Why is truck still backfiring and hard to start?

Tiny
CATHY PECK
  • 1993 MITSUBISHI MIGHTY MAX
  • 200 MILES

Truck started running rough and backfired. Found bad spark plug wires. Replaced plug wires, spark plugs, cap and rotor. Now it still has backfire.

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Sunday, April 22nd, 2012 AT 7:24 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
  • 68,398 POSTS

Check engine compression for a burnt valve.

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Sunday, April 22nd, 2012 AT 7:35 PM

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