glow plugs would be a cheap insurance policy. Does the light blink for about 45 seconds after the car is started? How long since the last valve adjustment? I bet that's where your problem lies. If not there, how about IP timing? Does the car smoke heavily when it is at running temp or cruising down the road?
Thanks
David

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2000 Honda Accord V6 137k miles

1972 300SEL 4.5 98k miles

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