Honda J-Series Engine – Valve Cover Gasket

[Greg Fischer]

HELP! So I followed the video (https://www.youtube.com/watch?v=GeddYKKorsY&t=1324s) for doing my front valve cover on my 04 Honda Odyssey (J-series engine, 3.5L). Replaced the gasket, cleaned up the intake manifold cover since there was heavy carbon buildup, and reassembled everything. Time-consuming, but no problem. I went to start the engine and it struggled to turnover. It did, but not well. I got it to start once and the engine was not right – it almost sounded as if only half the pistons were firing. I double-checked the ignition coils and connectors to ensure they were on – no issue.

What did I do wrong? Where should I be looking for a mistake? Unfortunately, no engine codes triggered to give me an indication of what it might be.

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