1997 Mitsubishi Montero pinging

1997 MITSUBISHI MONTERO
211,000 MILES • 6 CYL • 4WD • AUTOMATIC
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DAWGBYTE
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  • 4 POSTS
My engine pings when it is warmed up. My mechanic says I have compression. We found bad spark @ the injector wire. Paid to check plugs & had to replace 1 & replaced the plug wires. Helped for a short time w/min ping. Now getting worse under load or up hills. What do you recomend? I've spent as much as I can right now.
Nov 2, 2010 at 6:16 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check the ignition timing if okay-clean out the EGR valve and see what happens
Nov 2, 2010 at 6:19 PM
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DAWGBYTE
  • MEMBER
  • 4 POSTS
Thank you . I'll try cleaning the EGR & get back to you.
Nov 2, 2010 at 6:49 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Also check if it has a knock sensor its job is to retard the ignition timing when it senses detonation/pinging/spark knock-
Nov 2, 2010 at 7:34 PM
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