack of sufficient fuel I guess.

I re-set the fuel mixture screws (had to turn them all out about 1 full turn) and now the bike starts right up (like it did before), sounds "meaner" (again, like it did before) & I'm starting to get some color on the plugs now...

My old stock coils (with new NGK caps) seemed to work just fine - bike ran great - but with the added spark from the Dyna coils it was essentially running lean because the fuel screws were adjusted to the old spark levels.

Anyway, kind of an obvious observation I suppose, hence the sig quote :rolleyes:.

Mike
 
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