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1977 Chevrolet El Camino engine problem

Tiny
ROBBONNER
  • MEMBER
  • 1977 CHEVROLET EL CAMINO
  • 155,000 MILES
I was driving in traffic on the freeway and when I exited the car started smoking black smoke and running so rough I had to keep the idle up so it wouldnt stall. I havent done anything to it since then but about a month ago I replaced the qaud carb with a rebuilt, same as was on there. Also replaced the starter and flywheel, tires and battery. I could really use some answers. Thank you
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Friday, June 21st, 2013 AT 8:16 PM

5 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
I feel hat this will be a carby problem, may be the needle and seat is stuck open and causing it to be well over rich, start here.
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Friday, June 21st, 2013 AT 9:03 PM
Tiny
ROBBONNER
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OK Thank you very much. There was a problem when the carb was first installed, it was the auto choke. Just cuz its new or rebuilt doesn't guarantee its good, thats for sure. I was also thinking maybe the catalytic converter?
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Saturday, June 22nd, 2013 AT 2:40 AM
Tiny
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Doubt that it is the cat, more like over rich due to a problem in the carby, also make sure that the fuel pressure is not to high.
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Saturday, June 22nd, 2013 AT 4:42 PM
Tiny
ROBBONNER
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Thanks again
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Sunday, June 23rd, 2013 AT 7:19 AM
Tiny
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Ok
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Sunday, June 23rd, 2013 AT 1:59 PM

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