engines running rough

2004 MERCURY SABLE
212,000 MILES
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BLAIRG41
  • MEMBER
  • 1 POST
You can hear a fuel knock coming from engine, also saw catalytic converter turning red. WHILE coming off interstate slowing down heard noise from engine felt no power and engine running rough and knocking noise.
Sep 22, 2012 at 4:31 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
engine is missing which is why the converter is glowing.

the noise may be another issue. it could be a valve related issue like a rocker arm. you need to have this checked.

Roy
Sep 22, 2012 at 4:34 PM
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