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Engine Trouble UnHappy Happy Time (engine wont start)

Zev0

Member
Joined
Jan 6, 2008
Messages
698
Ok, engine has 150 miles on it. Rode it Saturday morning to the post office. Maybe 1 mile each way. Came home and parked it. Forgot to shut off the gas. Well, to make a long story short. Sunday I pedaled my butt off all day trying to get it to start. Wouldn't even fire once. I figured it was flooded from the gravity feed being open for over 24 hours. Tried to start it without gas turned, full choke, no choke. Man, I couldn't pedal anymore, so I turned off gas and parked it. Monday morning, same scenario. No go. I thought that it being flooded, which it probably is, letting it sit awhile, like a car, it would start. Well, it won't. I'm at the end of the 2nd day and still no go. Any simple ideas? I'm not the most mechanically inclined person in the world, so don't go to far in depth. But any ideas would be appreciated.
 


M

mickey

Guest
Got spark? You might also try turning the bike over (gas tank off) with the sparkplug out to see if the crankcase is full of stuff.

Edit: I guess you'll need to spin the rear tire to get the piston to uncover the transfer ports.
 

srdavo

Well-Known Member
Joined
Nov 4, 2006
Messages
3,158
hey Z,

try this....take out the spark plug. Is it wet?
take the bike outside, and put out your smoke....haha
with the plug still out, roll the bike forward with the clutch out, to turn the engine over & see if it pukes gas out of the sparkplug hole. If so, your block is prolly full of fuel. you can keep rolling it till it stops puking or, I suppose you could tip the bike & let it drain? I like the puke method...haha

then try to start normally. maybe a fresh sparkplug, if ya have one.
 

BoltsMissing

Active Member
Joined
Jan 31, 2008
Messages
897
Howdy Z
While you are at it with the spark plug, if you have not already done so, even after it starts with the current plug, and that plug is still the HT plug, change to a new spark plug, NGK B6HS.

All the Best

BoltsM
 

graucho

Active Member
Joined
Feb 14, 2008
Messages
1,741
Good ideas above, Then check all of the "freak of luck" things it could be. Wire popped loose. Kill switch cra**ed out. Gas all drainned out of tank, now your empty. Plug wire to CDI wiggled a little loose.

Remove plug, drain block if needed, put in 3 drops of 2 cycle oil in hole. Ride two blocks with plug still out in gear to air evaporate out the cylinder. Dont go much further unless you add a few more drops of oil. New plug B6HS .030"
 
F

funker

Guest
Got spark? You might also try turning the bike over (gas tank off) with the sparkplug out to see if the crankcase is full of stuff.

Edit: I guess you'll need to spin the rear tire to get the piston to uncover the transfer ports.
I was thinking in the same idea! empty the gas tank, take the sparkplug out, turn the bike over, and left 1 day or 2. I have flooding problems with my old carb (stock), and when it finally start, big explosions sound came from the engine. I recommend to every one, buy a Dellorto SHA1412 (or imitations) for the HT engines. 90% of the problems disappear, and make an easy starter and automatic release of the choke too.
Tell how the story goes.

Regards

Leo
 

azbill

Active Member
Joined
Dec 15, 2006
Messages
3,721
I almost never remember the petcock :eek:
I don't think it has ever filled the crankcase
isn't the float rising going to stop fuel from entering carb ?
 
H

hot70cc

Guest
Kill switch most likely, remove it completly then try again. hope it works for ya.
 
F

funker

Guest
isn't the float rising going to stop fuel from entering carb ?
It suppose to, but with the HT stock carb it's a very common problem that the float (well technically not the float) does not shut off the fuel entering to the carb, causing flooding and fuel leaking, even in the higher quality kit (yes, there different quality kits of HT), this problem still remains.
In my particular case, and by the position of the engine in the V of the frame, the fuel leaking tend to go INTO the engine rather than leaking outside (all of these if i do not close the fuel valve), making almost impossible to start, and when it does, making tremendous explosions product of the dropped fuel in the crankcase.
 
Last edited by a moderator:
F

funker

Guest
Howdy Z
While you are at it with the spark plug, if you have not already done so, even after it starts with the current plug, and that plug is still the HT plug, change to a new spark plug, NGK B6HS.

All the Best

BoltsM

Im using the NGK B6HS sparkplug too without any problem, good tip :)
 
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