1977 Cadillac Seville engine misfire

1977 CADILLAC SEVILLE
70,100 MILES • V8 • 2WD • AUTOMATIC
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JIMBO1430
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  • 1 POST
#2578 cly will not fire, vac hose have been checked and pinched off, intake and carb have been tighten, light oil sprayed between intake and cly head. dist cap and wires checked and rechecked
Nov 21, 2009 at 12:35 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Nov 21, 2009 at 2:53 PM
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