Rockatansky
SILVER Star
Hi everyone, I finally have a running Land Cruiser again. It's a long story involving a thrown rod and an engine swap (2f for 2f) but here I am. One thing that I have found that is different right now is that I have a terrible gas odor in the cab and eine compartment. I did some inspecting and found that my charcoal canister is barely hooked up. It has the line coming in from from the gas tank, but both outbound lines lead to nowhere.
The purge line is nonexistent, and the soft line that connects to the ocv connects to the hard line, goes around the firewall, and then just stops at the end of the hard line, between the brake booster and carb, like so:
I'm thinking that these open venting locations are what's causing the cab (and me) to reek of gasoline.
I have found some excellent threads that capture very similar issues, but I have some complications that I'd like to confirm and then ask for some help with. For example, I have studied this thread (,Raw Gas Smell in and out of 1978 FJ40) and I understand what I would like to do in terms of connecting the purge line and ocv lines of the charcoal canister, but I have two problems with lining up how the solution is presented in post #20. First, I have no VCV for the red line to connect to (a desmog was performed by a previous owner). According to this desmog schematic, that's where it should connect in a proper desmog. Since this is clearly not a proper desmog, what are my other options?
Second, where post #20 shows the ocv line connectin to a nipple on the intake manifold, and the desmog diagram shows it connecting to a tube on the side of the carb, I run into my other major issue. The existing nipple on the side of the intake manifold is looks like goes around the engine to the pcv valve. Is this correct? If so, what am I supposed to connect the ocv line from the charcoal canister to? The second issue (below) is probably part of my problem, too.
My cruiser is a 10/77 1978 model, and I believe it started its life in Colorado. The best I can figure from both the SOR carb identification guide and from this post (77' FJ40 - 2F Desmog - Correct vacuum routing), I have a 1977 high altitude federal carb, so the tube coming off of the body above the secondary diaphragm is nonexistent. This makes me think that a dealer in Colorado used a '77 high altitude carb on a '78 cruiser, and when someone desmog get it years ago, they were left with some issues getting things to tie together. Add to it that the mechanic who did my engine swap isn't a LC type of guy, didn't really get the desmog process, and tried the best he could. Lesson learned for me on not photo documenting the crap out of the engine bay before sending it off, but I'm here looking to make things right.
The high altitude port at the top of the carb is plugged into the port on the intake manifold, which I'm almost certain is wrong.
Ignoring for a moment how completely wrong the entire vacuum setup is on the carb, my first question is how to best get rid of the gas smell, and that seems to be through routing the lines off the charcoal canister correctly.
My second question is what is the best setup for connecting vacuum lines on the carb? I can see that the advance to the distributor should go to port #13, and that I should probably just cap the high altitude port (I'm in Pittsburgh now), and that the TP port should go to a (as of now nonexistent) VCV. Both BVSVs (blue and brown) are in place, so I can use those.
One big issue I have is that my carb doesn't seem to have the port to support the ocv line from the charcoal canister. Any thoughts on how I can deal with this?
Longer term, I'm going to start assembling the smog components because Pittsburgh is an emissions city and county, and I'd like the vehicle to be complete, since it's otherwise mostly stock.
Thanks in advance, is good to be back on the road and have a resource like this forum to get these issues ironed out.
The purge line is nonexistent, and the soft line that connects to the ocv connects to the hard line, goes around the firewall, and then just stops at the end of the hard line, between the brake booster and carb, like so:
I'm thinking that these open venting locations are what's causing the cab (and me) to reek of gasoline.
I have found some excellent threads that capture very similar issues, but I have some complications that I'd like to confirm and then ask for some help with. For example, I have studied this thread (,Raw Gas Smell in and out of 1978 FJ40) and I understand what I would like to do in terms of connecting the purge line and ocv lines of the charcoal canister, but I have two problems with lining up how the solution is presented in post #20. First, I have no VCV for the red line to connect to (a desmog was performed by a previous owner). According to this desmog schematic, that's where it should connect in a proper desmog. Since this is clearly not a proper desmog, what are my other options?
Second, where post #20 shows the ocv line connectin to a nipple on the intake manifold, and the desmog diagram shows it connecting to a tube on the side of the carb, I run into my other major issue. The existing nipple on the side of the intake manifold is looks like goes around the engine to the pcv valve. Is this correct? If so, what am I supposed to connect the ocv line from the charcoal canister to? The second issue (below) is probably part of my problem, too.
My cruiser is a 10/77 1978 model, and I believe it started its life in Colorado. The best I can figure from both the SOR carb identification guide and from this post (77' FJ40 - 2F Desmog - Correct vacuum routing), I have a 1977 high altitude federal carb, so the tube coming off of the body above the secondary diaphragm is nonexistent. This makes me think that a dealer in Colorado used a '77 high altitude carb on a '78 cruiser, and when someone desmog get it years ago, they were left with some issues getting things to tie together. Add to it that the mechanic who did my engine swap isn't a LC type of guy, didn't really get the desmog process, and tried the best he could. Lesson learned for me on not photo documenting the crap out of the engine bay before sending it off, but I'm here looking to make things right.
The high altitude port at the top of the carb is plugged into the port on the intake manifold, which I'm almost certain is wrong.
Ignoring for a moment how completely wrong the entire vacuum setup is on the carb, my first question is how to best get rid of the gas smell, and that seems to be through routing the lines off the charcoal canister correctly.
My second question is what is the best setup for connecting vacuum lines on the carb? I can see that the advance to the distributor should go to port #13, and that I should probably just cap the high altitude port (I'm in Pittsburgh now), and that the TP port should go to a (as of now nonexistent) VCV. Both BVSVs (blue and brown) are in place, so I can use those.
One big issue I have is that my carb doesn't seem to have the port to support the ocv line from the charcoal canister. Any thoughts on how I can deal with this?
Longer term, I'm going to start assembling the smog components because Pittsburgh is an emissions city and county, and I'd like the vehicle to be complete, since it's otherwise mostly stock.
Thanks in advance, is good to be back on the road and have a resource like this forum to get these issues ironed out.
