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Ltz 400 will only push start

  #21  
Old 05-29-2018, 02:20 AM
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You don't say how long since you set the valves. Check for a spark, and check compression again, if there is no spark, you have the dreaded "only sparks when I take my finger off the button" problem, no known cure. If compression is down, re-set the valves.
 
  #22  
Old 05-29-2018, 05:05 AM
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Originally Posted by merryman
You don't say how long since you set the valves. Check for a spark, and check compression again, if there is no spark, you have the dreaded "only sparks when I take my finger off the button" problem, no known cure. If compression is down, re-set the valves.
it’s been about 2 weeks ago. With maybe 4-5 hours of riding time before the problem started again. And what the dreaded only sparks when I take my finger of the button??
 
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Old 05-30-2018, 01:06 AM
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"only sparks when I take my finger off the button?"

Exactly what it says, you take the plug out, re-fit the cap and spin the engine over on the starter to check for a spark, and:- it only sparks when you take your finger off the button.

If the valve has closed up again, sounds like a problem, and it may be best to take the head off and check why it is doing so. Loose valve seat? Stretching valve?
 
  #24  
Old 12-16-2018, 03:22 PM
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Default hi mucky could you help me with my quad pls

Originally Posted by ltz400bigbore
yea i got a ltz 400 and it sat for like 2 mouths and i got it out and electric stater will not fire it up i went out got new battery and spark plug but if i push start it it fires right up with no problem and runs good and after your drive it for 10 min and stall it elctric starter will fire it up i clean carb out and every thing what else should i do help plz
Originally Posted by mucky
check your fuel petcock in the tank, it only works with a vacuum from the carb, turn it to prime and see if it will start then, or you could still have a dirty carb. plugged jet, defective fuel needle valve or like what was said before stuck valve or misadjusted valves
it’s a ltz 400 it’s just had engine rebuild run in for about 8 hours been out for 5 hours since just before I was about to come home it started to splutter I’ve cleaned the carb and it’s got Fresh petrol and the carbs filling fine it’s got a lovely spark just turns over then back fires what else could it be please ? Thanks John
 
  #25  
Old 12-18-2018, 07:53 AM
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Like mentioned in that old thread... maybe check the valve clearances.
 
  #26  
Old 08-04-2022, 10:20 PM
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Originally Posted by ltz400bigbore
yea i got a ltz 400 and it sat for like 2 mouths and i got it out and electric stater will not fire it up i went out got new battery and spark plug but if i push start it it fires right up with no problem and runs good and after your drive it for 10 min and stall it elctric starter will fire it up i clean carb out and every thing what else should i do help plz
same thing happens to mine
 
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