|
Post by barry01 on Mar 20, 2020 14:53:04 GMT 1
Hi lads first time post. Hard starting when cold. Now both my float bowls have a hole to the choke jet. One has a 1 stamp other has 2. The No1 looks a little bigger but neither work.am I right thinking No1 is for the left carb with choke plunger in.can you get a bigger jet. Using k&n not the original box.
|
|
|
Post by shaunthe2nd on Mar 20, 2020 15:24:51 GMT 1
I'm not sure what the 1 and 2 refer to but only the choke side has the little hole in the bowl so sounds like you have 2 choke side bowls. Do a search on here I'm sure that a member called OEB put up a good picture showing the left and right bowl differences.
|
|
|
Post by oldelsieboy on Mar 20, 2020 15:36:18 GMT 1
I'm not sure what the 1 and 2 refer to but only the choke side has the little hole in the bowl so sounds like you have 2 choke side bowls. Do a search on here I'm sure that a member called OEB put up a good picture showing the left and right bowl differences. Float bowl for choke carb. The starter jet pick up hole is circled. Float bowl for no choke. OEB
|
|
|
Post by shaunthe2nd on Mar 20, 2020 15:37:42 GMT 1
Just checked, the 1 is non choke side so if you have a hole in this one it's been drilled by someone. Try filling it with araldyte or similar. The 2 is the choke side one and should have a hole.
|
|
|
Post by barry01 on Mar 20, 2020 15:41:00 GMT 1
No 2 was on choke but hard to start No1 does have a hole. You would think 1 was for choke. Can I up the choke mixture
|
|
|
Post by barry01 on Mar 20, 2020 15:42:30 GMT 1
Is No1 has a hole now surly it would not effect starting as no hole for fuel to go to choke jet
|
|
|
Post by midlifecrisisrd on Mar 20, 2020 16:48:44 GMT 1
Daft question but do you have the choke link pipe fitted between the carbs?
Steve
|
|
|
Post by shaunthe2nd on Mar 20, 2020 16:55:12 GMT 1
Not sure about that, but will eliminate one thing if you do fill it as it should be. Or swap for another bowl.
Also check the cross tube is fitted between the 2 carbs and is a snug fit at both ends. Also check for air leaks as that would lead to poor starting. Common place is on inlet rubbers between carb and head.
Also worth cleaning behind yr balls whilst you have the carbs out - lots of threads on here about that.
Good luck with it.
|
|
|
Post by shaunthe2nd on Mar 20, 2020 16:55:54 GMT 1
Steve beat me to it re cross tube!
|
|
|
Post by barry01 on Mar 20, 2020 17:21:06 GMT 1
X tube all good. Just changed gaskets on reeds. Seen post about balls but was a little unsure whether to do it. Is that for choke behind there. Also as I have asked can the jet itself be changed
|
|
|
Post by barry01 on Mar 20, 2020 17:32:46 GMT 1
Also is it behind both balls you clean on each carb. Post I read only mentioned the bottom one
|
|
|
Post by shaunthe2nd on Mar 20, 2020 17:40:19 GMT 1
The air correction circuit is behind the ball in question. Its the bigger 4.5mm dia one at bottom of both inlet. Need to do both carbs. The passageways behind clog up and affect performance somewhat. Not sure if its choke related, but definitely worth doing as will improve things no end. Easy to do, and as you have carbs off already why wouldn't you. In fact i'd strip them completely and ultrasonically clean and reassemble to eliminate that too. Strip them one at a time so as you don't mix up the parts, as that will give you problems. Whilst at it, check the sliders were correctly fitted as they are different. easy way to check is to make sure you can see the pip on the side of the slider in the sight glass, if not they have been switched.
|
|
|
Post by barry01 on Mar 20, 2020 18:08:14 GMT 1
Pip?. Ok will do them tomorrow
|
|
|
Post by barry01 on Mar 20, 2020 18:09:09 GMT 1
Also if wrong slid in surly the cut out would be on the engine side instead of air side
|
|
|
Post by shaunthe2nd on Mar 20, 2020 18:16:21 GMT 1
Pip?. Ok will do them tomorrow By pip i mean the small hole drilled in the side of each slider, about half way down. You are supposed to be able to see them through the sight glass. i usually dob a bit of paint (white or red) to make them more visible as a lot of the sight glasses are misted up. The primary use is to balance the carbs. If you switch them between carbs you will know as you wont see the pip! Just check they are correctly fitted as can be switched.
|
|
|
Post by barry01 on Mar 20, 2020 18:32:08 GMT 1
Yes they are in correct. But I do have bowls on wrong way round as both drilled maybe previous owner had problems so drilled other bigger to try and fix it. I am thinking balls out for lock down
|
|
|
Post by Gitram on Mar 21, 2020 1:45:51 GMT 1
just for more fun.. knock out the emulsion tubes and clear any wee bits of crud from the holes in them..
marti
|
|
|
Post by barry01 on Mar 21, 2020 14:00:38 GMT 1
Do you just lever pin out with something then knock tubes out
|
|
|
Post by midlifecrisisrd on Mar 21, 2020 14:22:52 GMT 1
Do you just lever pin out with something then knock tubes out Unscrew the main jet, remove the washer under it then screw the jet back in finger tight Then tap the main jet inward to the carb body The emulsion tube should then move into the slide area Steve
|
|
|
Post by peter007 on Mar 21, 2020 14:27:01 GMT 1
Do you just lever pin out with something then knock tubes out Do you have workshop manual ? if not you really should buy one . Carburettors are very delicate instruments, don't just go levering and knocking parts as you will undoubtedly damage your carb beyond repair and replacements are rare and pretty priceless tbh .To remove the emulsion tube take the carb top off then invert the carb body slacken the man jet halfway and gently tap the main jet to loosen the tube , then remove the main jet and its washer and CAREFULLY with a pozi screwdriver resting in the hole where the main came from (so as not to damage the thread) gently tap it out . Then clean it carefully with a fine piece of brass wire . When replacing the tube take note there is a groove on its side to coincide with a pin inside the carb body , you might have to very gently with a not metal object tap it down into its seat so you can refit the main jet and its washer . hope this helps ,Pete
|
|
|
Post by peter007 on Mar 21, 2020 14:27:42 GMT 1
you beat me to it steve lol
|
|
|
Post by Gitram on Mar 21, 2020 16:43:24 GMT 1
you both beat me to it.. cheers
marti
|
|
|
Post by barry01 on Mar 21, 2020 18:06:35 GMT 1
All done found only had a 20 slow jet I had a 22.5 and a 27.5 gone with 22 for now put float bowls right way round removed balls. All clean behind there. Ultra sonic clean all back together bigger to start but think was a fuel delivery problem. Had in running balanced carbs ticks over great got it warm turned off. Tomorrow I find out if it worked.BBy the way they are 4L1 00 carbs
|
|
|
Post by oldelsieboy on Mar 21, 2020 18:13:11 GMT 1
All done found only had a 20 slow jet I had a 22.5 and a 27.5 gone with 22 for now put float bowls right way round removed balls. All clean behind there. Ultra sonic clean all back together bigger to start but think was a fuel delivery problem. Had in running balanced carbs ticks over great got it warm turned off. Tomorrow I find out if it worked.BBy the way they are 4L1 00 carbs 4L1-00 carbs should be fitted with 20 pilot jets, 190 mains, 4N10 needles & O-6 needle jets (emulsion tubes) OEB
|
|
|
Post by barry01 on Mar 22, 2020 9:05:46 GMT 1
Well started 2nd kick this morning.but two small leaks from over flow and its new valve and seats and float height correct. Think I will leave it for a few days and test before remove carbs again
|
|
|
Post by barry01 on Mar 22, 2020 9:40:32 GMT 1
Not got a manual yet. Are the emulsion tubes meant to be different. Choke one has a higher bit to the air side. Looking for new ones only can find the other one
|
|
|
Post by barry01 on Mar 22, 2020 9:47:16 GMT 1
Can't work out how to put photos up
|
|
|
Post by beardy on Mar 22, 2020 10:05:34 GMT 1
Neither could I. Then someone suggested Tapatalk and now it’s easy.
|
|
|
Post by oldelsieboy on Mar 22, 2020 10:19:41 GMT 1
|
|
|
Post by shaunthe2nd on Mar 22, 2020 12:12:15 GMT 1
Muttsnuts also stocks them I think. Sounds like you have 2 cobbled together carbs rather than a matched pair.
|
|