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Post by steve888 on Aug 21, 2014 9:06:45 GMT 1
Hi all , I have finally got round to having a look at my lc2 so I decided to give the carbs a clean and stop the petrol dropping straight out the overflow ! My problem is that I think the float bowls have been mixed up as the one with the small brass jet has been fitted to the carb without the choke . Common sense tells me this is wrong , there again I don't have much sense anyway. I'm sure that most of you probably know the answer but I'm still new to the mysteries of elsie. Any help would be kindly appreciated . Regards Steve.
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Post by steeley on Aug 21, 2014 10:02:01 GMT 1
steve hi,yes the float bowl with the brass jet in the bottom goes on the choke carb.
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Post by Delbert on Aug 21, 2014 14:28:19 GMT 1
As above & the carb slide for the choke side has a cut out on the top of it also  |
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Post by JDH on Aug 21, 2014 21:39:03 GMT 1
Just found exactly the same problem on my F2. I have stripped the carbs down to sonic clean them and found the float bowl with the tiny little brass jet in it was on the non chocke carb. The non choke carb does not have the brass pipe in it that matches up with float bowl.
The blank float bowl, should match the blank hole on the body of the non chocke carb. don't know if I've made sense.
also, one air bleed screw was at 2 turns out and one at half out.
and one carb slide had a 4mm gap/opening and the other had a 1 mm gap.
only thing I found correct is the float hieghts.
No no wonder it runs like pig unless it's at full throttle. Also flat as a fart off full throttle.
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Post by midlifecrisisrd on Aug 21, 2014 21:46:20 GMT 1
Just stripped and cleaned a pair of 31k carbs
Was never going to have this problem, both carbs have left float bowls with the jet lol
Steve
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Post by steve888 on Aug 31, 2014 16:00:54 GMT 1
Thanks for all the advise all . I have got the bike back together but the left cylinder refuses to run properly so I'm gonna take the plunge and get the crank rebuilt as I think the seal has probably gone hard.
Steve.
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Post by jackjabba on Sept 2, 2014 9:13:22 GMT 1
Had an air side seal go on my LC, got mixture coming from behind the flywheel after the bike stood overnight. Bike would still run ok, except would hold onto revs after shutting the throttle, revs slowly dropping back to idle and then idle would be all over the place.
I would re visit your carbs before breaking down the motor.
Had a friend who checked his seal by spraying a bit of damp start around the stator while the engine was running, if the engine picked up the seal was shot, if it didn't change revs , likely it was ok. Others on here may confirm this as a good way to test.
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Post by muttsnuts on Sept 2, 2014 10:30:47 GMT 1
yes you can check the stator side seal that way, or use wd40 or the likes as well, basically if the engine tone changes when you spray stuff onto the seal its a pretty good indicator there is a problem
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Post by shergar on Sept 2, 2014 22:45:15 GMT 1
steve hi,yes the float bowl with the brass jet in the bottom goes on the choke carb. by any chance would you have a picture of the bowls and show the diff ? cheers paul |
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Post by shergar on Sept 2, 2014 22:46:53 GMT 1
As above & the carb slide for the choke side has a cut out on the top of it also sorry again would you have a pic of what you mean mate ? cheers paul |
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Post by Delbert on Sept 3, 2014 20:46:48 GMT 1
As above & the carb slide for the choke side has a cut out on the top of it also sorry again would you have a pic of what you mean mate ? cheers paul Sorry mate I don't , I can't find my old slides either or at least the choke side .. if you look at the top of them the right hand carb slide is symmetrical all the way round , where as the left one has ( iirc) two small squares cut out opposite each other to allow air to pass ,,, may be some one has a pic ,, O.E.B ?? |
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Post by steve888 on Sept 4, 2014 7:35:01 GMT 1
Thanks for the tip about the seal , I will give it a go at the weekend .
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Post by steve888 on Sept 4, 2014 8:10:51 GMT 1
Sorry , I forgot to ask . If the seal has hardened does the crank need a full rebuild or can the seals just be replaced ? The reason I ask is that the motor only has 19k on the clock and has never been out of the frame before so I would quite like to keep it standard . Regards Steve
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Post by shergar on Sept 4, 2014 22:07:00 GMT 1
Hi all , I have finally got round to having a look at my lc2 so I decided to give the carbs a clean and stop the petrol dropping straight out the overflow ! My problem is that I think the float bowls have been mixed up as the one with the small brass jet has been fitted to the carb without the choke . Common sense tells me this is wrong , there again I don't have much sense anyway. I'm sure that most of you probably know the answer but I'm still new to the mysteries of elsie. Any help would be kindly appreciated . Regards Steve. i can see the diff in the slider at the top for the choke side now ( never new there was a diff to be honest ) but on the diff bowls are you talking about the thin brass jet that sticks up its about 20mm in height ( carb side ) and the other bowl has just a hole in it , if this is correct i just thought i was missing one so i fitted one into the hole from another set of carbs i had ( me thinks i got it wrong ) , any advice , cheers |
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Post by shergar on Sept 4, 2014 22:10:06 GMT 1
sorry again would you have a pic of what you mean mate ? cheers paul Sorry mate I don't , I can't find my old slides either or at least the choke side .. if you look at the top of them the right hand carb slide is symmetrical all the way round , where as the left one has ( iirc) two small squares cut out opposite each other to allow air to pass ,,, may be some one has a pic ,, O.E.B ?? cheers del have have that sorted now mate thanks but still not sure on the jet in the bowl ? any advice ? |
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Post by oldelsieboy on Sept 5, 2014 8:29:15 GMT 1
These are 4L0 carb float bowls but I think the LC2 are similar. The choke side float bowl has a small brass jet fitted in the hole circled in red. CHOKE BOWL  The non choke float bowl has no jet. NON CHOKE BOWL  HTH OEB |
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Post by shergar on Sept 5, 2014 8:58:24 GMT 1
its a 31k i have is it the same idea on them ?
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Post by oldelsieboy on Sept 5, 2014 9:11:00 GMT 1
its a 31k i have is it the same idea on them ? LC2 is 31k OEB |
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Post by shergar on Sept 5, 2014 9:18:16 GMT 1
sound will check it out mate , just on setting the float heights steve , its a bitch to get them correct with the ruler method , iv set up the fuel pipe on the side method but to be honest if you were to go by that they would not be set at 21 i think its more like 18ish whats your thoughts on this mate ? paul
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