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Did you make or extent that box to fit those 2 gauges?

No. I am actually looking through the site now for ideas. I was hoping to find some gauge ideas as I want it to look like it belongs and not like I pulled it out of a race car.

Already thinking about it but first I need to turn the fuel screw back in a turn or 2. Now that I am getting more fuel pressure I am getting a lot of black smoke when I take off in first. Clears up pretty quick but I think it may be too much. My pump does not have the fuel plate. It has the full...

Just got done putting the new OFV back in. Took a little bit of work priming it but it finally turned over. Took it for a ride and definitely better throttle response and more power on the straights but not much difference on the hills.

I get where you are coming from willwagner but when I first picked up my truck it ran but was very weak on power. Since then I replaced all the fuel filters and fuel lines and cleaned everything up. I did see a difference in performance and power but still struggled starting off the line and...

Thanks for the info. I will try it when I get home from work tonight. I really want to adjust the gov springs but I am still a bit nervous. I know a little about turning wrenches which is enough to get me in trouble. Lol. This is why I am asking very basic rookie questions and getting overly...

I did not prime the system because I didn’t know it needed to be done. Only a little bit of fuel dribbled out so I didn’t think it needed to be done. I thought my problem was the different hole placement between the 2 parts. Then when I put the old one back in and it still didn’t start it really...

I put the old one back in and now it won’t start at all. Please help.

Well my new ofv020 came today and it’s not the same as the one in my truck. I tried it anyway and would not start. Here is the difference. Any idea of where to go from here?

I am going to order 1 today and says it should be here by Friday. I will change it out Saturday and let you know my results.

Jeepsinker what is an overflow valve and where is it located?

Yeah. I went through all of that. I am a truck driver so I am no stranger to air brakes. As for the air filter and fuel system it has all been replaced. When I replaced all the fuel lines, up tube and filters I did see a difference in normal driving but it is still very sluggish on the uphills.

I never pull anything with my truck but the main reason I want to adjust it is because of the hills in northeast Pennsylvania. It practically gives up before it even starts to climb.

Hello everyone. I am new to this forum and new to owning a military truck (87 Harsco M923A2). I have recently read over this entire thread multiple times and was curious if anyone who has done all 4 mods to the injector pump (fuel screw, star wheel on aneroid valve, idler springs, and full fuel...