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Old 10-03-2012, 11:15 AM
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ProStreetCamaro ProStreetCamaro is offline
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Old 99 Lazer hp suddenly wont start

Our old faithful 1999 48 lazer hp with the 18hp kohler suddenly wont start. It cranks over fine it just will not fire up today after yesterdays torrential downpours. I pulled the plugs and they are dry. I tested for spark and it has spark. Put the plugs back in and drained the bowl in case it had any water in it. I shot it with starting fluid and still will not start.

Can it be flooded yet the plugs are clean and dry? I would think even if it was flooded the starting fluid would at least make it burp or something. It acts like the carb is not letting anything into the engine.

Anybody have any ideas?
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2013 Gravely 460Z 29EFI
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Old 10-03-2012, 11:21 AM
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piston slapper piston slapper is offline
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Check your compression...
Did it backfire...might have sheared the flywheel key...
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Old 10-03-2012, 11:32 AM
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Quote:
Originally Posted by piston slapper View Post
Check your compression...
Did it backfire...might have sheared the flywheel key...
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I dont have a compression checker. I need to invest into one soon. Its been running fine. We use it a few days a week. It is my dads favorite mower. When I pulled the plugs and cranked it over it turned over very fast. With the plugs in it turns over much slower (like a normal engine).

When I went to start it this morning it made a slight pop out of the muffler then nothing after that. If it sheared the flywheel key wouldn't it not have any spark? Thats not the first time it has done that small pop upon trying to start it. It tends to do that if it has been flooded a little with fuel.
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2008 Gravely 160Z
2004 Gravely 34Z
1998 Lazer Z HP 48 (old faithful)
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Old 10-03-2012, 11:54 AM
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ProStreetCamaro ProStreetCamaro is offline
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Ok very strange behavior out of this thing. Just went back out after letting it sit a bit and pulled the choke and put throttle at full and cranked it over and it fired right up. Sounded as good as always. Turned the throttle down and it actually idled! It has not idled in years. Turned it off and went to start it again and POP out the exhaust. Will not restart again.

This makes me think the fuel shut off solenoid is bad?
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2013 Gravely 460Z 29EFI
2011 Gravely 36GR
2008 Gravely 160Z
2004 Gravely 34Z
1998 Lazer Z HP 48 (old faithful)
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  #5  
Old 10-03-2012, 11:55 AM
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piston slapper piston slapper is offline
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A sheared key will affect the timing of the spark...not the spark itself..
If starting fluid doesn't make it try to start...and the sparkplugs are dry and firing..its either timing or compression issues...
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Old 10-03-2012, 12:30 PM
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piston slapper piston slapper is offline
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Perhaps a sticking fuel solenoid..easy enough to check..turn the key on an listen for the click..
Could be a wet safety switch...if you unplug the white wire in the engine connector you will disable all the safeties that kill the ignition
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