ls6pilot Posted January 27, 2019 Report Share Posted January 27, 2019 Fuel leaking where fuel line enters right carburetor. Appreciate advice on eval and fix. Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted January 27, 2019 Report Share Posted January 27, 2019 If it's the fuel hose at the clamp either tighten the clamp or trim the hose and then re-clamp. If it's the Banjo bolt fitting then tighten that down. It has 3 crush washers. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted January 27, 2019 Report Share Posted January 27, 2019 If it is the stainless line check it over for cracks. I believe that is the reason Rotax switched to the Teflon hose. You can try tightening the nut. I had one once that leaked after maintenance. I had to remove the line from the fitting, and the fitting from the carb and re-seal. Quote Link to comment Share on other sites More sharing options...
ls6pilot Posted January 27, 2019 Author Report Share Posted January 27, 2019 Any tips for getting a wrench on that nut? Seems like air intake hardware is in the way. I got it off and see no cracks but difficult to get a wrench down on it to tighten Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted January 27, 2019 Report Share Posted January 27, 2019 I normally take off the starting carburetor to make room. Quote Link to comment Share on other sites More sharing options...
ls6pilot Posted January 28, 2019 Author Report Share Posted January 28, 2019 Thanks, I will remove the starting carb and try tightening the nut over the fuel line connection. Should one use loctite 567 on this ? Rich Quote Link to comment Share on other sites More sharing options...
Buckaroo Posted January 28, 2019 Report Share Posted January 28, 2019 4 hours ago, Tom Baker said: I normally take off the starting carburetor to make room. What is the “starting carburetor”? Never heard that used. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted January 28, 2019 Report Share Posted January 28, 2019 17 minutes ago, Buckaroo said: What is the “starting carburetor”? Never heard that used. Sometimes called a choke, nut it is not really a choke. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted January 28, 2019 Report Share Posted January 28, 2019 I will look the sealant up in the morning, if someone else has not posted it yet. Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted January 28, 2019 Report Share Posted January 28, 2019 I agree with Tom. Remove the choke with the 4 screws and you should be able to get a wrench in there and make this fitting nice and tight. Part of the problem with the stainless line is moving or pushing it around can cause leaks. Not real common, but it can happen. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted January 28, 2019 Report Share Posted January 28, 2019 The sealant for the fitting to the carb is Loctite 243. There is no sealant between the line nut and fitting. There is also a 950-141 gasket ring under the fitting. If tightening the nut doesn't stop the leak remove the line and fitting and re-seal the fitting with the Loctite and a new gasket ring. Torque is 90 in/lb. Sometimes the line nut wants to loosen the fitting instead of breaking loose from the fitting. You will need to try and hold the fitting to loosen the nut. PS: there is a thin gasket 950-030 under the starting carb, and it is not uncommon to have it tear if it has been on a long time. The 4 screws also get the 243 Loctite. Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted January 28, 2019 Report Share Posted January 28, 2019 There are times I'm well past 90 in/lbs for this fuel nut, but it never leaks. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted January 28, 2019 Report Share Posted January 28, 2019 36 minutes ago, Roger Lee said: There are times I'm well past 90 in/lbs for this fuel nut, but it never leaks. The 90 in/lb is for the fitting in the carb, not the line nut. Quote Link to comment Share on other sites More sharing options...
WmInce Posted January 28, 2019 Report Share Posted January 28, 2019 Great tips! Quote Link to comment Share on other sites More sharing options...
procharger Posted January 28, 2019 Report Share Posted January 28, 2019 you can grind a socket down kind of thin and get it on bolt Quote Link to comment Share on other sites More sharing options...
ls6pilot Posted January 29, 2019 Author Report Share Posted January 29, 2019 Removed the starting carb. Was able to tighten the line nut snugly and all is well. Thanks for all the help. Quote Link to comment Share on other sites More sharing options...
cdarza Posted May 12, 2021 Report Share Posted May 12, 2021 Whilst trying to stop a very minor leak on the fuel connection (stainless tube to carb), I tried to re seat the stainless tube and tighten the nut - I seem to have made it worse and can't get it to stop. I think I give up and am gonna order the new Teflon hose. Question though. My fuel cut off is in the off position yet there is a small amount of fuel continuously dripping from the unconnected stainless fuel line. Does this mean my fuel cut off is not good (leaking)? Looks like I'm gonna be grounded awhile -hose not available until mid July.. The hose (as listed on CPS 874-911) is just the hose correct? I also need to order the attachments like banjo bolt, gasket ring etc etc. ?? Anyone have a list as I wanna be sure my order is complete... ? Thanks Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted May 12, 2021 Report Share Posted May 12, 2021 Leading Edge Airfoils has the hose in stock, but better yet when I was looking I came across this. https://www.leadingedgeairfoils.com/flexible-retrofit-kit.html It has everything you need plus a couple extra items, plus it is less expensive. It also shows in stock at CPS for the same price. Quote Link to comment Share on other sites More sharing options...
Roger Lee Posted May 12, 2021 Report Share Posted May 12, 2021 Does your metal line have the leak under a crush washer or where the metal line itself goes into its end fitting? Maybe a crack in the matal line where it inserts at the end there? Using the newer teflon hose from Rotax is better. Rotax wanted everyone to switch over many years ago. When using the teflon hose. The assembly goes like this for the crush washers. Take the banjo bolt and slide on a washer, then slide the hose end on the bolt, then another washer, then the spacer and then the last washer. I have never seen a fuel leak here that can't be stopped. ROTAX 912 UL FUEL PUMP ASSEMBLY _ FUEL HOSE ASSEMBLY _ AIRBOX ASSEMBLY _ California Power Systems.html Quote Link to comment Share on other sites More sharing options...
cdarza Posted May 12, 2021 Report Share Posted May 12, 2021 It looks like the leak is coming from the metal line where it goes into the fitting (not where the crush washer is into the carb) Thanks very much for the parts and lead where can order. It takes a close to a month just to get from USA to here Quote Link to comment Share on other sites More sharing options...
FlyingMonkey Posted May 13, 2021 Report Share Posted May 13, 2021 On 5/12/2021 at 9:17 AM, Tom Baker said: Leading Edge Airfoils has the hose in stock, but better yet when I was looking I came across this. https://www.leadingedgeairfoils.com/flexible-retrofit-kit.html It has everything you need plus a couple extra items, plus it is less expensive. It also shows in stock at CPS for the same price. $620 for a foot or two of teflon hose and some fittings...GAH!!! Quote Link to comment Share on other sites More sharing options...
Animosity2k Posted May 13, 2021 Report Share Posted May 13, 2021 1 hour ago, FlyingMonkey said: $620 for a foot or two of teflon hose and some fittings...GAH!!! Holy cow that's insane! Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted May 13, 2021 Report Share Posted May 13, 2021 4 hours ago, FlyingMonkey said: $620 for a foot or two of teflon hose and some fittings...GAH!!! What's worse is that it is $783 just for the hose by itself. Quote Link to comment Share on other sites More sharing options...
cdarza Posted May 14, 2021 Report Share Posted May 14, 2021 8 hours ago, Tom Baker said: What's worse is that it is $783 just for the hose by itself. Oh yeah ! So thank you again for the link - you saved me some $$$ and at least a month extra downtime. Gracias!! (i think i also got the last hose in stock- after my order it went to backordered. Quote Link to comment Share on other sites More sharing options...
cdarza Posted June 17, 2021 Report Share Posted June 17, 2021 A month later, finally got the fuel hose and installing tomorrow - Just want to confirm- the Banjo Bolt (that connects the fuel line to the carb) has a torque of 90in.lb correct ? This also applies to the banjo bolt on the clamp block? Quote Link to comment Share on other sites More sharing options...
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