Pulled my spring out and measured- 20mm- not bad I thought considering the mileage (219K). My engine has the shakes about 50% of the time when I come to a stop and leave it in D, put it in N and things smooth out. So I stretched the spring out to 24mm and no noticeable difference, but hopefully the IP is retaining a little more juice now. I still want to rebuild the lift pump and replace the plunger with the new style primer for peace of mind. I would also like to measure the fuel pressure before and after rebuilding of lift pump springs. Anyone try rigging up a gauge with a sending unit between the secondary filter and IP?

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83 300TD 219K HOMER