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Cars

Engine Misfire fix!

Hello all!

I had the pleasure of helping my buddy Hunter fix his 1999 Lexus ES300.

He noticed that his car was running rough.  He checked the engine fault code and it read P0302 – “Engine misfire detected on cylinder 2”.  Before we go any further we needed to figure out what could cause this issue.

Things that could cause the problem:

-Spark plug is out of gap or should be replaced

-Ignition coil is faulty/worn out

-Bad compression (This would be worst case)

Now that we have some things to check we decided to start on the project.  We began by locating which cylinder was cylinder two:

es300 cylinder count

This cylinder happens to be located at the front left cylinder of the engine block.

Tools:

  • Socket Set

Materials:

  • Spark plug
  • Coil pack
  • Anti seize grease

We did not have a compression tester on hand so we decided to try a new spark plug first.

We used a socket wrench with 5/8″ socket with an extender.  To remove the spark plug we simply plugged the coil pack back on to the spark plug to pull it out.

After replacing the spark plug we started the engine up and still had a misfire.

The next step was to replace the coil pack which ended up being the solution!

Check out the video of the process!

Cheers!