Valve color question

BAD BOB · 08-17-2009, 08:10 PM

what does it mean when your exhaust valve is really white? i always thought of it to be running clean.. How bout it?

Mike · 08-17-2009, 08:17 PM

might be a head gasket problem?

I ain't no good mechanic, so it's just a guess.

BAD BOB · 08-17-2009, 08:19 PM

fresh gaskets, and all the valves are like that and the same exact color

05Saleen · 08-17-2009, 08:25 PM

What does your plugs look like? White is usually a lean condition. White/Tan is perfect on the plugs. Black is usually a rich condition.....Plugs that is.

Harry · 08-17-2009, 08:48 PM

I agree. White is usually a lean condition.

slowgreen99 · 08-17-2009, 08:53 PM

who cares just shoot more to it

WWhittle · 08-17-2009, 08:57 PM

Just white?? or a white buildup?

BAD BOB · 08-17-2009, 09:00 PM

plugs look new kind of. i didnt scrap the valve to see if its buildup but its just the exhaust valve. everything else looks good. wideband never got over 13 under load

Robert Holton · 08-17-2009, 09:01 PM

yea thats a good question wes...

Robert Holton · 08-17-2009, 09:04 PM

if its just white sounds to me its burning clean...

BAD BOB · 08-17-2009, 09:04 PM

i dont see it being build up i can see the shape of the valve and all

WWhittle · 08-17-2009, 09:06 PM

Then i wouldn't worry about it

Robert Holton · 08-17-2009, 09:08 PM

sounds like u got a good tune up...whats the reason for looking?

BAD BOB · 08-17-2009, 09:11 PM

just checking to see if the 300 shot was hurting anything

Robert Holton · 08-17-2009, 09:14 PM

o better check the rings if you was to check anything...

BAD BOB · 08-17-2009, 09:15 PM

no i checked leakdown and it all seems well just checking the tune since it is a stock engine

WWhittle · 08-17-2009, 09:19 PM

It can be alot of things.....running lean and hot would be one of them, but you say you are monitoring A/F.

Heat range on your plugs could be wrong though.

Chances are that they are just right and you are just now noticing that they are that color.

It can also be something as dumb as an additive in the fuels you are running.

Make sure your A/F is good and that your heat range on your plugs are right and don't worry about it.

BAD BOB · 08-17-2009, 09:26 PM

I run plain 93 gas and i dont know what the plugs are so i will check that but they look brand new and aint real white at all. and like i said the a/f stays around 13 at the highest under load. screw it the worst that will happen is that something melts then i will know if i have a problem

slowgreen99 · 08-17-2009, 09:28 PM

Quote:

Originally Posted by BAD BOB

I run plain 93 gas and i dont know what the plugs are so i will check that but they look brand new and aint real white at all. and like i said the a/f stays around 13 at the highest under load. screw it the worst that will happen is that something melts then i will know if i have a problem

chrisheltra · 08-17-2009, 09:30 PM

You running a 300 shot on the moped? Dayum! lol

08-17-2009, 08:10 PM	#1
BAD BOB Senior Member Join Date: Mar 2008 Location: SUMMERVILLE Posts: 3,681	Valve color question what does it mean when your exhaust valve is really white? i always thought of it to be running clean.. How bout it? __________________ IM BAD BOB

08-17-2009, 08:19 PM	#3
BAD BOB Senior Member Join Date: Mar 2008 Location: SUMMERVILLE Posts: 3,681	fresh gaskets, and all the valves are like that and the same exact color __________________ IM BAD BOB

08-17-2009, 08:25 PM	#4
05Saleen Senior Member Join Date: Dec 2006 Location: Goose Creek, SC Posts: 3,159	What does your plugs look like? White is usually a lean condition. White/Tan is perfect on the plugs. Black is usually a rich condition.....Plugs that is. __________________ 05 Saleen, 91 Mustang LX, 99 Lightning

08-17-2009, 08:53 PM	#6
slowgreen99 Senior Member Join Date: Jan 2008 Location: Summerville Posts: 7,740	who cares just shoot more to it __________________ M.R.E. Bad Bob Motorsports

08-17-2009, 09:00 PM	#8
BAD BOB Senior Member Join Date: Mar 2008 Location: SUMMERVILLE Posts: 3,681	plugs look new kind of. i didnt scrap the valve to see if its buildup but its just the exhaust valve. everything else looks good. wideband never got over 13 under load __________________ IM BAD BOB

08-17-2009, 08:17 PM	#2
Mike Senior Member Join Date: Dec 2006 Location: Goose Creek, SC Posts: 5,481	might be a head gasket problem? I ain't no good mechanic, so it's just a guess.

08-17-2009, 08:48 PM	#5
Harry Senior Member Join Date: May 2008 Location: Summerville Posts: 3,321	I agree. White is usually a lean condition.

08-17-2009, 08:57 PM	#7
WWhittle Senior Member Join Date: Apr 2008 Location: Mt. Pleasant, SC Posts: 3,899	Just white?? or a white buildup?

08-17-2009, 09:01 PM	#9
Robert Holton Senior Member Join Date: Jul 2008 Posts: 978	yea thats a good question wes... __________________ SHOWBOATIN FROM COAST TO COAST

08-17-2009, 09:04 PM	#10
Robert Holton Senior Member Join Date: Jul 2008 Posts: 978	if its just white sounds to me its burning clean... __________________ SHOWBOATIN FROM COAST TO COAST

08-17-2009, 09:06 PM	#12
WWhittle Senior Member Join Date: Apr 2008 Location: Mt. Pleasant, SC Posts: 3,899	Then i wouldn't worry about it

08-17-2009, 09:08 PM	#13
Robert Holton Senior Member Join Date: Jul 2008 Posts: 978	sounds like u got a good tune up...whats the reason for looking? __________________ SHOWBOATIN FROM COAST TO COAST

08-17-2009, 09:11 PM	#14
BAD BOB Senior Member Join Date: Mar 2008 Location: SUMMERVILLE Posts: 3,681	just checking to see if the 300 shot was hurting anything __________________ IM BAD BOB

08-17-2009, 09:14 PM	#15
Robert Holton Senior Member Join Date: Jul 2008 Posts: 978	o better check the rings if you was to check anything... __________________ SHOWBOATIN FROM COAST TO COAST

08-17-2009, 09:15 PM	#16
BAD BOB Senior Member Join Date: Mar 2008 Location: SUMMERVILLE Posts: 3,681	no i checked leakdown and it all seems well just checking the tune since it is a stock engine __________________ IM BAD BOB

08-17-2009, 09:19 PM	#17
WWhittle Senior Member Join Date: Apr 2008 Location: Mt. Pleasant, SC Posts: 3,899	It can be alot of things.....running lean and hot would be one of them, but you say you are monitoring A/F. Heat range on your plugs could be wrong though. Chances are that they are just right and you are just now noticing that they are that color. It can also be something as dumb as an additive in the fuels you are running. Make sure your A/F is good and that your heat range on your plugs are right and don't worry about it.

08-17-2009, 09:26 PM	#18
BAD BOB Senior Member Join Date: Mar 2008 Location: SUMMERVILLE Posts: 3,681	I run plain 93 gas and i dont know what the plugs are so i will check that but they look brand new and aint real white at all. and like i said the a/f stays around 13 at the highest under load. screw it the worst that will happen is that something melts then i will know if i have a problem __________________ IM BAD BOB

08-17-2009, 09:30 PM	#20
chrisheltra Neo is Jesus Join Date: Jan 2007 Posts: 13,265	You running a 300 shot on the moped? Dayum! lol __________________ Gap A Hoe Racing