Are we talking about the bottom bolt on the injection pump support/because ive run with that bolt completely out (for adjustment)If the other three mounting plate bolts are tight,that thing wont go anywhere!
Steve, I've been following your thread & was perplexed by this surging you were experiencing. Then, last Friday, mine started to do the same thing. I checked the IP bolts & all were snug. It still surged. Today I decided to take a peak in the the light of day. Sure enough, two of the IP bracket bolts were backed off & the pump would get into a visible harmonic pattern. I snugged the bolts back up as best I could & it seems to be better. Any recommendations on tools that can reach those two bolts with the IP still in place?