1970 Buick Electra vacuum

1970 BUICK ELECTRA
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SILHOUETTE57
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Engine Performance problem
1970 Buick Electra V8 Two Wheel Drive Automatic lots miles

i bought the car 6 weeks ago and have replaced everything that fuels or sparks yet still rough idle that never quits light after light plus runs rough. i suspect an extternal vac leak but maybe there just hooked up wrong, is there somewhere to get a diagram of manifold lines for 1970 455 electra, it doesnt even look right...internal vac 19 off manifold
Apr 30, 2009 at 8:14 PM
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HMAC300
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I may have a vacuum diagram for that model but would need engine size, 2 or 4 bbl carb, and wheteher it's got a/c or not. Although it probably does lol. If you private message me with our email then i can copy it and send it to you via your regular email. YOur engine vacuum sounds about right at idle. You may have a bad spark plug or wire , ignition type of miss.......
Jan 10, 2010 at 3:10 PM