Eska won’t start.

[nickmwelds]

Howdy ladies and gentlemen.
I have an early 70s eska 7.5hp. I have got a crazy mind boggling issues with.
The engine has great compression, has strong spark, and I squirt 2 stroke mix down its throat and I get nothing. Not even a cough. I’ve removed the keyway on the flywheel and tried the timing advanced, retarded, all over the place. I have replaced a lot of the gaskets to check for air leaks and still get nothin. I know Eska/ tecumseh are finicky little motors. Just can’t wrap my mind around this thing not even making a sputter. If anyone has ideas send me a shout.
Nick
Central TX

 

[airshot]

When you say strong spark, what kind of gap will it jump ? When you say good compression, what are the numbers ? Is it firing when the piston reaches tdc ? Put the proper key back in the flywheel, trying to move it won't help at all. Actual testing numbers are needed, not it feels or looks good.

 

[nickmwelds]

The spark will jump a 1/2” gap. And it’s making just over 110lbs of compression. I have tried it with the key in the factory location many times.

 

[airshot]

If your numbers are accurate, it shoukd run or at least fire when fuel is put in the cylinder unless the spark plug is bad/ fouled...

 

[nickmwelds]

I have two brand new spark plugs and got nothing.
I’ve never posted a question to any sites I’ve never had an issue like this, with anything before.
Ive restored everything from chainsaws to diesel tractors, transmission, and hydraulic systems. This is a mind F***

 

[brim_buster]

Pull the reed assy. and look at it

 

[airshot]

Has someone swapped parts on it before you got it ?? Just wondering if something was changed out from another model ?

 

[nickmwelds]

I have checked the reed assembly and it seems to be in fine condition.
The original owner had replaced the ignition with a later model electronic version. I have since returned it back to points ignition.
When I originally got the engine I assumed the flywheel for points wasn’t compatible. Maybe magnets were in a different location. But I have compared an electronic ignition flywheel and the points style and they are exactly the same.

 

[airshot]

Is the key in the flywheels in the same position in relation to the magnets ?? Your explanation of the change over makes me suspect that there is your problem...

 

[nickmwelds]

The original owner had tried to convert the engine to an electronic ignition. And could never get the motor to run. My initial thought was the flywheels are different. So I bought a flywheel off of fleabay that was listed as electronic ignition. The key on both flywheels is in the exact same position in relation to the magnets.
There’s always a possibility the seller from eBay was incorrect.
But I also have a functioning points ignition I have put on the motor and haven’t gotten it to fire or sputter at all.

 

[airshot]

The original owner had tried to convert the engine to an electronic ignition. And could never get the motor to run. My initial thought was the flywheels are different. So I bought a flywheel off of fleabay that was listed as electronic ignition. The key on both flywheels is in the exact same position in relation to the magnets.
There’s always a possibility the seller from eBay was incorrect.
But I also have a functioning points ignition I have put on the motor and haven’t gotten it to fire or sputter at all.

Time to make a sacrifice to the great motor Gods in the sky !!!!! Best I got....

 

[matt167]

That is a Techumseh 2 stroke that was originally manufactured by Power Products, a smaller company that Tech acquired.. at one time Tech was using their SSI ignitions on them, which is a special unit because it uses both a trigger and a charge coil, unlike a Briggs and Stratton that put a transistor on a coil for a rudimentary timing trigger… anyway point is the flywheel on the SSI usually has 2 magnets and it’s actually for low speed and high speed timing. not 100% sure on the 2 strokes. But it would probably spark and be out of time with the wrong flywheel

 

[Chris1956]

It will be awkward, but, remove the spark plug, put a timing light on the plug wire and give it a pull and see where she sparks. You could also use a drill to turn the motor over.