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Misfire!

Tiny
TOMMYLIMO
  • MEMBER
  • 1987 CHEVROLET MONTE CARLO
  • 71,000 MILES
I Have a 1987 Monty Carlo SS 5.0 H.O. Under hard Acceleration It Pops Through The Carburetor! It Is Intermittent? Could It be A bad Spark Plug or Ignition Wire? Thanks Tommylimo!
Sunday, April 24th, 2011 AT 9:18 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it and keep testing.
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Sunday, April 24th, 2011 AT 9:19 PM
Tiny
TOMMYLIMO
  • MEMBER
  • 23 POSTS
Thanks Rasmataz! I Have new Plugs, Cap And Rotor and Coil! No! Cats! No! Throttle Sensor! Oxygen Sensor Only A Year Old!Egr! Blocked Off! New Fuel Pump! Everthing Is Fine! Timing! Etc!Need A Better Answer ! I Checked all The Above! Ignition Wires Are Two Years Old!Thanks Tommylimo!
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Monday, April 25th, 2011 AT 4:04 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What do you have for fuel pressure reading KOEO and KOER
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Monday, April 25th, 2011 AT 6:35 AM
Tiny
TOMMYLIMO
  • MEMBER
  • 23 POSTS
I Will Check It And Get Back To You! Thanks Again! Tommylimo.
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Monday, April 25th, 2011 AT 6:47 PM
Tiny
TOMMYLIMO
  • MEMBER
  • 23 POSTS
Rasmataz I checked Fuel Pressure and It's Fine. Right Where It's Supposed To Be! What Next? Thanks Tommy!
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Thursday, May 5th, 2011 AT 2:06 AM

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