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1998 CHEVY BLAZER LT EXHAUST SMELLS LIKE FUEL RUNNS ROUGH

  • Tiny
  • Johnnysilverwolf
  • 1998 Chevrolet Blazer
  • 14,000 miles

I just bought this 98 blazer ithard to crank runs rough lost of power and the exhaust smells of fuel when shut off you stillsee white smoke drifting from tail pipe any ideas well apprecaited

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Saturday, November 26th, 2011 AT 2:30 AM

5 Replies

  • Tiny
  • mhpautos
  • Expert
  • 30,590 posts

Check compressions, replace plugs, if one or more are very black and sooty you will have a miss fire on the cylinder due to excessive fuel. (Leaking injector) faulty spark or low compression, is the coolant level low? If the plug looks a dirty rusty colour you may have a coolant leak into that cylinder, the white smoke is also a sign of coolant burning.

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Saturday, November 26th, 2011 AT 2:37 AM
  • Tiny
  • Johnnysilverwolf
  • Member

No coolant lost it also uses alot of fuel will reply about plugs tomorrow could the O2 sensors be bad?

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Saturday, November 26th, 2011 AT 4:27 AM
  • Tiny
  • mhpautos
  • Expert
  • 30,590 posts

Could be and also check for a faulty coolant sensor.

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Saturday, November 26th, 2011 AT 5:29 AM
  • Tiny
  • Johnnysilverwolf
  • Member

Ok changed plugs wires cap button code says first random miss fire cleared then misfireing on cylinder 5 code cleared back to random missfire any ideas

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Wednesday, December 7th, 2011 AT 12:56 AM
  • Tiny
  • homer1967
  • Expert
  • 902 posts

YOU NEED TO TEST FUEL PRESSURE, COMPRESSION, SPARK, ECT READING. AND INJECTOR PULSE WITH A NOID LIGHT.

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Wednesday, December 7th, 2011 AT 1:11 AM

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