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How do you test injecter pump?

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Old Mar 21, 2005 | 11:01 AM
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How do you test injecter pump?

I have a 94 F250 4X4 7.3 torbo 170k miles on it and the injectors or the injector pump have never been changed. I keep the fuel fitter clean.
It starts ok but has gray smoke when it starts the first time in the mornings. I have noticed a reduction in MPG. I'm looking at changing the injecters. But how do I tell if the injector pump is still good?
 
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Old Mar 21, 2005 | 08:53 PM
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It will start running bad when the pump goes out. It may surge going down the road, or die at stop lights. The last couple I've seen smoked blue and missed when revved up in neutral.
 
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