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hard starting after rebuild


bryan b

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Ok, i rebuilt my 97 shee, when i originally started the bike for the 1st time it fired on the 2nd kick. did some tuning and so on. Then i ended up having to replace all the shifting parts. so it sat for a week after it had maybe 2 hrs on the new motor. It would start on 1st kick every time hot or cold. now it will NOT start cold unless you pull the air filter out of the box and completely choke the heck out of it. it will then start. And no it wont start if you use the choke on the left carb. And after that it fires up every time on the 1st kick. Carbs been rebuilt, motors good and fresh, 91 octane 32:1 mix with new plugs, getting good spark, what the hell am i missing here?????????

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Did you rebuild carbs one at a time? They are different. Is the choke tube on? Did you clean the pilots? Are you getting enough gas flow?

 

yes carbs done at same time, both are getting good gas flow. if you do a plug chop on it after you get it started the 1st time its great. Its the initial cold start that is a bitch!and the tube is on and in good shape and all seems to be sealed tight

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forgot to mention it still has the dang tors on it and it doesn't like to idle. seems to always want to rev higher and never idles at the same rpm. does this sound like a vacuum leak of some sort?

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forgot to mention it still has the dang tors on it and it doesn't like to idle. seems to always want to rev higher and never idles at the same rpm. does this sound like a vacuum leak of some sort?

Sound like a pilot. And you said you did them both at the same time, go back through them and make sure you didn't mix up parts. Make sure you don't have the slides in the wrong sides or backwards.

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shit no it doesn't sound like a pilot.....and HELL yes it sounds like you have an air leak. if the bike is starting to "free rev" and wont idle and is fighting starting then you have all the warning signs of an air leak. Quit starting that thing or your going to melt a hole through your new pistons. Do a leakdown and find that leak!!!

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shit no it doesn't sound like a pilot.....and HELL yes it sounds like you have an air leak. if the bike is starting to "free rev" and wont idle and is fighting starting then you have all the warning signs of an air leak. Quit starting that thing or your going to melt a hole through your new pistons. Do a leakdown and find that leak!!!

 

 

 

doing that tonight. il let ya all know what it turns out to be.

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pull the plugs to see if it's lean or rich.

 

 

Didn't get to the leak down test. but the plugs look good. not lean at all far as plugs look. And i put a new set in it when i put it back together so these are not old plugs

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Didn't get to the leak down test. but the plugs look good. not lean at all far as plugs look. And i put a new set in it when i put it back together so these are not old plugs

Did you do a compression test AFTER the top end rebuild ?

 

Still seems like it's not getting enough fuel, creating a lean condition

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Did you do a compression test AFTER the top end rebuild ?

 

Still seems like it's not getting enough fuel, creating a lean condition

 

 

the funny part of this is. When i 1st built it it fired right up. And did for about a week but the shifting stuff was all wore out and it didn't shift worth a hoot, So i tore it apart and it sat for a week before i got the parts in. Put all the shifting stuff in and side case back on and when its cold it has been a total pain to start. if you pull the air filter and hold your hand over the hole it will fire on 2nd kick. then it will start on 1st kick after it warms up.

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