LilRobert1367
Junior Member
- Joined
- Apr 11, 2021
- Posts
- 24
- Reaction score
- 9
- Location
- Colorado
- First Name
- Robert
- Truck Year
- 1979
- Truck Model
- C20
- Engine Size
- 250
With the EGR-TVS, I know that one of the line connect to EGR and the canister with a tee and the other line should connect to the carb but what port on the carb should the other line for the EGR-TVS connect to on a Monojet carb?
The truck was converted to run off propane since they used it at my grand-uncle propane dealership in the early 80s. The kit they put on the truck would of allowed them to run Gas and Propane but they disable everything that had to do with gas and just ran it off propane. The carb seem to be turned a quarter of a turn compared to everything I can find on a 250 running a monojet carb, so my guess is that the Monojet on the 250 isn't the original carb that was on it. I believed it was a 2-barrel carb that they downgraded the carb to a 1 barrel carb to work with the propane mixer that came with the propane conversion kit, so they had to put a 2 barrel to 1 barrel adapter on the intake manifold.
I think I have majority of the vaccum lines figured out except for the EGR-TVS port that is closest to the thermostat housing. The only port open on the Monojet carb is the port that is under the fuel bowl but I believe that the port that would go to the air cleaner housing but the truck don't have the orginial air cleaner. So does anyone know what I should do. Do I leave it alone or do I connect it to the one open port on the carb?
The truck was converted to run off propane since they used it at my grand-uncle propane dealership in the early 80s. The kit they put on the truck would of allowed them to run Gas and Propane but they disable everything that had to do with gas and just ran it off propane. The carb seem to be turned a quarter of a turn compared to everything I can find on a 250 running a monojet carb, so my guess is that the Monojet on the 250 isn't the original carb that was on it. I believed it was a 2-barrel carb that they downgraded the carb to a 1 barrel carb to work with the propane mixer that came with the propane conversion kit, so they had to put a 2 barrel to 1 barrel adapter on the intake manifold.
I think I have majority of the vaccum lines figured out except for the EGR-TVS port that is closest to the thermostat housing. The only port open on the Monojet carb is the port that is under the fuel bowl but I believe that the port that would go to the air cleaner housing but the truck don't have the orginial air cleaner. So does anyone know what I should do. Do I leave it alone or do I connect it to the one open port on the carb?
