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  #1  
Old 11th June 2018
Darkseacret Darkseacret is offline
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Default Shuts down after 30 miles

Just got my 77 motor (in a 82 xlh) out of shop for points and timing ( was kicking my butt) ran great for a few days . Then 25 -30 miles into a ride it shuts down . after a few moments I get it started and almost home kept bogging. got about 1.5 miles from home and she died .Pushed her home cause I cant leave her. I reset float level and replaced petcock and line. Charged battery and all was well .Had a couple short rides . Until I go 25- 30 miles out again and dies in almost the same spot ! This time she didn't fire again and after charging battery she wont fire?? I plan on a new battery today to start and I had tried a different coil but that was on "old" battery ?
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  #2  
Old 11th June 2018
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ryder rick ryder rick is offline
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Gas cap / check tank venting? Ride it till it quits, loosen gas cap. Try again.
A non-vented cap on a non-vented tank will do exactly that.

If it quits in 30 miles ride it out 15 miles then turn around and it should quit near home so you don't have to push it so far. Don't grind away on the starter till the battery goes flat. If it has a good tune up in it it will start right up. If it does not start something is wrong, too much fuel, not enough fuel, no spark.

rule #1 don't work on the fuel system for an electrical problem

rule #2 don't work on the electrics for a fuel problem

rule #3 don't change parts to fix something, you diagnose the problem, not get out the parts shotgun. If you go swapping parts and fiddling with everything, you increase the likelihood of introducing more problems. Check for spark, check for fuel. Changing parts is a last resort.


Observation - if you have to take your bike to a shop to get points installed, expect to spend lots of money at the shop and an equal amount of time beside the road waiting to get picked up. Get a factory service and parts manual and learn to fix your own bike.

I never go on test rides without a cell phone in my pocket.
I rarely go on test rides without a handful of tools.

TOOLS are like a magic talisman if you carry them you rarely need them.

My daily rider has a tool bag on it that has almost everything I need to take the entire bike apart and put it back together in a 4"or 5" roll. I don't recall ever needing them, others are in my debit because I do carry them. :^)
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  #3  
Old 11th June 2018
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So, you had to charge the battery? Old battery or brand new? Maybe add to rick’s list a charging system check...
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Old 11th June 2018
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Cracked Coil?
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Old 11th June 2018
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Lotsa good info from ryder rick (especially point #3), doodah man and MDT.
Could not give rick more rep points until I spread it around more.

My two cents:

Ran OK after battery charged. That does not discount a possible vacuum on the tank or cracked coil, but it is a very strong clue.

What is battery voltage (a) key off, (b) key on, while pressing start button? Should be greater than 10.5 for (c).

If you can get it started, what is battery voltage (d) at a fast idle? Should be 13.8 to 14.8.
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Old 11th June 2018
sltm1 sltm1 is offline
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Start with the cheap stuff 1st, like ryder rick said, a bad gas cap could be the problem, it was on mine, but I could only go about 5 miles before it quit on me. The po had installed a hand cut piece of soft plastic to replace the rubber washer.
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Old 11th June 2018
Darkseacret Darkseacret is offline
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Default

Thank you for the input,
About points , I have a manuel and watched YouTube videos on how but when it came time to advance cam lobe it was frozen and I was stumped after not riding for 2 weeks prior I threw in the towel .


I had checked for gas cap vapor lock ,opening a few times going down the road to check that of list , don't think so as bowl was full after checking and bike still wont start.

Battery is old and been recharged several times , replacing first .

I switched out coil for a spare from my 77 waiting on jugs . tried to start with "old "toped off battery .

I pulled rear plug and saw a faint spark after fresh recharge on "old battery"
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Old 11th June 2018
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My ole Kawasaki does that.. My buddy thinks it is heat related as when it cools off it fires. Hmm, coil opening up under heat? I will never run a wet cell battery again. My Kawasaki has pickup coils and not points so we thinks it may be that.
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Old 11th June 2018
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Sure did sound like gas cap until I noticed that you already tried that.


Great advice so far, I'm subscribing to see where this goes.
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Old 11th June 2018
sltm1 sltm1 is offline
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Here's another "cheap" idea, perhaps the lower part of the petcock screen is blocked and when you get lower on gas the carb gets starved?! Checked the condition of your tank lately and do you run a inline filter, it my be clogged also.
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