C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Violent Shudder

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Old Jun 13, 2005 | 09:59 AM
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I was driving my 69 427 yesterday. When I was driving around at about 1500-2000 in 2nd gear the car started to violently shudder back and forth. It happened at a constant speed, the car would slow down then jump forward. It was doing this over and over, it seemed to get worse as the car got warm. Then I had someone else drive it to see if they new what was causing it. Anyone know what this was caused by? Clutch? Misfire? Hesitation?
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Old Jun 13, 2005 | 05:46 PM
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Anyone?
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Old Jun 13, 2005 | 06:56 PM
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Originally Posted by matthud
I was driving my 69 427 yesterday. When I was driving around at about 1500-2000 in 2nd gear the car started to violently shudder back and forth. It happened at a constant speed, the car would slow down then jump forward. It was doing this over and over, it seemed to get worse as the car got warm. Then I had someone else drive it to see if they new what was causing it. Anyone know what this was caused by? Clutch? Misfire? Hesitation?
Check your choke operation and coil output, tonight, in the dark.... with the hood up engine running look for sparks around the dist. cap & wires.
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Old Jun 13, 2005 | 07:03 PM
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Check your fuel filter. Shocking what a dirty filter can do and very cheep to fix for good measure.
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Old Jun 13, 2005 | 09:06 PM
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Choke is new and working fine. Plug wires are new, no cracks, no arcing. Fuel filter is new also, just replaced the wrong qjet that was on there with the edelbrock replacement qjet. Checked timing tonight, seemed to be way to far advanced, so I fixed it, just got to dark to drive around to see if the problem disappeared.

Last edited by matthud; Jun 14, 2005 at 01:10 PM.
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Old Jun 14, 2005 | 01:10 PM
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Anyone else have any ideas?
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