Diagnose this spark plug

**oj88** · October 23rd, 2021 07:19 PM

These are all pictures of the same plug.

No camera flash:

With camera flash:

**dr. d** · October 23rd, 2021 08:35 PM

Originally Posted by oj88

These are all pictures of the same plug.

No camera flash:

With camera flash:

looks good.
your fuel mix also looks fine.
a good cleaning, gapping, and i think we can re-install it.

medyo dark yung rim.
is it a 'cool' plug? get a hotter plug?

... haven't done plugs in decades...

**oj88** · October 24th, 2021 10:46 AM

Originally Posted by dr. d

looks good.
your fuel mix also looks fine.
a good cleaning, gapping, and i think we can re-install it.

medyo dark yung rim.
is it a 'cool' plug? get a hotter plug?

... haven't done plugs in decades...

It's 7 on the heat range... so it is 3 quarters of the way to a cold plug.

If this is a bit cold for gasoline, I think I'll be fine running LP/propane gas with it. LP burns hotter, or so I've read. They even suggested moving one step to a colder plug when switching to LP, so maybe this will do fine.

Anyway, I'll inspect it again in a few months.

Thanks for confirming.