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I have a 2007 Airens 8526 and it was not firing. A new spark plug solved that problem used it once and parked it. Tried starting it again and it would not turn over. Purchased a few new spark plugs and that didn't solve the problem. Purchased a new coil for it, thinking it wasn't getting spark, and installed it. I could not turn over the engine after this (used it once before, worked fine). I took off the pull cord cover and manually turned over the engine. It turned over, but won't start and is making a weird noise. I looked at the piston and valves and they are all moving freely. Oil level is good. I put finger over spark plug hole and it has compression.
Attached is a video link of the sound.

https://vimeo.com/user107856978/review/387085049/40050a1e88
 

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:welcome: to SBF dfrisk

When I try the link all I get is:

Sorry, we couldn’t find that page
Make sure you’ve typed the URL correctly, or try searching Vimeo. You could also watch one of the videos below instead.


Soulds like you might have a problem with the recoil if you can't turn the engine over with it but can without it.
I know it has 8526 on the dashboard but can you post the model and serial numbers for it. Engine numbers for the Tecumseh might be helpful too.
Do you have electric start ?
Have you checked to see if you presently do have spark when the engine is turned over ?


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Guessing 926013? Did it get slush or sleet on it and then stored outdoors or in non insulated spot? Sometimes the rope can freeze up inside the recoil.


Got the video now, look around the head for soot marks, sounds like a farting head gasket or stuck valve.
 

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Sounds like a compression leak: valve stuck partly open (carbon on seat, e.g.), bad valve clearances, burned valve, blown head gasket etc.

Can you isolate that "ch ch" sound to the muffler, the carb or to "generally" the top of the engine?
 

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Have you tried to give it a shot of starting fluid to see if it will pop and run a second or two ?

I planed the video a couple times and the metallic sound to my ears sounds like something in the recoil hitting. There does seem to be another sound but I can't quite put a name to it.
Have you noticed any leaking of oil down the engine from the head gasket area ?

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Welcome to the SBF from Gettysburg.
 

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Discussion Starter #10
It sounds like it’s coming from the flywheel area, so I don’t know if something is rubbing there. Isn’t leaking oil.
 

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any chance a mouse made a nest under the covers?as they seem to love the flywheel area on old techs .
sound wise is it getting gas to the carb? water in the bowl? clogged main jet? you state is has spark leaving those 3 items .
 

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Discussion Starter #12
Figured it out. The new coil was rubbing against the flywheel. I grinded the part that was rubbing and put everything back together. Started right up.
 
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