1999 Renault Laguna firing

1999 RENAULT LAGUNA
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GARETHW78
  • MEMBER
  • 1 POST
Engine Performance problem
1999 Renault Laguna 4 cyl Front Wheel Drive Manual

how do i find out witch cylinder is not firing
Mar 7, 2010 at 6:30 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Get an insulated glove remove plug wires one at a time while engine is idling and ground the wire to the engine-A snapping blue spark should be present-

When you remove the wire, the RPM should drop aleast 150rpm if not that cylinder has a problem
Mar 7, 2010 at 6:37 AM
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