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Spree fouling plugs
Posted: Thu Feb 09, 2017 8:14 pm
by Ruckenstein
My 86 spree has 122 compression and starts up fine. Idles for a good time
Then it dies. Also dies when throttle is given quickly.
I've replaced crank seals. Have checked for vacuum leaks. (None found)
Petcock tested fine. Non OEM bystarter. Verified oiler works. Did seem to run better on premix.
I was fairly certain the ol' autoluber seal failed and the crankcase
had filled with oil. I dropped the engine
flipped it upside down took out the spark plug and started cranking to try and clear the case.
I expected some oil to come out. But nothing. Any help is appreciated.
I have not tested the actual crankcase for air leak. Any help is always appreciated.
Every time it dies the plug is laden in oil. Carb air mixture is 1 7/8 out. Have also tried 1 1/2 out as well.
Re: Spree fouling plugs
Posted: Fri Feb 10, 2017 1:46 pm
by benji
Seems rich as heck. Maybe a weak spark for some reason, but I'm guessing the bystarter is leaking or staying open
Re: Spree fouling plugs
Posted: Fri Feb 10, 2017 4:56 pm
by Ruckenstein
You think trying a couple different Cdi-a might work?
Re: Spree fouling plugs
Posted: Fri Feb 10, 2017 6:20 pm
by motormike
Go back to pre-mix and run it.
Sounds like it's over-oiling to me.
Re: Spree fouling plugs
Posted: Fri Feb 10, 2017 8:39 pm
by kevinv710
needle jet up one
Re: Spree fouling plugs
Posted: Sat Feb 11, 2017 12:14 am
by motormike
kevinv710 wrote:needle jet up one
...if kevin710 says "up one",...then go up one.
You can rely on his advice 100%... 
Re: Spree fouling plugs
Posted: Sat Feb 11, 2017 6:29 pm
by jerz40
motormike wrote:kevinv710 wrote:needle jet up one
...if kevin710 says "up one",...then go up one.
You can rely on his advice 100%...
^^Agree!^^ Had a similar problem last year, kevin710 nailed it!
Re: Spree fouling plugs
Posted: Mon Feb 13, 2017 7:19 pm
by Ruckenstein
Is the only way to drain is with the intake off? Any tricks to keep from destroying this 30 year old piece of intake plastic?
Re: Spree fouling plugs
Posted: Wed Feb 15, 2017 4:14 pm
by Ruckenstein
Pulled the intake and reed cage off successfully. Tipped over and nothing came out over night. Time to pull the head?
Re: Spree fouling plugs
Posted: Wed Feb 15, 2017 4:25 pm
by Ruckenstein
benji wrote:Seems rich as heck. Maybe a weak spark for some reason, but I'm guessing the bystarter is leaking or staying open
So do the CDIs have the ability to produce weak spark? I was thinking they were all or nothing.
Re: Spree fouling plugs
Posted: Thu Feb 16, 2017 11:48 am
by benji
I'm not sure... Maybe when they go bad they can produce a weak or intermittent spark signal but that's just a guess on my part I've never had a bad cdi.
Re: Spree fouling plugs
Posted: Thu Feb 16, 2017 11:49 am
by benji
I'm backing kevin710's response too... seems rich to me.
Re: Spree fouling plugs
Posted: Fri Mar 03, 2017 9:15 am
by Ruckenstein
So I drained the case...it did have some oil in it. Nothing crazy. My ground wire was shredded but still allowing for spark. Could a bad ground make it cut out when Rpms increase?
Re: Spree fouling plugs
Posted: Fri Mar 03, 2017 12:27 pm
by MrJumps
fix that ground very well could be cuase post up a pic of the old fouled plug
Re: Spree fouling plugs
Posted: Fri Mar 03, 2017 2:04 pm
by motormike
Clearly, that ground wire was SCORCHED previously...and that NEVER yields good results.
I suspect whatever caused the wire to be so hot has affected the integrity of any associated components.
I would try a different rectifier just to see if anything changes....or CDI maybe too.