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1970 Buick Electra vacuum

Tiny
SILHOUETTE57
  • MEMBER
  • 1970 BUICK ELECTRA
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
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Thursday, April 30th, 2009 AT 8:14 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
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.
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Sunday, January 10th, 2010 AT 3:10 PM

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