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  1. 2zz pistons diagnosis

    Care, Maintenance, and Troubleshooting
    To 2zz engine owners... I just disassembled my engine to get the head rebuild. I noticed that the pistons have the common dark carbon deposit, but piston 2 and 3 have more than the rest and is kinda like a dark sludge. Is this normal? The exhaust ports looked clean. I just got the engine, so I...
  2. 180 off? Is the engine toast now?

    Care, Maintenance, and Troubleshooting
    Replaced valve seals according to the great instructions in this post .... got everything back together, made sure the chain and sprockets went back in their proper places and everything. Went...