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Topic: Carburetor

in Forum: C3 Engines

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Carburetor (1/8)
4/27/11 11:51am

Tex
Former Member
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Kennebunkport, ME - USA

Vette(s):
1981

Joined: 1/5/2009
Posts: 11

Hi All,

My 81 started running rough and missing. The choke light stays on and the engine temp seems to be a bit cold, maybe 180 or so.

Think it is a carburetor problem?

Thanks,

Tex

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Carburetor (2/8)
4/27/11 12:03pm

rraider1
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1165

I wish I new more, and I sure someone will add info but it seems you have a engine temp sensor keeping the choke light on. The thermostat should make the engine go to at least 190 maybe it could be stuck open?

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Carburetor (3/8)
4/27/11 12:28pm

Tex
Former Member
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Kennebunkport, ME - USA

Vette(s):
1981

Joined: 1/5/2009
Posts: 11

Will have the mechanic check it out. Appreciate your input.

Tex

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Carburetor (4/8)
4/27/11 1:08pm

rraider1
Former Member
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1165

keep hope someone more familiar with the 81 setup might have some checks you can make, you might take a look at the wires at your sensors and the acual choke on the carb just to make sure nothing has come loose. Not sure but I think i read the choke light comes on if the electric choke coil is open. I have a 77 not much on them most all of my stock stuff is gone just eldbrock and manifold simple electrick choke. hopefully more help to follow

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Carburetor (5/8)
4/27/11 1:14pm

Adams' Apple

Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 20128

The choke light can come on for several reasons...not just because of a choke issue, tho it is definitely worth looking at first. The wire for the choke should have 12v on it with the key on...check that first. If no voltage, check fuses. I'm not 100% certain, but I think the same fuse is used for the radio, but it might not be...check all of them anyway.
Could be the choke is not opening all the way, which would cause the rough running issues....

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Joel Adams
C3VR Lifetime Member #56
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

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Carburetor (6/8)
4/27/11 2:24pm

Tex
Former Member
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Kennebunkport, ME - USA

Vette(s):
1981

Joined: 1/5/2009
Posts: 11

Appreciate the troubleshooting tips.

Tex

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Carburetor (7/8)
4/27/11 5:52pm

Adams' Apple

Also, the choke light could come on if there is an issue with the alternator...believe it or not....

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Carburetor (8/8)
4/27/11 11:01pm

kstyer

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CUYAHOGA FALLS, OH - USA

Vette(s):
1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

Joined: 12/2/2003
Posts: 6424

Or a blown insturment /gauge fuse

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