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2003 Toyota MR2 Engine Problems

Tiny
BUSHSCARFACE
  • MEMBER
  • 2003 TOYOTA MR2
  • 1.8L
  • 4 CYL
  • RWD
  • MANUAL
  • 79,200 MILES
So my MR2 has been sitting for about 4 months now due to the flex pipes on my pre cats have blow off due to back fire. Once the cats were replaced I took my MR2 into toyota to find what else was wrong with it. They replaced one ignition coil and said it was good to run. So once I got it back I checked to oil and it was good to run however, one week later (today) my oil completely burnt out and my car stalled out. So I quickly added oil to it and now the engine has a loud knock to it. My coworker used his OBD II device to detech the problem and his OBD said cylinder 1 and 2 were misfiring. How can this come apar when Toyota just said it was good to go and they replaced the ignition coil on cylinder 2 and they said all my other cylinders were good on Spark, Air, and Fuel.
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Thursday, March 13th, 2014 AT 5:37 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
The knocking noise means you have most probably spun a con-rod bearing.
The misfiring is another problem by itself and further diagnostics would be required to find out why.
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Sunday, March 16th, 2014 AT 2:47 AM

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