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Re: Going back up to high idling speed (2/12)
 1/27/19 2:20am
73shark
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.


Joined: 7/9/2003
Posts: 565

Something in the choke pulloff mechanism is not working properly. Could be the choke stove. Everything should be free and slightly loose.

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1973 L-82 4 spd

Re: Going back up to high idling speed (3/12)
 1/27/19 11:37am
Adams' AppleLifetime 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: 19658

It's possible the throttle blade shaft is gummy, or the blades themselves. Might be time for a good cleaning on the carb, assuming there is no issues with the choke. I have seen many times the secondary throttle blades not returning to closed position due to stickiness. 

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Joel Adams
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Re: Going back up to high idling speed (4/12)
 1/27/19 12:40pm
Christian
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Houston, TX - USA

Vette(s):
1971 LS5 Convertible 4 sp


Joined: 2/25/2003
Posts: 178

Forgot to mention that the carburetor was just entirely taken apart, thoroughly cleaned and professionally tuned. The engine runs really smooth, idles nicely (when idling)and I feel I got all the power back.
This is the only issue I have with it.
Re: Going back up to high idling speed (5/12)
 1/27/19 2:24pm
73shark
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.


Joined: 7/9/2003
Posts: 565

Sounds like it's time to take it back to the place that professionally rebuilt it and ask them what's wrong.

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1973 L-82 4 spd

Re: Going back up to high idling speed (6/12)
 1/27/19 7:50pm
Adams' AppleLifetime 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: 19658

It's also possible the throttle blades might be hanging on the carb base plate gasket...seen that many times too, with kit gaskets.

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Joel Adams
C3VR Lifetime Member #56    

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             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Re: Going back up to high idling speed (7/12)
 1/27/19 8:08pm
Christian
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Houston, TX - USA

Vette(s):
1971 LS5 Convertible 4 sp


Joined: 2/25/2003
Posts: 178

OK. Apparently, that was nothing more than the cable sticking in its sleeve. I tried to inject WD40 in it, from the carb end, and it looks like it works now. Will see.
Re: Going back up to high idling speed (8/12)
 1/27/19 8:29pm
73shark
Standard Member
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.


Joined: 7/9/2003
Posts: 565

If the WD-40 doesn't work, try silicon the next time and it won't attract any type of dirt.

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1973 L-82 4 spd

Re: Going back up to high idling speed (9/12)
 1/27/19 9:04pm
Christian
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Houston, TX - USA

Vette(s):
1971 LS5 Convertible 4 sp


Joined: 2/25/2003
Posts: 178

Good idea. Thanks!
Re: Going back up to high idling speed (10/12)
 2/1/19 9:23pm
Wally71Gold Member
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Palos Heights, IL - USA

Vette(s):
1971 LT 1 4spd Coupe numbers matching #s114893


Joined: 2/8/2013
Posts: 12

I found that my problem with high idle speeds on my 71 Lt1 was sticking flyweights in the
distributor. After we cleaned and reset the dist. it ran fine.
Wally71


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Re: Going back up to high idling speed (11/12)
 2/16/19 7:58pm
Christian
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Houston, TX - USA

Vette(s):
1971 LS5 Convertible 4 sp


Joined: 2/25/2003
Posts: 178

OK. I did my best to trickle as much silicone in the cable sleeve. It works better but not there yet. With a plier, I bent one end of the spring, by the carb, to add tension. More silicone in the cable. Better but not there yet. making progress.
I wonder if the resistance does come from the carburetor itself.
Re: Going back up to high idling speed (12/12)
 2/16/19 8:24pm
73shark
Standard Member
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.


Joined: 7/9/2003
Posts: 565

Christian said:I wonder if the resistance does come from the carburetor itself. You can check that by disconnecting the cable from the carburetor and seeing if it idles normally.

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1973 L-82 4 spd