I've got a 1977 Central American FJ45 that seems to be missing what little emissions equipment it should have. I'm looking for a source for a non-USA emissions manual or some guidance from someone with a fully put together non-US truck. Alternatively, is there an earlier year of US truck whose emissions manual would be close enough to piece something together? Based on the page counts on SOR, I'm thinking '71 or earlier (the US '77 manual if 430 pages and even the 124 page '72 manual seems like way too many pages for what I should have going on).
Here are the specific issues I'm trying to solve:
1. The vacuum advance on the distributor is not connected. The truck idles fine, but smokes at higher RPMs which I suspect is due to the lack of the advance leading to incomplete combustion. I can't figure out what to plug it in to. My carburetor has a 9 I 2 stamp on the front, so I think it is '79 that was a replacement at some point, but it is clearly a non-USA carb. It has one vacuum port near the idle mixture screw which the throttle positioner is plugged in to. Can I splice in a tee and connect the distributor to this port? It looks like US carbs have the TP hooked up to manifold vacuum, correct? The only vacuum line on my manifold is the brake booster. There are a few plugged ports on the carb that look like they were done in the factory, but I can't be sure. There are also some plugs in the manifold that look removable, but have clearly been in there a while.
2. The gas tank has no vent lines, vapor separator, charcoal canister or anything. As a result, the cab reeks of gas, especially on hot days. I've removed the tank before and didn't find any pinholes. The tank has the hard vents that look the same as US models, so I was going to hook them up to a vapor separator, but what beyond that? Did a non-USA truck of this vintage have a charcoal canister? If so, does anyone have an idea of how it was plumbed? I've been comparing what I have to the desmog diagrams, but I don't have a VSV. I can't tell if there was ever supposed to be a VSV, or if it was pulled out whenever the tank vents were removed (I am also not sure what would have controlled the VSV). At the very least, I will run the vent lines out of the cab, but I'd prefer to not have any gas smell, especially since I don't drive the truck that often. On the off chance that a '77 non-US truck didn't have a charcoal canister, I'm thinking of adding per this thread Hooking up Charcoal canister and fuel seperater and either not running a VSV and just plugging it into the manifold, or adding a "manual VSV" and just wiring it to a button or switch in the cab to vent. Does anyone know how long the VSV normally switches for? Also, per the US manuals, is the VSV supposed to be switching the vacuum on the TP? I could see the idea being that when the fuel from the charcoal canister was being burned, the TP would be "off" and when the charcoal canister was "off," the TP would be "on" to keep the amount of gas going to the engine more or less the same, but I'm just guessing at that.
While I can't exactly tell what is going on vs. what should be going on, I suspect a guy named Jorge may know has he seems to have signed his work by etching his name on the valve cover. I haven't been able to track him down unfortunately ¯\_(ツ)_/¯
Here are the specific issues I'm trying to solve:
1. The vacuum advance on the distributor is not connected. The truck idles fine, but smokes at higher RPMs which I suspect is due to the lack of the advance leading to incomplete combustion. I can't figure out what to plug it in to. My carburetor has a 9 I 2 stamp on the front, so I think it is '79 that was a replacement at some point, but it is clearly a non-USA carb. It has one vacuum port near the idle mixture screw which the throttle positioner is plugged in to. Can I splice in a tee and connect the distributor to this port? It looks like US carbs have the TP hooked up to manifold vacuum, correct? The only vacuum line on my manifold is the brake booster. There are a few plugged ports on the carb that look like they were done in the factory, but I can't be sure. There are also some plugs in the manifold that look removable, but have clearly been in there a while.
2. The gas tank has no vent lines, vapor separator, charcoal canister or anything. As a result, the cab reeks of gas, especially on hot days. I've removed the tank before and didn't find any pinholes. The tank has the hard vents that look the same as US models, so I was going to hook them up to a vapor separator, but what beyond that? Did a non-USA truck of this vintage have a charcoal canister? If so, does anyone have an idea of how it was plumbed? I've been comparing what I have to the desmog diagrams, but I don't have a VSV. I can't tell if there was ever supposed to be a VSV, or if it was pulled out whenever the tank vents were removed (I am also not sure what would have controlled the VSV). At the very least, I will run the vent lines out of the cab, but I'd prefer to not have any gas smell, especially since I don't drive the truck that often. On the off chance that a '77 non-US truck didn't have a charcoal canister, I'm thinking of adding per this thread Hooking up Charcoal canister and fuel seperater and either not running a VSV and just plugging it into the manifold, or adding a "manual VSV" and just wiring it to a button or switch in the cab to vent. Does anyone know how long the VSV normally switches for? Also, per the US manuals, is the VSV supposed to be switching the vacuum on the TP? I could see the idea being that when the fuel from the charcoal canister was being burned, the TP would be "off" and when the charcoal canister was "off," the TP would be "on" to keep the amount of gas going to the engine more or less the same, but I'm just guessing at that.
While I can't exactly tell what is going on vs. what should be going on, I suspect a guy named Jorge may know has he seems to have signed his work by etching his name on the valve cover. I haven't been able to track him down unfortunately ¯\_(ツ)_/¯