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Oil in Carb? #2836003
10/22/20 09:18 AM
10/22/20 09:18 AM
Joined: Jun 2005
Posts: 1,495
Florida
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CHRGR69 Offline OP
pro stock
CHRGR69  Offline OP
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Joined: Jun 2005
Posts: 1,495
Florida
While tearing down my carb for a rebuild, I notice what appears to be oil. Not a lot, but very sticky/tacky and dark brown. This carb sat for over 5 years from the last start up with ethanol gas.


Grandma always said I had "hands of gold"!
Re: Oil in Carb? [Re: CHRGR69] #2836032
10/22/20 10:26 AM
10/22/20 10:26 AM
Joined: Nov 2003
Posts: 35,842
Lincoln Nebraska
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RapidRobert Offline
Circle Track
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Posts: 35,842
Lincoln Nebraska
ethanol causes alot of problems even in a DD


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Re: Oil in Carb? [Re: RapidRobert] #2836038
10/22/20 10:36 AM
10/22/20 10:36 AM
Joined: Jun 2014
Posts: 604
VA
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dragon slayer Offline
mopar
dragon slayer  Offline
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Posts: 604
VA
Don't believe it is oil, but a varnish residue from the old gas.

Re: Oil in Carb? [Re: CHRGR69] #2836043
10/22/20 10:41 AM
10/22/20 10:41 AM
Joined: May 2011
Posts: 4,108
northern,Ohio,USA
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Clanton Offline
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northern,Ohio,USA
This could be reversion and maybe a valley pan leak


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Re: Oil in Carb? [Re: Clanton] #2836047
10/22/20 10:48 AM
10/22/20 10:48 AM
Joined: May 2019
Posts: 1,733
nowhere
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Sniper Offline
top fuel
Sniper  Offline
top fuel
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Joined: May 2019
Posts: 1,733
nowhere
Could be from the PCV circuit, but based on the sticky comment I'd think gas myself. What's it smell like?

Re: Oil in Carb? [Re: Sniper] #2836055
10/22/20 11:11 AM
10/22/20 11:11 AM
Joined: Jun 2005
Posts: 1,495
Florida
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CHRGR69 Offline OP
pro stock
CHRGR69  Offline OP
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Joined: Jun 2005
Posts: 1,495
Florida
More gas/varnish than anything else


Grandma always said I had "hands of gold"!
Re: Oil in Carb? [Re: CHRGR69] #2836083
10/22/20 12:15 PM
10/22/20 12:15 PM
Joined: Jan 2003
Posts: 6,069
Benton, IL.
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DaveRS23 Offline
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DaveRS23  Offline
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Benton, IL.
In the float bowl? If so, it would seem hard for engine oil to end up there on a running engine. Besides, I have seen that kind of varnish/residue before in carbs that have sat with fuel in them. Top end cleaner is about the best stuff I have found to clean up that mess. Sometimes it's called de-carbon, sometimes even tune-up-in-a-can. But it is the only stuff that my outboard service schools would recommend for carb cleaning and it is still the only thing I use on carbs. No carburetor cleaner, it's just too harsh.


KOS
Re: Oil in Carb? [Re: DaveRS23] #2836086
10/22/20 12:21 PM
10/22/20 12:21 PM
Joined: Sep 2003
Posts: 13,498
north of coder
moparx Offline
"Butt Crack Bob"
moparx  Offline
"Butt Crack Bob"

Joined: Sep 2003
Posts: 13,498
north of coder
in the float bowls, it's varnish/residue from the old gas.
looking down through the venturi's, it more than likely is a combination of gas residue and reversion particles.
beer

Re: Oil in Carb? [Re: CHRGR69] #2836127
10/22/20 01:48 PM
10/22/20 01:48 PM
Joined: Aug 2003
Posts: 35,914
Bend,OR USA
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Cab_Burge Offline
I Win
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Joined: Aug 2003
Posts: 35,914
Bend,OR USA
Is this in the throttle bores and venturi or inside the fuel bowls ?


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)






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