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Engine Miss - revisited 200

posted by  analogdad on  Sun Nov 16 14:45 CST 2003
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last visit: Wed Jul 16 11:22 CST 2014
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Last week, I described how my engine missed badly at cold start and then proceeded to "knock/ping" during a test drive. A compression test revealed excellent compression on all cylinders and a broken electrode on #1 sparkplug. Replace plug and engine ran great when cold/when warm. Vacuum gage suggested no vacuum leaks.

However, this morning it again missed badly (like it might break a motor mount) for about 90 seconds at cold start.

I'm wondering if the legendary #561 ECU in this car is throwing the timing off periodically, causing the miss and breaking that spark plug through pre-ignition? Or could it be something more simple in the warm-up system? Any thoughts on this appreciated...

Thanks...






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New Engine Miss - revisited [200]
posted by  analogdad  on Sun Nov 16 14:45 CST 2003 >


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