Spark plugs black

Page 1 of 2 1, 2  Next

Go down

Spark plugs black

Post  tconnection on October 4th 2013, 10:36 pm

Can this plug be read at this point?

tconnection

Posts : 847
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: Spark plugs black

Post  whatbumper on October 4th 2013, 11:00 pm

spray it off with brake cleaner

whatbumper

Posts : 3023
Join date : 2009-11-11
Age : 38

View user profile

Back to top Go down

Re: Spark plugs black

Post  tconnection on October 4th 2013, 11:16 pm

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

tconnection

Posts : 847
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: Spark plugs black

Post  69F100 on October 4th 2013, 11:46 pm

looks like to much fuel if it was oil it would have a wet look not the flat smut look
avatar
69F100
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 5148
Join date : 2009-01-04
Age : 51
Location : Irwinville Ga.

View user profile

Back to top Go down

Re: Spark plugs black

Post  richter69 on October 5th 2013, 12:05 am

looks rich as hell and or too cold a plug.
avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: Spark plugs black

Post  tconnection on October 5th 2013, 12:23 am

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.

tconnection

Posts : 847
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: Spark plugs black

Post  fatal addiction on October 5th 2013, 7:35 am

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

Posts : 433
Join date : 2010-03-01

View user profile

Back to top Go down

Re: Spark plugs black

Post  kim on October 5th 2013, 8:13 am

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.

kim

Posts : 700
Join date : 2009-06-27
Location : Tucson AZ

View user profile

Back to top Go down

Re: Spark plugs black

Post  richter69 on October 5th 2013, 9:43 am

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.
avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: Spark plugs black

Post  cool40 on October 5th 2013, 11:03 am

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.
avatar
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7168
Join date : 2009-08-31
Age : 47
Location : on the 1/8 mile dyno

View user profile

Back to top Go down

Re: Spark plugs black

Post  QtrWarrior on October 5th 2013, 12:12 pm

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...
avatar
QtrWarrior

Posts : 2562
Join date : 2008-12-02
Age : 59
Location : Bloomingdale, Ga

View user profile

Back to top Go down

Re: Spark plugs black

Post  Lem Evans on October 5th 2013, 12:21 pm

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

Lem Evans

Posts : 7148
Join date : 2008-12-03
Location : Livermore , Ky

View user profile http://bfevansraceparts.com

Back to top Go down

Re: Spark plugs black

Post  richter69 on October 5th 2013, 4:31 pm

I concur........
avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: Spark plugs black

Post  res0rli9 on October 5th 2013, 8:33 pm

and do a 651 burn out

res0rli9
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 3338
Join date : 2008-12-02
Age : 68
Location : sarasota FL.

View user profile

Back to top Go down

Re: Spark plugs black

Post  richter69 on October 5th 2013, 10:10 pm

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

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: Spark plugs black

Post  tconnection on October 5th 2013, 10:43 pm

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


Last edited by tconnection on October 5th 2013, 10:49 pm; edited 1 time in total

tconnection

Posts : 847
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: Spark plugs black

Post  cool40 on October 5th 2013, 10:48 pm

black smoke=fuel....blue=oil...white=water Suspect
avatar
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7168
Join date : 2009-08-31
Age : 47
Location : on the 1/8 mile dyno

View user profile

Back to top Go down

Re: Spark plugs black

Post  tconnection on October 5th 2013, 10:59 pm

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

tconnection

Posts : 847
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: Spark plugs black

Post  69F100 on October 5th 2013, 11:06 pm

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
avatar
69F100
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 5148
Join date : 2009-01-04
Age : 51
Location : Irwinville Ga.

View user profile

Back to top Go down

Re: Spark plugs black

Post  tconnection on October 5th 2013, 11:48 pm

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

tconnection

Posts : 847
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: Spark plugs black

Post  bbf-falcon on October 6th 2013, 6:28 pm

richter69 wrote:use of the 651 out of context makes one look foolish........
Damn Jon,don't be so hard on yourself.Laughing 

bbf-falcon

Posts : 8992
Join date : 2008-12-03
Location : Jackson, Ohio

View user profile

Back to top Go down

Re: Spark plugs black

Post  tconnection on October 6th 2013, 9:10 pm

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

tconnection

Posts : 847
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: Spark plugs black

Post  69F100 on October 7th 2013, 11:33 am

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.
avatar
69F100
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 5148
Join date : 2009-01-04
Age : 51
Location : Irwinville Ga.

View user profile

Back to top Go down

Re: Spark plugs black

Post  tconnection on February 14th 2015, 10:51 pm

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?
Thanks

tconnection

Posts : 847
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: Spark plugs black

Post  tconnection on February 14th 2015, 11:11 pm

Could it possibly be one of the ventures or barrels on that side acting up?
Thanks

tconnection

Posts : 847
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Page 1 of 2 1, 2  Next

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum