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i had a similer problem. the first thing i would do is replace the firewall fuel filter with a housing that has a hand primer. this will save you hundreds in batteries. second put an inline check valve between the lift pump and the tank. this will stop back flow. the original lift pump is good...

i dont plan on putting an eletric pump in unless its strictly a backup. the factory system workes just fine as long as theres no air in the system. this weekend i am going to change that little hose and pickup a check valve. ill start with the little hose on the injection pump.

im going to be plasma cutting out some cucv emblems, with a logo or something to make it look awesome

UPDATE. I finally had time to get under the hood of the beast and check things out. i took the air cleaner off and started looking for issues. the truck had lost prime again and i had a hunch as to where the leak/ leaks were. on the new filter housing and filter there is a water seperator bowl...

i had a run in with the infamous dash gauge. on my gauge there is a small section that has a larger white part. if the needle is not in that little area, the batteries are charging. so green is just a relitive condition, charging is another matter.

ill admit, i have been guilty of thinking that a truck came with a different motor but dismissing it like a jack knob was totally out of line. i would have said something flippant to him like, hey did you fix the flux capicitor in that truck they go bad on internationals alot. dont forget to...

well i went to start the truck today.... it lost prime entirely. so i had to re prime it... again. BUT! on the up side since i put clear fuel lines on it, i can see where the air is comming from. i need to go through my lines and make sure everything is tight, replace the lift pump, and put new...

yup i had the same problem. its your filter 99% positive.

I bypassed the glow plug b.s. awhile ago. I got tired of that stupid relay so I just put a 24v switch and solenoid on the glow plugs. I'll check the warm up sensor thingmabob tomorrow morning. Thanks for the advice!

I had the same issue on my truck. To narrow it down from a vrv (vaccuume regulator valve) or the sm ( shift modulator) I by passed the vrv with a simple placstic t hose fitting with one end capped off. The truck shifted normally so I found my problem.

Where might that be?

I have had my 87 m1008 cucv for about a year now ( yes 87 checked the vin it was manufactured in Jan of 87) and I have been slowly replacing seals and sending units. The first was the tank fuel level sending unit. I pulled the bed and the tank pick up tubes and they r in good condition. I then...