Spark plugs black

Can this plug be read at this point?

spray it off with brake cleaner

That is what I use. Im wanting to know what's causing it. Could it be caused buy rings not seating or to much fuel being dumped or the 6al not hot enough?
Thanks

looks like to much fuel if it was oil it would have a wet look not the flat smut look

looks rich as hell and or too cold a plug.

Brand new motor and all the plugs have been like this, 4 set, ngk8. Could this type plug condition cause some smoke? I do think this qft 1250 carb is dumping pretty much. I have or had the idle screws 1 to 11/2 turns out. I think it liked just one.

If that was my plug I'd take fuel away?? What fuel u runnin?

Most carbs the idle mixture screws dial in somewhere around 5/8 to 1 turn off of seat.

That's more than idle mixture. Is the carb set up with power valves? If so what are they? I would wager either they are too high for your engine vacuum and are dumping fuel, or they blew out if the engine back fired... or if the carb was run previously, they may have simply dried out.

Baring all that, its possible the float is set wrong, or garbage is stuck in the needle and seat and the thing is just dumping fuel out the booster because of overfill.

whats the combo? drag car only? I run ngk 10s and they will look pretty dark if I warm the car and drive around the pits, they clean right up after you make a pass though.

Too much fuel.a lot of idle time screw'n with stuff will do that.I run ngk-8 with good results. 6al is fine too.

cool40 wrote:Too much fuel.a lot of idle time screw'n with stuff will do that.I run ngk-8 with good results. 6al is fine too.

A lot of idling and no load on the motor..

That's why people check plugs on the top end after shutting down..
So the idling back to the pits doesn't affect the plug color...

Take that thing to the track and beat on it.....then deside if the rings are hooked up .

I concur........

and do a 651 burn out

use of the 651 out of context makes one look foolish........

Ok, was wondering about the smoke. Oh its a drag only 580 ahead 839/780 i think 294/302@ .050 114ls 112cl.
Thanks

black smoke=fuel....blue=oil...white=water

This is light bluish. Dont really smell like oil unless some fuel is mixing with it. And if it was oil, would the plug look differant? Maybe the rings just arent hooked up yet.
Thanks

When you get the intake back and on carry it to the track and make some passes but if you going to Douglas I hope you go good brakes if it hooks last time we was there the track was not that good plus it look like they move the starting line and finish line had a bad bump

Ok, im about to get some brakes on . Just hoping the master cylinder with the offset brake plate will hook up beside the big ass valve covers.
Thanks

richter69 wrote:use of the 651 out of context makes one look foolish........

Damn Jon,don't be so hard on yourself. 

As for the smoke, could it possibly be black but the oilish green additive is causing the color to change?
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tconnection wrote:As for the smoke, could it possibly be black but the oilish green additive is causing the color to change?
Thanks

It could be from to rich and the rings not seated washing the cylinders down and picking up some oil need to avoid letting it idle very long before you get the rings seated in. Next time you get it running bring rpm up 3000 and get the temp up good before shutting it down and check the plugs.

I'm just learning something about this smoke issue. The hotter the engine get, the less I see smoke and this is only on the passenger side. The driver side ain't as bad. I drove it xmas day and it got up to 190* and it clear up. Any idea what's going on?
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Could it possibly be one of the ventures or barrels on that side acting up?
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