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1976 Chevy Corvette misfire

Tiny
WCOOL
  • MEMBER
  • 1976 CHEVROLET CORVETTE
  • V8
  • 2WD
  • AUTOMATIC
  • 68,000 MILES
I have a problem with my Corvette missing at about 55 mph, just wondering could it be a bad EGR Valve or plugs and plug wires, it only has around 9,000 mile on the plugs and wires

Thanks
Thursday, March 19th, 2009 AT 12:44 PM

6 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
EGR not likely but plugs, wires and coil all good possibilities. No miss under acceleration?
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Thursday, March 19th, 2009 AT 12:57 PM
Tiny
WCOOL
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  • 3 POSTS
It seems to misfire or surge from 55 to 70 mph
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Thursday, March 19th, 2009 AT 1:07 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Do you have points dist? If so check dwell 30 deg. Also make sure centrifugal advance weights are free and apply vacuum in advance see if it moves and holds
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Thursday, March 19th, 2009 AT 1:11 PM
Tiny
WCOOL
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  • 3 POSTS
I have a HEI distributor no points
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Thursday, March 19th, 2009 AT 1:24 PM
Tiny
DOCFIXIT
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  • 18,828 POSTS
Same check the weights under rotor and apply vac to advance
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Thursday, March 19th, 2009 AT 1:27 PM
Tiny
BOGONE
  • MEMBER
  • 8 POSTS
Check the coil, plug wires, and rotor. The rotors on gm hei ignitions system are know to fail. It arcs thru the rotor into the distributor shaft. But I bet its the plug wires.
Charlie
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Thursday, March 19th, 2009 AT 1:37 PM

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