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Leaky tank and dragging brake
Well, looks like my XS is going to stick around in my garage for awhile... it doesn't want to leave! Started to mark its territory leaking from the fuel sender area on the bottom of the tank. I previously used some fuel tank JB weld to try and stop this, replaced the sealing washers for the unit... no bueno. Back to the table. Also, seems the front calipers are hanging up. Tried clearing the splooge hole. No dice. Will have to pull the caliper and see whats going on with the pistons. I just put a new caliper kit and pads on both the fronts.
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Easy test is to crack one of the bleeder screws open and if it unbinds, it's the master cylinder spooge hole that is plugged. No change then it is a caliper(s) problem.
There is also a slight chance of it being a plugged up brake line, especially if you still have the old type rubber lines.Last edited by bikerphil; 06-09-2025, 10:25 AM.2H7 (79) owned since '89
3H3 owned since '06
"If it ain't broke, modify it"
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Yep, that hole is like .010", a guitar string or maybe a bristle from a wire brush will clear it.2H7 (79) owned since '89
3H3 owned since '06
"If it ain't broke, modify it"
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Seems to have fixed it, although waiting on the mail for my tank gasket. Bike was for sale... I think I will keep it kicking around. Nobody wanted it for little money. It is low mileage in good shape. No harm having it for awhile. As you all know, they are as solid as an old bike comes. Hopefully 2nd gear holds. Always my concern in the back of my head. Then again, I enjoy the wrenching too. I noticed lately when the bike is hot I need to blip the throttle start it. Not when cold. Cold on choke and half choke it runs well. But needs a little help to start hot. What do you think that is about. I don't think I am lean on idle....Comment
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My guess is going to be that you are lean on idle. You don't have the pilot jet screws tuned in. When hot these bikes should start right up if you have a fully charged and healthy battery.2 - 80 LGs bought one new
81 LH
02 FXSTB Nighttrain
22 FLTRK Road Glide Limited
JimComment
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Most carbureted motorcycles like the throttle to be cracked a bit when started hot.-Mike
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'79 XS1100SF 20k miles
'80 XS1100SG 44k miles
'81 XS1100H Venturer 35k miles
'79 XS750SF 17k miles
'85 Honda V65 Magna ~7k miles
'84 Honda V65 Magna 48k miles (parts bike)
'86 Yamaha VMAX 9k miles
Previous: '68 Motoguzzi 600cc + '79 XS750SF 22k miles +'84 Honda V65Comment
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Bike idles and runs great.. I don't want to fiddle with the carbs. I will leave it, just a point of curiosity. My 95 Sprint needs nothing to start when hot.Comment
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Fuel injection and carbs are two different things! My FI motorcycles always started and ran great, with VERY little work needed. Carburetors need adjustments as they age. Multiple carbs, as on the XS1100, need to be "synchronized" almost yearly, or more often if you ride a lot. That is part of owning and old bike.Ray Matteis
KE6NHG
XS1100 E '78 (winter project)
XS1100 SF Bob Jones worked on it!Comment
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For what its worth, my '79F also needs some jockeying of the throttle to restart after a heat soak restarting it hot. I may end up monkeying with the idle mixture a bit, this is with a fresh valve adjustment and good carb sync, stock jetting. For now I just chalk it up to the nuances of old bike ownership.'79 XS1100F
others: '95 XLH1200, '98 GSF1200S
Past Yamahas: '78 XS1100E, '76 XS500CComment
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Brakes are fixed, although they are pulsing with heavy braking. Gas tank is not. Very frustrated on that one... got the new rubber gasket in there... still weeping. I used copper sealing washers for the screws... perhaps I need a fuel resistant nylon. Its very hard to tell where the fuel is coming from. It may be coming from the area where the one lead attachs.Comment
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