Crom Cruach Posted April 25, 2022 Share Posted April 25, 2022 I’m trying to sort the stuck fuel gauge and while I’m under here checking the ground connection. There are 3 hoses coming out from the tank, can anyone tell me what they are and where they go? the one I’m holding here is totally corroded Quote Link to comment Share on other sites More sharing options...
Dtret Posted April 25, 2022 Share Posted April 25, 2022 The three in your hand, two go to the fuel sender , the other goes to the nipple ( sorry Glen) on the tank. I think there may be two more but I’m not sure on a 72. Quote Link to comment Share on other sites More sharing options...
Glen Posted April 26, 2022 Share Posted April 26, 2022 12 hours ago, Dtret said: The three in your hand, two go to the fuel sender , the other goes to the nipple ( sorry Glen) on the tank. I think there may be two more but I’m not sure on a 72. No need to apologize, Dennis. Now had you segued into that corroded line lactating fuel is when I would’ve thought you might be outta pocket 😂🤣 Quote Link to comment Share on other sites More sharing options...
Crom Cruach Posted April 26, 2022 Author Share Posted April 26, 2022 Ok I’m having black coffee this morning! The corroded line - is this the one that goes to the fuel nipple? What does it do? What effect will the corrosion have on the system? 1 Quote Link to comment Share on other sites More sharing options...
Dtret Posted April 26, 2022 Share Posted April 26, 2022 It should just be a vent line. Corrosion is not the best but it should cause no issue until you start smelling fuel fumes. Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted April 26, 2022 Share Posted April 26, 2022 I believe in line tube sells the lines/tubes. 1 Quote Link to comment Share on other sites More sharing options...
stangeba Posted April 26, 2022 Share Posted April 26, 2022 I didn't see what year your Monte is. This is what my 71 looks like. Inside one of the hoses is a small plastic restrictor. When I changed my hoses, I almost threw it out! 1 Quote Link to comment Share on other sites More sharing options...
Dtret Posted April 26, 2022 Share Posted April 26, 2022 His is a 72. I didn’t know if 72 had the vapor box behind the seat. That’s why I didn’t know about the two outside lines but the three in the center should eventually end up at the same place. 1 Quote Link to comment Share on other sites More sharing options...
jft69z Posted April 26, 2022 Share Posted April 26, 2022 72 does have the vapor chamber behind the rear seat. The gas tank may have a couple of vent lines on the outside corners too. 2 Quote Link to comment Share on other sites More sharing options...
Scott S. Posted April 26, 2022 Share Posted April 26, 2022 Basically, one goes to the fuel pump, one returns from the condenser can, (early emission control) and one leads to the plastic vent thingy..... (to open air) Quote Link to comment Share on other sites More sharing options...
Crom Cruach Posted April 26, 2022 Author Share Posted April 26, 2022 5 hours ago, stangeba said: I didn't see what year your Monte is. This is what my 71 looks like. Inside one of the hoses is a small plastic restrictor. When I changed my hoses, I almost threw it out! Ok lads, based on Stangeba’s (very useful) diagram, those three hoses are metal, and are the same three I see in this photo… so the two rubber hoses (in my first photo) go to the pump, and return from condenser, is that right? Could explain my intermittent stuttering engine issue if the corroded one is to the pump. Quote Link to comment Share on other sites More sharing options...
Dtret Posted April 26, 2022 Share Posted April 26, 2022 Could explain it but as ugly as they are, if they are not leaking they are still doing their job. My bet is that you could probably eliminate ( I wouldn’t) the vapor chamber and it would run no different. I’m not sure on that but as long as you’re still venting to the vapor canister under the hood you would be good. Like I said I wouldn’t do it but I’m sure people have. Quote Link to comment Share on other sites More sharing options...
jft69z Posted April 26, 2022 Share Posted April 26, 2022 What vapor canister under the hood.....lol. 2 Quote Link to comment Share on other sites More sharing options...
Crom Cruach Posted April 26, 2022 Author Share Posted April 26, 2022 Thanks Dennis, don’t want to change anything, just want to fix my fuel issue and get the gauge working. Here is the Vapor chamber on my ‘72 Quote Link to comment Share on other sites More sharing options...
stangeba Posted April 26, 2022 Share Posted April 26, 2022 Yes, I still have it! The vacuum diaphragm (round thing on top) did have a leak so I bought a replacement charcoal canister with a new diaphragm. I think the large hose comes from the rear tank area, the small hose on top acts as an on / off switch allowing the fumes stored in this canister to be sucked into the running engine via the hose just below it. Quote Link to comment Share on other sites More sharing options...
Dtret Posted April 27, 2022 Share Posted April 27, 2022 1 hour ago, jft69z said: What vapor canister under the hood.....lol. Where them two empty core support holes are. If I did mine like you did that would have ended up in the basement somewhere. Useless garbage. 1 Quote Link to comment Share on other sites More sharing options...
Scott S. Posted April 27, 2022 Share Posted April 27, 2022 23 hours ago, Crom Cruach said: Ok lads, based on Stangeba’s (very useful) diagram, those three hoses are metal, and are the same three I see in this photo… so the two rubber hoses (in my first photo) go to the pump, and return from condenser, is that right? Could explain my intermittent stuttering engine issue if the corroded one is to the pump. More likely a bad filter... Have you pulled the sender unit and looked at the tank and pick up sock ?? There might be some corrosion at that end. Quote Link to comment Share on other sites More sharing options...
Crom Cruach Posted April 27, 2022 Author Share Posted April 27, 2022 I looked at the filter - it’s paper - and it seems good, but I have a brass type coming from TPP. Is the sender unit the part on the tank that sends info to the fuel gauge? Drop the tank job yeah? Quote Link to comment Share on other sites More sharing options...
Dtret Posted April 27, 2022 Share Posted April 27, 2022 Yes drop the tank. The sender has a ring around it that turns off. They make a special tool to get the ring off. But usually gentle persuasion with a hammer and chisel ( or something like that) wool get it done. Quote Link to comment Share on other sites More sharing options...
Crom Cruach Posted December 15, 2022 Author Share Posted December 15, 2022 On 4/26/2022 at 2:18 PM, stangeba said: I didn't see what year your Monte is. This is what my 71 looks like. Inside one of the hoses is a small plastic restrictor. When I changed my hoses, I almost threw it out! Finally got the tank out today. What is this restrictor? Which hose is it in? I’m putting it back together tomorrow and I didn’t see anything like this! Quote Link to comment Share on other sites More sharing options...
stangeba Posted December 15, 2022 Share Posted December 15, 2022 It may have already been thrown out. To be honest, I don't remember for sure but I remember the hose labeled "VENT PIPE" has a oval drawing on the hose and I assumed that is where it went. Where I put it, I can't remember for sure, sorry. Quote Link to comment Share on other sites More sharing options...
Crom Cruach Posted December 15, 2022 Author Share Posted December 15, 2022 On 4/26/2022 at 2:18 PM, stangeba said: It’s weird, it looks like it just stops the flow, what’s the point? Then again the whole venting vapors behind the rear bench is a bit weird! Quote Link to comment Share on other sites More sharing options...
stangeba Posted December 16, 2022 Share Posted December 16, 2022 7 minutes ago, Crom Cruach said: On 4/26/2022 at 9:18 AM, stangeba said: It’s weird, it looks like it just stops the flow, what’s the point? Then again the whole venting vapors behind the rear bench is a bit weird! There is a small hole in that blue plastic plug. Quote Link to comment Share on other sites More sharing options...
Crom Cruach Posted December 16, 2022 Author Share Posted December 16, 2022 that makes more sense alright Quote Link to comment Share on other sites More sharing options...
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