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Cold start injector fouled on 3zve

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Old 02-16-2013, 02:43 AM
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Unhappy Cold start injector fouled on 3zve

I cleared it and the engine starts better when cold, but what causes this? I think it is blow-by from PCV system, or maybe because when I first bought truck it had 25* advanced timing. The inside of my intake must be coated with crud.
Old 02-17-2013, 08:49 AM
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It starts a lot easier on a 20* morning.
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