The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-04-2008, 10:37 PM   #1
JayDubBlazer
go cyclones
 
JayDubBlazer's Avatar
 
Join Date: Jun 2003
Location: Ames, IA
Posts: 1,883
What is this powder on my carb?

Guys I am putting my truck back together and I found this powder in the carb. What is it? As you can see from the picture it is bright yellow, I had a PVC valve running from my valve cover to that port.

Thanks
Attached Images
 
__________________
Wes



PROJECT OLE GREEN

1972 Blazer 4X4 350/700R4
2017 Silverado LT
JayDubBlazer is offline   Reply With Quote
Old 06-04-2008, 11:39 PM   #2
chevy72blu
Registered User
 
chevy72blu's Avatar
 
Join Date: Apr 2004
Location: Las Vegas, NV
Posts: 2,188
Re: What is this powder on my carb?

Quote:
Originally Posted by JayDubBlazer View Post
Guys I am putting my truck back together and I found this powder in the carb. What is it? As you can see from the picture it is bright yellow, I had a PVC valve running from my valve cover to that port.

Thanks


Im waiting for an answer on this one
__________________
RIP EastSideLowLife

'72 C20 SWB convert. 5 lug, LS1/4l60e
chevy72blu is offline   Reply With Quote
Old 06-04-2008, 11:42 PM   #3
Brad
Out of the carpool lane.
 
Brad's Avatar
 
Join Date: Jan 2000
Location: Clark Co, WA
Posts: 5,672
Re: What is this powder on my carb?

Gold. Isn't that what you're putting in your fuel tank nowdays?
__________________

1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red
1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!)
2000 Honda VFR in the faster yellow!
2008 Husqvarna TE-610

1967 C-10 SWB 'Six Appeal'-Gone but not forgotten...

Brad is offline   Reply With Quote
Old 06-05-2008, 12:12 AM   #4
berencam
Registered User
 
berencam's Avatar
 
Join Date: Aug 2007
Location: branson mo
Posts: 933
Re: What is this powder on my carb?

It looks like sulfur, but i have no idea why sulfur would be in there. Does the powder smell bad?
__________________
69 chevy c10 350 3 speed manual wood bed build thread here r.i.p.
70 c10 auto 350 build here
berencam is offline   Reply With Quote
Old 06-05-2008, 11:31 AM   #5
Putter
More Cowbell....
 
Putter's Avatar
 
Join Date: Mar 2004
Location: Puckett, MS
Posts: 3,569
Re: What is this powder on my carb?

Quote:
Originally Posted by berencam View Post
Does the powder smell bad?
Holy crap, don't sniff that stuff. Put it in baggies and sell it to the local junkies.
Looks like something the 'ricers' would do. Add yellow powder-coating powder to produce a cool yellow fog when they launch away from that '30-something-year-old-junk-pile-you-call-a-truck'


But I do agree with everyone else. That sure looks like yellow powder.
__________________
There once was a member from Puckett.....Who ( fill in the blank blank blank ) bucket

Last edited by Putter; 06-05-2008 at 11:33 AM.
Putter is offline   Reply With Quote
Old 06-05-2008, 12:20 AM   #6
Jerry Jones
Happy Camper
 
Jerry Jones's Avatar
 
Join Date: Feb 2006
Location: Northern California
Posts: 8,407
Re: What is this powder on my carb?

Ummm? I want to know too!
__________________
RIP El Jay! Love you brother!
Jerry Jones is offline   Reply With Quote
Old 06-05-2008, 12:32 AM   #7
ETsC10
Hand Crafted C-10
 
ETsC10's Avatar
 
Join Date: Aug 2006
Location: Burien, WA
Posts: 5,180
Re: What is this powder on my carb?

DanvilleGold? Don't get pulled over!
ETsC10 is offline   Reply With Quote
Old 06-05-2008, 01:31 AM   #8
67shortie
Green club
 
67shortie's Avatar
 
Join Date: May 2002
Location: Central CA
Posts: 1,059
Re: What is this powder on my carb?

Humm, looks like an additive in the oil coming back as a powder.

Or sulpher, what kind of oil are you using?

Never have seen that one......
__________________
71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears
70 SS396 Chevelle 427/200-4R/3.73posi
61 Lincoln Continental, black on black

Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln
67shortie is offline   Reply With Quote
Old 06-05-2008, 01:31 AM   #9
HoupPhotography
Registered User
 
Join Date: Feb 2008
Location: Phoenix, Az
Posts: 1,204
Re: What is this powder on my carb?

Is it a new carb? Did it come out of the box that way or did it appear from the carb sitting around? Was it near anything that could of leaked into the carb and dried to create that powder? Electrolysis? What does the PCV valve look like?

Curious though, how\what could create sulphur?
__________________
R.I.P. Scott Kalitta

Last edited by HoupPhotography; 06-05-2008 at 01:32 AM.
HoupPhotography is offline   Reply With Quote
Old 06-05-2008, 01:38 AM   #10
beautimus
Registered User
 
beautimus's Avatar
 
Join Date: Mar 2002
Location: woodstock, alabama, usa
Posts: 938
Re: What is this powder on my carb?

"Curious though, how\what could create sulphur?"
aren't there sulphates in the fuel?
__________________
i survived cancer and kidney stones, but my kids are killing me.
beautimus is offline   Reply With Quote
Old 06-05-2008, 07:00 AM   #11
caminokid
Chevy nut
 
caminokid's Avatar
 
Join Date: Jun 2007
Location: Springfield, Illinois
Posts: 2,266
Re: What is this powder on my carb?

Got me on this one guys. I am waiting to see if there is an answer on this one.
__________________
84 Chevy Custom Deluxe 1/2 Ton Named Fade To Black II


"Remember kids there is NO replacement for displacement!"
caminokid is offline   Reply With Quote
Old 06-05-2008, 07:47 AM   #12
JayDubBlazer
go cyclones
 
JayDubBlazer's Avatar
 
Join Date: Jun 2003
Location: Ames, IA
Posts: 1,883
Re: What is this powder on my carb?

It doesn't smell like sulfur, i didn't try the taste test . The only other thing I can think that did to is was ran it through the parts cleaner but again something had to be there in the first place to turn yellow.
__________________
Wes



PROJECT OLE GREEN

1972 Blazer 4X4 350/700R4
2017 Silverado LT
JayDubBlazer is offline   Reply With Quote
Old 06-05-2008, 07:58 AM   #13
c10addict
Registered User
 
c10addict's Avatar
 
Join Date: Aug 2007
Location: pittsburgh pa
Posts: 1,970
Re: What is this powder on my carb?

How long have you owned the truck?? To me it looks like a tracer dye.. it is made to put in the oil to pin point the source of leaks... They also make it for A/C systems and other fluids as well... Normally you have to use a UV light to see it but that is not always true.. Good luck... Then again have you ever seen Ghostbusters??
Attached Images
 
__________________
68 C10 Shorty TPI,Bagged, and all the good stuff. Classic trucks feature June 06, On the cover of Jegs Christmas Catalog 08
67 C10 Shorty Shop truck project Bagged and Z'd under destruction and getting nowhere fast.
64 C10 Shop Truck/Daily driver, Bagged, Dropmember, SOLD!!!! Gone but not forgotten..
54 GMC under the knife getting a S10 chassis swap and bagged. See my build thread...
07 GMC Sierra 5/7 drop, 22's and 24's Air ride on my mind..
http://67-72chevytrucks.com/vboard/s...d.php?t=339340

See pics of my trucks in my profile
c10addict is offline   Reply With Quote
Old 06-05-2008, 08:02 AM   #14
JayDubBlazer
go cyclones
 
JayDubBlazer's Avatar
 
Join Date: Jun 2003
Location: Ames, IA
Posts: 1,883
Re: What is this powder on my carb?

I bought the carb new back in 2001, I will never forgot because I was putting my new engine in, skipping school and listening to the radio. It was Semptember 11. I probaly only have 5000 miles on the carb. If nothing else I will just clean it out really well and check it in 500-1000 miles again.
__________________
Wes



PROJECT OLE GREEN

1972 Blazer 4X4 350/700R4
2017 Silverado LT
JayDubBlazer is offline   Reply With Quote
Old 06-05-2008, 09:19 AM   #15
68gmsee
Active Member
 
68gmsee's Avatar
 
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
Re: What is this powder on my carb?

That sure looks like a lot of powder coming out of that tube!

When you pulled the hose off, did it pour from the hose or did you scoop it out of the carb vacuum port?

Something's not right. If that much contamination was coming from the oil and being sucked into the carb, you'd be able to detect it. Or, there would be black goo mixed in with it. It just looks too clean to have come from the engine.

I'd suspect carb internal contamination or fuel contamination...
68gmsee is offline   Reply With Quote
Old 06-05-2008, 10:56 AM   #16
ETsC10
Hand Crafted C-10
 
ETsC10's Avatar
 
Join Date: Aug 2006
Location: Burien, WA
Posts: 5,180
Re: What is this powder on my carb?

Quote:
Originally Posted by 68gmsee View Post
That sure looks like a lot of powder coming out of that tube!

When you pulled the hose off, did it pour from the hose or did you scoop it out of the carb vacuum port?

Something's not right. If that much contamination was coming from the oil and being sucked into the carb, you'd be able to detect it. Or, there would be black goo mixed in with it. It just looks too clean to have come from the engine.

I'd suspect carb internal contamination or fuel contamination...
68gmsee, you just might have something there...fuel varnish deposits? Seems to me I've seen something similar on the back of valves.
ETsC10 is offline   Reply With Quote
Old 06-05-2008, 11:15 AM   #17
67ChevyRedneck
Hittin E-Z Street on Mud Tires
 
67ChevyRedneck's Avatar
 
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
Re: What is this powder on my carb?

Stop peeing in your gas tank, it won't increase your mpg.
__________________
Jesse James
1967 C10 SWB Stepside: 350/700R4/3.73
1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc
1968 Pontiac Firebird: Project Fire Chicken!
2015 Silverado Double Cab 5.3L Z71
2001 Jeep Wrangler Sport 4.0L 5spd
2020 Chevrolet Equinox Premium 2.0L Turbo
2011 Mustang V6 ~ Wife's ride
American Born, Country by the Grace of God
1967 CST Shop Truck Rebuild!
My 1967 C-10 Build Thread
My Vintage Air A/C Install
Project "On a Dime"
Trying my hand at Home Renovation!
1965 Mustang Modifications!
67ChevyRedneck is offline   Reply With Quote
Old 06-05-2008, 11:26 AM   #18
grayw0lf
Registered User
 
Join Date: Apr 2004
Location: Clanton, AL
Posts: 1,253
Re: What is this powder on my carb?

Quote:
Originally Posted by 67ChevyRedneck View Post
Stop peeing in your gas tank, it won't increase your mpg.
Thats b/c you are drinking store bought liqours. Try some AL white whiskey. You could piss on a cigarette & start a forest fire.
__________________
85' CUCV M1009!!! The newest addition!
6.2diesel, Th400, NP208, & only 36k miles!
70' C-10 LWB Fleetside - Looking good these days!
05' Dodge Neon
88' Winner Escape Sport 1750 - 4.3v6
94' Seadoo SP
84' Honda TRX200, bare nekkid. Just a frame & tires.

Always looking for another project or any good deal!

grayw0lf is offline   Reply With Quote
Old 06-05-2008, 11:32 AM   #19
LockDoc
The Older Generation


 
LockDoc's Avatar
 
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,774
Re: What is this powder on my carb?

-
You don't have Honey Bees in there do you? It almost looks like bee pollen....

LockDoc
__________________
Leon

Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles

(My Dually Pickup Project Thread)

http://67-72chevytrucks.com/vboard/s...d.php?t=829820

-
LockDoc is offline   Reply With Quote
Old 06-05-2008, 11:33 AM   #20
Ole Blue 68
Registered User
 
Ole Blue 68's Avatar
 
Join Date: Aug 2005
Location: Philly
Posts: 1,140
Re: What is this powder on my carb?

Definitely looks like sulphur.

If it was near the air filter, I'd say it might be pollen on a long shot but this is coming from the PCV so I don't know.
Ole Blue 68 is offline   Reply With Quote
Old 06-05-2008, 11:58 AM   #21
Bus Ted Knuckle
Son of a gun
 
Bus Ted Knuckle's Avatar
 
Join Date: Jan 2007
Location: Hot Springs, Arkansas
Posts: 1,636
Re: What is this powder on my carb?

I thought maybe a dirt dauber nest...but I've never seen one that color!

They do like to stop up round openings like that though.
__________________
Bill

BEATERS ARE NEATER
Bus Ted Knuckle is offline   Reply With Quote
Old 06-05-2008, 12:48 PM   #22
BLACK AND BLUE 67-72
Firefighter
 
BLACK AND BLUE 67-72's Avatar
 
Join Date: Feb 2001
Location: Yellville, Ar, USA
Posts: 1,943
Re: What is this powder on my carb?

I have seen fuel varnish deposits like that before, just not quite that much... Also have you had that carb for a while, or did you recently get it, reason I'm asking is because it looks like fire extinguisher powder also.
__________________
'72 Chevy SWB 350 Auto
'67 GMC LWB 350 4 speed
'70 Chevy 4x4 Stepside 350 Auto
Yellville, Ar. USA

BLACK AND BLUE 67-72 is offline   Reply With Quote
Old 06-05-2008, 01:20 PM   #23
jayharrell
Gettin By on Gettin By
 
jayharrell's Avatar
 
Join Date: Jan 2008
Location: Cedar Creek, Tx
Posts: 1,033
Re: What is this powder on my carb?

Its your truck giving you hints on new color choices for the outside. Looks like Corvette Yellow to me.

This is just weird. And i have no clue. But wanna know what it is.
__________________
69 CST10 LWB 455 Buick
00 S10 2.2 Vin5
76 GL1000 Naked 1bl VW carb

"Adios to all the concrete; Gonna get me some dirt road back streets"
jayharrell is offline   Reply With Quote
Old 06-05-2008, 01:48 PM   #24
OrangeCrush1970
Registered User
 
OrangeCrush1970's Avatar
 
Join Date: Jun 2007
Location: Smyrna, GA
Posts: 709
Re: What is this powder on my carb?

I did some looking around and the best that I can come up with is that it is oxidized metal. What type of fuel / additives are you running? It could be a byproduct of some fuel additive-

Or it could be the teacher who's class you were skipping to put that carb on playing a joke on you...
__________________
Rottenwood Garage


1970...71...72 C1500 aka Orange aka Sideshow Bob
540 BB Straub Roller Cam, AFR Magnums, XP 950, TKO 600
2 Tons of Fun
OrangeCrush1970 is offline   Reply With Quote
Old 06-05-2008, 02:47 PM   #25
fnoblitt
Registered User
 
fnoblitt's Avatar
 
Join Date: Mar 2002
Location: southern calif.,usa
Posts: 200
Red face Re: What is this powder on my carb?

if you think its coming from the pvc valve,then pull that valve cover and do some investagateing
__________________
70 c10 stepside ,350v8, m-20 4 speed
fnoblitt is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:51 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com