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I’m currently having the same issue. At idle she flutters but not durning take off or driving. Still says a misfire on cylinder 1 but have replaced the plug and coil. Ran a compression test and results showed 90 on 1&2. So I’m currently figuring mine out. Have you tried to seafoam the engine...

So here’s what I think it is. Either timing has jumped (Timing Chain), or Crank sensor. If you run to auto zone they sell a inline spark plug tester for 15 bucks. Make sure the coil packs for each cylinder are firing. Can you smell fuel durning crank? Also any anti-theft system on your car? Hope...

So I just bought a 2009 Corolla and it has a severe misfire. I have replaced plugs and ignition plugs with same results. I have completed a compression text on cylinders 1&2 which tested at 90 and 3&4 were 160. So I have decided to replace the engine. The 2009 engine has 213k miles and want to...