The 2004 accord tourer with only 56,000 miles. Cold engine gives massive shudder and failure to start.Turn off then try again and it starts and runs perfectly every time until the engine is cold, and the shudder returns. No vibration or gear change problems and clutch action perfect. Drive very smooth. My third Accord Tourer and over 100,000 in the last one, it showed the same symptom maybe four or five times over its life. Any ideas. My mechanic initially says the dual mass flywheel problem but now doesn’t think this is the problem. Help.