Posted by Dieseltech on May 24, 2016 at 17:55:50 from (199.16.223.151):
In Reply to: Injection pump help posted by Mtractor on May 24, 2016 at 14:39:33:
Bosch VA or VE pump? If VA and it's been setting awhile it may have both the throttle valve and spill valve stuck, and both operating pins broken inside. The VA pumps with the electric solenoid on the back side when working correctly the rod pushes the throttle valve about 1/8 inch to run, and the throttle return spring inside pushes it to off. If the valve is stuck like I've seen in the past the only way it might work again is to completely tear down the pump for a thorough cleaning of the stale fuel varnish buildup inside. Have you had the two screw timing dover off to see what it looks like inside?
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