ignition spark

6 CYL • 4WD • MANUAL
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CHEVYMAN4
  • MEMBER
  • 1 POST
what could cause spark to be good goin into the cap but real weak coming out
Feb 9, 2011 at 7:15 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,989 POSTS
is the cap and rotor new?
Feb 9, 2011 at 7:44 PM
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CJ MEDEVAC
  • ✓Experienced Mechanic
  • 11,000 POSTS
How are you "Gauging" the Strength of the Spark?

How does it look with a plug out and grounded to engine?

Is this a point system?

What have you "Performed" or replaced? New or used parts.

Is this a "Stock" Set-up?

Exactly what is occurring/ not occurring?

What have you tested and how?

Need more info, and More Detail is Better!

Your Turn

The Medic
Feb 9, 2011 at 7:48 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
If it has a good snapping blue spark going into the D/Cap and weak coming out towards the plugs-best replace the cap and rotor it has to go thru there before it hits the plugs-My question now are your plug wires any good, not sure check its resistances-anything over 30K's ohms put it in the trash can called filer no.13

NOTE: Don't forget to check the condenser/capacitor-should be infinite reading, pigtail and housing

Feb 10, 2011 at 4:05 AM
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