Question about Suzuki VL 1500 Intruder LC Motorcycles

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I was smelling gas and after closer inspection found gas leaking fron the outside if carb or least that what it seems.

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  • charlievagas Apr 05, 2011

    Thanks, the motorcycle is a 1998 suzuki vl1500lc intruder

  • charlievagas Apr 05, 2011

    Not sure where to add coments. The bike is a 1998 suzuki vl1500lc intruder.

  • charlievagas Apr 05, 2011

    Paul, To be more precise the gas is dripping from outside the carb and dripping onto the engine. there are drips forming on the bottom of the carb it looks like on both sides not sure . never removed a carb before , kinda outside my pay grade.

  • charlievagas Apr 06, 2011

    Thanks but the bike has twin carbs.35mm mukuni. I do know that much. When given options on my fact sheet it only went to 2000 and this is a 1998. which i also list in my comments. Looks like I just blew 16.00 for nothing.

  • charlievagas Apr 06, 2011

    No. Twin 35mm mukuni's. The bike is CARBED!!!

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Hi.
it sounds like the needle valve or the float is sticking, allowing petrol to overfill the float chamber.

i can only give general instructions at the minute as you have not given the make model or age of the bike, but you should be able to follow them ok.
if you want detailed instructions for your bike, just let me know the make model and year.

first,ensure that the fuel is turned off. loosen the clip/s that hold the air filter unit onto the carb and pull the filter unit back.

then undo the front of the carb. this may be a clip around a rubber fitting that pulls off, or bolts depending on model.

the fuel line should have a clip and then twist and pull of the brass fitting.
the throttle cable should go into the top of the carb, the top should unscrew and you can lift up the top, the cable and the throttle slider inside. the slider has 2 slots on opposite sides. remember which side has the thick slot when you put it back.

you should now have the carb off the bike.

turn the carb upside down. petrol will leak out at this point.
there should be 4 screws holding the bottom of the carb on to the main body. remove the screws and lift the body off carefully.
clean the inside of this and make sure the rubber gasket is still in place.
looking at the now exposed inside of the carb, you should see a plastic float held in place with a steel pin that the float pivits on. the pin should push/pull out sideways.
you should now be able to lift the float up but be carefull as on some bikes the needle valve sits in a slot on the float and will lift up as well. if the needle valve is still in the carb just lift it out.

make sure that the needle valve and the seat for it are all clean and the needle does not stick at all, and make sure that the float does not have any liquid inside it.

do not alter any of the brass screws as these will alter the fuel mixture to the engine, or the engine tickover.

reassemble carefully, ensuring that everything is clean and moves freely.

hopefully this will have cured the petrol overflowing, but you may need to get a new needle valve kit if it is worn and still sticky.

sorry i cannot give better instructions, but without the model and age this is the best i can do.
if you let me know the make and model and age, i can give more detailed instructions if you need.

Posted on Apr 05, 2011

  • paul miles Apr 05, 2011

    hi.
    i have just been looking at the parts diagram for your bike.
    the part you are describing is not actually a carb. it is the throttle body for the injector system and has a slightly different setup.

    where the fuel pipe comes into the top of the throttle boby, there are a few connective pipes, and a fuel injector. there are seals on all of the joints here and it sounds like one of those seals is leaking. the fuel in these pipes is already under pressure from the fuel pump in the tank, so any leak must be sorted quickly as there is quite a fire risk from pressurised fuel.
    it appears to need removal of the carb, with the seals all being checked and replaced as needed.
    it should not be a difficult job for a comfident mechanic, but does need to be done properly.
    i get the impression that you are not too confident about working on the fuel system, so i would recommend that you get in touch with a bike workshop, and ask them about doing the work for you. i would also strongly recommend that you do not ride the bike to the workshop, but arrange for the bike to be trailered there, as the petrol dripping on the engine could acually ignite while the bike is being ridden.
    hope this helps

  • paul miles Apr 06, 2011

    fair enough.
    where the fuel line comes in at the top, it still splits for each carb. the seals here could have moved, or the pipe split.
    if not here, follow the original guide, once for each carb.

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