leaking gasket on carb? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jeremy_5 · 06-07-2004, 10:19 PM

Recently I have noticed gasoline stains on my carb, I was wondering if this could be from a leaky gasket or improperly torqued bolts?

jhow66 · 06-08-2004, 12:09 AM

What kind of carb?

Jeremy_5 · 06-09-2004, 01:08 AM

4 barell quadrajet

jhow66 · 06-09-2004, 01:16 AM

Try tighting all the bowl screws. Just stains or is there gas on manifold?

Jeremy_5 · 06-09-2004, 03:07 PM

it just looks like stains on the carb, no gas on the manifold, but it is leaking somewhere.

jhow66 · 06-09-2004, 03:42 PM

Normal condition --after a period of time gas will wick thru gaskets,pump rod hole, mist from pump squritor etc. Take a little carb cleaner and spray it every so often if you want it to stay clean.

Jeremy_5 · 06-09-2004, 05:05 PM

thanks for your help, do I just spray the carb cleaner down the throat?

jhow66 · 06-09-2004, 08:41 PM

No-just spray the outside to keep it clean.(will not hurt the inside to spray it though)

71-longbed · 06-10-2004, 01:49 AM

i've always wondered about that ... if you spray'd carb cleaner down the primary barrel ... are you simply washing gunk down and around you float needle ... i've heard of guys removing the idle mixture screws and spraying it around through there .... i guess my question is .. Can you do more harm then good with carb cleaner ????

67chevemall · 06-10-2004, 09:09 AM

I'd say it depends on the time and method it is applied.
To spray a whole can down the throat of a cold, not running engine would be a bad idea! To spay a little down a hot running engine would be opposite.
Ect....

Personally I just clean the outside of the carb. If you need to spray it out inside to make it run better it is probally something else. I would rebuild the carb.

06-07-2004, 10:19 PM	#1
Jeremy_5 Truck addict Join Date: Sep 2003 Location: Lincoln, California Posts: 497	leaking gasket on carb? Recently I have noticed gasoline stains on my carb, I was wondering if this could be from a leaky gasket or improperly torqued bolts? __________________ 1956 Chevy Napco 1972 Cheyenne Super 1970 K20

06-08-2004, 12:09 AM	#2
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	What kind of carb? __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

06-09-2004, 01:08 AM	#3
Jeremy_5 Truck addict Join Date: Sep 2003 Location: Lincoln, California Posts: 497	4 barell quadrajet __________________ 1956 Chevy Napco 1972 Cheyenne Super 1970 K20

06-09-2004, 01:16 AM	#4
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Try tighting all the bowl screws. Just stains or is there gas on manifold? __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

06-09-2004, 03:07 PM	#5
Jeremy_5 Truck addict Join Date: Sep 2003 Location: Lincoln, California Posts: 497	it just looks like stains on the carb, no gas on the manifold, but it is leaking somewhere. __________________ 1956 Chevy Napco 1972 Cheyenne Super 1970 K20

06-09-2004, 03:42 PM	#6
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Normal condition --after a period of time gas will wick thru gaskets,pump rod hole, mist from pump squritor etc. Take a little carb cleaner and spray it every so often if you want it to stay clean. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

06-09-2004, 05:05 PM	#7
Jeremy_5 Truck addict Join Date: Sep 2003 Location: Lincoln, California Posts: 497	thanks for your help, do I just spray the carb cleaner down the throat? __________________ 1956 Chevy Napco 1972 Cheyenne Super 1970 K20

06-09-2004, 08:41 PM	#8
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	No-just spray the outside to keep it clean.(will not hurt the inside to spray it though) __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

06-10-2004, 01:49 AM	#9
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	i've always wondered about that ... if you spray'd carb cleaner down the primary barrel ... are you simply washing gunk down and around you float needle ... i've heard of guys removing the idle mixture screws and spraying it around through there .... i guess my question is .. Can you do more harm then good with carb cleaner ???? __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

06-10-2004, 09:09 AM	#10
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	I'd say it depends on the time and method it is applied. To spray a whole can down the throat of a cold, not running engine would be a bad idea! To spay a little down a hot running engine would be opposite. Ect.... Personally I just clean the outside of the carb. If you need to spray it out inside to make it run better it is probally something else. I would rebuild the carb. __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

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