ggdad1951 Posted February 27, 2012 Report Posted February 27, 2012 now of course that I am close to getting the front end on, I need to REALLY take care of the following problem (when it's easy to deal with): when first starting the truck, I get gas leaking out of the top seal on the carb. Once she's running no more leaks. My thought is the float isn't adjusted correctly? Quote
Young Ed Posted February 27, 2012 Report Posted February 27, 2012 I wonder if your needle/seat are sticking slightly between runs or possibly have a defect. I think your float would have to be severly out of adjustment or have a leak to allow the carb to overflow. I do have a bunch of parts carbs if you end up needing something. Quote
ggdad1951 Posted February 27, 2012 Author Report Posted February 27, 2012 we did overhaul the whole thing a year ago. I think you've seen this issue the last time I ran it when you were around. Quote
Young Ed Posted February 27, 2012 Report Posted February 27, 2012 Have you installed the at the carb fuel filter yet? Quote
ggdad1951 Posted February 27, 2012 Author Report Posted February 27, 2012 Have you installed the at the carb fuel filter yet? no I haven't swapped that out yet, I was going to do that at the same time as putting in my alternate pump to carb fuel line. And all of that was going to happen when I played with the carb. I need to get my heater installed so I can refill the coolant as well (hopefully chrome will be done and I can put the temp probe in as well while the coolant is drained). Quote
HanksB3B Posted February 27, 2012 Report Posted February 27, 2012 Mark, It's a pretty easy fix. The carb rebuild kits typically supply a cardboard gauge. I have more documentation should you need it. Hank P.S. (I received Merle's Eyelette Tool Thanks) Quote
ggdad1951 Posted February 27, 2012 Author Report Posted February 27, 2012 Mark,It's a pretty easy fix. The carb rebuild kits typically supply a cardboard gauge. I have more documentation should you need it. Hank P.S. (I received Merle's Eyelette Tool Thanks) yah, I thought the float level was checked when we rebuilt the carb, but then I changed the needle stop it pushes against and thought it was the same (but maybe not?)....What other reason besides the float being out of adjustment would cause the carb to flood w/ fuel to that level? Quote
Dave72dt Posted February 27, 2012 Report Posted February 27, 2012 yah, I thought the float level was checked when we rebuilt the carb, but then I changed the needle stop it pushes against and thought it was the same (but maybe not?)....What other reason besides the float being out of adjustment would cause the carb to flood w/ fuel to that level? A float that doesn't. Occasionally you find needle valves that aren't long enough and don't really shut the fuel off. Worn float pivot pins. Quote
Young Ed Posted February 27, 2012 Report Posted February 27, 2012 yah, I thought the float level was checked when we rebuilt the carb, but then I changed the needle stop it pushes against and thought it was the same (but maybe not?)....What other reason besides the float being out of adjustment would cause the carb to flood w/ fuel to that level? I can't recall did we have this issue on first start up? Or could it be an issue that started after you changed the needle? Why did you change the needle? Quote
ggdad1951 Posted February 27, 2012 Author Report Posted February 27, 2012 I can't recall did we have this issue on first start up? Or could it be an issue that started after you changed the needle? Why did you change the needle? yah, it was an issue then, we blew it off. When I added the fuel filter upstream of the carb (after the rebuild) I had to change from the flare fitting w/ the "needle" in it to the one that had the NPT on it...no idea if the seats were different. Will have to pull the float and make sure it isn't leaky. Quote
Young Ed Posted February 27, 2012 Report Posted February 27, 2012 I can totally see us doing that. Whats a little fuel leakage during the initial run. Take the float and give it a good shake next to your ear. I think it'd be flooding over worse than it was if the float sunk though. My car did that one spring and it would barely run from all the fuel gushing into the intake. Perhaps there's various levels of sunken floats? Quote
ggdad1951 Posted February 28, 2012 Author Report Posted February 28, 2012 I can totally see us doing that. Whats a little fuel leakage during the initial run. Take the float and give it a good shake next to your ear. I think it'd be flooding over worse than it was if the float sunk though. My car did that one spring and it would barely run from all the fuel gushing into the intake. Perhaps there's various levels of sunken floats? yah, thats the odd thing, once running no more leaky! Quote
Young Ed Posted February 28, 2012 Report Posted February 28, 2012 That leads me towards adjustment rather than leaking float. FYI due to manufacturing differences I've been told to always replace needle and seat together and to readjust the float everytime. Quote
ggdad1951 Posted February 28, 2012 Author Report Posted February 28, 2012 That leads me towards adjustment rather than leaking float. FYI due to manufacturing differences I've been told to always replace needle and seat together and to readjust the float everytime. well sounds like I have to have you over soon then! Quote
IanT_Qld Posted October 2, 2012 Report Posted October 2, 2012 Currently rebuilding my carburettor and found this post useful. The other side has a usefull link to which was most confidence inspiring.in short i have fuel leaking out my accelorator pump. Hopefully a fix of the float level and a slight lowering to compensate for the higher expansion rate of modern fuel and all will be good. Quote
HanksB3B Posted October 2, 2012 Report Posted October 2, 2012 (edited) Wow Ian, Thanks what a find! We also owe a big thanks to Mike from http://www.carburetor-parts.com/Articles.asp?ID=302 I don't currently need a kit (which he sells) but this video will sure make it easy to rebuild my spare some rainy day. Hank Edited October 2, 2012 by HanksB3B Quote
IanT_Qld Posted October 3, 2012 Report Posted October 3, 2012 No worries Hank, I am considering getting a second kit for my spare carbie and rebuilding that. Had dificulty measuing 5/64" even converted it to mm (2), in the end just bent it, seems to have worked, Idiling nicely and ran well, so now for a longer test drive (couple of Ks). What happens if the float is set too low? I guess it can't pick up fuel and starves. and i will have to walk home. Quote
Desotodav Posted October 3, 2012 Report Posted October 3, 2012 I wondered what you were up to Ian as I hadn't heard from you in a while. When are you bringing that truck of yours home? I plan on organising a BBQ to get the trucks together soon - sort of an Oz version of Tim's Clements tailgate BBQ. I had a couple of my carbies rebuilt a while back. I have a good contact for the gaskets, but I haven't found where to get the kits here yet. I saw those youtube clips when they were attached to another tread, they certainly explained things well. You're right about the fuel starving and waking home. Desotodav Quote
IanT_Qld Posted October 3, 2012 Report Posted October 3, 2012 Test drive went well, didnt have to walk home. fiddled with fuel and idle speeds. think i have it right. I assume you have tried rare spares? AutoOne in Stanthorpe is also a rare spares agent, I just assumed he got it from there. BBQ sound Great. I will have to save up for tyres before I tackle a 250km trip down to Brisbane. (lately its been too many work trips to WA, this week I am chewing up my days in Leiu, and its been great just to have several days to do stuff on the truck. TomorrowI will revisit the indicators and parkers. At present i only have indicators. Quote
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