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Q: Why would your Isuzu diesel be blowing out the intake?
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I would lilke to know the answer to this as well. Having the same problem all of a sudden.


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If the carb is blowing air OUT instead of sucking air in then you possibly have a bad intake valve. As the piston comes up then the air is forced out the intake valve and back thru the carb. Another possibility is that the timing chain or timing belt is broken and then the piston again is pushing the air out the intake valve. The definitive test would be to run a compression test.


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