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air bubbles in diesel

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Old Apr 2, 2014 | 08:13 AM
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runningman's Avatar
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Default air bubbles in diesel

Hi


1998 300 td 48000 miles.


diesel knocks at idle but runs smoothly when revved, ive noticed air bubbles flowing along fuel lines between filter and pump is this causing it to knock?. ive cracked each injector but it still the same. I ve read on this site that certain seals can be replaced, can the seals in the pump be replaced by a competent DIY mechanic.
Thanks
 
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