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Old 10-21-2010, 03:02 PM
barry123400 barry123400 is offline
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Join Date: Nov 2004
Location: Nova Scotia, Canada.
Posts: 6,510
Fuel pressure in the injection pump base is not determined by the injection pump other than the pop off pressure point of the relief/return valve. The relief/return valve can deteriorate with time as well.

Air getting in is of a simular nature. In that it is not dependant on the injection pump either. The injection pump only becomes an issue with air ingress usually on the newer type injection pumps after 1985.

Certainly This area will not be the cause in many cases. It is just so easy and cost effective to check it out first though. These cars are very old remember.
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