Topic: Engine run on
in Forum: C3 Engines
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Lifetime MemberSHOHOLA, PA - USA
Joined: 8/31/2004
Posts: 67
Vette(s): 1978 Dark Brown coupe auto
1977 White coupe auto
1974 Dark Green coupe man
1969 Yellow coupe man
1994 blue coupe 6spd
Hi all,
I seem to be getting a run on problem after shuting the key off, timing problem maybe?
thanks
pete kennedy
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Lifetime MemberModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
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
Could be. Is it idled too high? That could make it do that. Also, a vaccuum leak, too hot a plug (heat range), any of these could cause this problem. Try twistin' the dist. back just a hair and see if that solves it. If nothin' else, just keep drivin', and don't turn it off!! 
Usually, if the timming is too fat, it makes it hard to start when it's hot ('kick back'). If it's too retarded, it don't run too well. I'd look for a vac. leak, and make sure the carb is fully closing @ idle.
Usually, if the timming is too fat, it makes it hard to start when it's hot ('kick back'). If it's too retarded, it don't run too well. I'd look for a vac. leak, and make sure the carb is fully closing @ idle.Joel Adams
C3VR Lifetime Member #56 
My Link 
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
The main causes
Throttle open too far. Either fast idle or vac leak
Engine too hot. Cooling system, EGR, t-stat, fan
Timing too far advanced.
Carbon deposits in the engine.
One of these will tie into or more likely be the direct cause.
in Forum: C3 Engines
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