BMW K bikes (Bricks)


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MikeisonTV

MikeisonTV
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Replacing a leaky fuel line and curious what company it is attached to? Should I replace it or flush it while I’m in here? Or leave it alone?Replacing a leaky fuel line and curious what company it is attached to 725f6610


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MikeisonTV

MikeisonTV
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Replacing a leaky fuel line and curious what company it is attached to 314114 This is behind the air filter housing and the other end runs to the bottom of the tank. Maybe it’s a fuel sending unit?

Also I’m not sure how to remove the clamp that’s holding the hose on. It looks like this:Replacing a leaky fuel line and curious what company it is attached to E6ff7710


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MartinW

MartinW
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Mike the object is the fuel pressure regulator sometimes referred to as the FPR. The clamps are called Oetiker clamps and there is a special tool required to fit them, although nail pincher can be substituted with care. They are supposed to be a one shot affair, you can replace them with EFI rated hose clips preferably not the worm drive type. You can either open them up with an appropriate sized flat bladed screw driver or cut them off with side cutters using care. The hose covered with the spring is the vacuum control line which controls the FPR. One of the hoses is the supply line which comes from the fuel rail. The other preformed line is the fuel return line back to the tank. Care has to be taken if you replace the lines as not to kink them or restrict them, especially the fuel return line. I have just experienced a few problems running a non OEM line it kept on collapsing at the bend were it went into the tank. I ended up having to install a spring over this bend, you can still buy the preformed line off BMW at a semi reasonable price in the US about $25.00 US about $50.00 AU. If the lines are hard or cracked it would be advisable to replace them.
Regards Martin.
Replacing a leaky fuel line and curious what company it is attached to Unicoi11


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1992 K75s
    

92KK 84WW Olaf

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You have three different fuel lines. The FPR in the photo, one line is to the fuel tank, the other travels back to the rear of the injector rail. There is a third fuel line between the front of the injector rail and the fuel tank. Replace all three and use the clips from the R series bikes, these can be screwed on and off with a regular screwdriver. They are proper clips for fuel injected lines and you need 6 of them. Make the front lines from the tank about 1 1/2" longer and you won't be disconnecting them to get the electrical box or coolant refill cap.

For the sake of it I use OEM line. If you use OEM line rated for use in petrol you can use the left over bits to replace the fuel line inside the tank. Note that the outside tank line is only rated for petrol internally, it is NOT rated or suitable for IMMERSION in petrol and cannot be used inside the tank. But the line for inside that CAN be used outside it. You need 2 more clips for that too.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

MikeisonTV

MikeisonTV
Silver member
Silver member
Thanks gents. I’ll order the bits now.

Replacing a leaky fuel line and curious what company it is attached to 2749e010
Replacing a leaky fuel line and curious what company it is attached to Ac384010


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Yep! I'm flipping through the air....that ain't good.
    

Inge K.

Inge K.
VIP
VIP
92KK 84WW Olaf wrote:
If you use OEM line rated for use in petrol you can use the left over bits to replace the fuel line inside the tank. Note that the outside tank line is only rated for petrol internally, it is NOT rated or suitable for IMMERSION in petrol and cannot be used inside the tank. But the line for inside that CAN be used outside it. You need 2 more clips for that too.

The line which is made for use inside the tank, should stay inside the tank.
This hose have nitrile rubber both on the inside and outside.
Nitrile rubber have low resistance to ozone, oxygen and sunlight.


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Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

92KK 84WW Olaf

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Inge K. wrote:
92KK 84WW Olaf wrote:
If you use OEM line rated for use in petrol you can use the left over bits to replace the fuel line inside the tank. Note that the outside tank line is only rated for petrol internally, it is NOT rated or suitable for IMMERSION in petrol and cannot be used inside the tank. But the line for inside that CAN be used outside it. You need 2 more clips for that too.

The line which is made for use inside the tank, should stay inside the tank.
This hose have nitrile rubber both on the inside and outside.
Nitrile rubber have low resistance to ozone, oxygen and sunlight.

Thanks IngeK!!!! Didn't think of that. mech


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

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