While the turbo was out for machining, I got to work on some little stuff that needed attention. A couple things really bother me about these older trucks, one being rattles. I keep a stock of oem style stainless hardware to fix door panels rattling and I like to install new striker bushings to keep the door from vibrating, and to help them shut nice. Always find deck screws holding panels on and electrical tape in place of the striker bushings
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Adjusted the shifter and MLPS so you can start the truck without having to climb in and wiggle the shifter
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Fixed the wiring on the new FSV so both tanks and gauges work. Rear sending unit ohm'd out bad, its reading low ohms regardless of fuel level, which pegs the fuel gauge. Fixed a fuel leak on one of the hose connections by the pump and behind the engine on the return. Changed out the prefilters ahead of the FSV but already got some crud in the fresh ones, glad they're there.
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Mounted up the 6.0 vacuum pump and ran a line to the distribution block so the factory warning light works if vacuum level drops too low. Blocked off the unneeded ports for the vacuum brakes (hydroboost converted already) Seem to be having issues with the internal shutoff switch, the pump doesnt want to build enough pressure to shut itself off regardless if theres lines hooked up or just blocked off. If I put a manual vacuum pump on the outlet it will make and hold enough pressure to shut itself off, but wont build it back up. Ive got a ford vacuum pump kicking around the shop somewhere, gonna try that out in place of the dorman pump. As far as wiring I just have the pump grounding off one of the mounting bolts, and its piggy backing power off the relay for the fuel pump to come on with ignition. The pump hardly draws anything, so it didnt need an individual circuit and fuse.
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With the new prefilters I was hoping the e pump we have in there would be sufficient but its dropping pressure just putting the truck in gear. Ive got a 105p on the way and a holley reg. Should be fixed for good then, and have the extra fuel we need to turn the IP up for the new setup