blower motor....

[babewk]

Craftsman blower....new carb, gaskets.

Will not start.....checked cylinder pressure....105.....held.
Plug is sparking.

put a new carb on it.....getting fuel....any ideas on some troubleshooting I can do?

if the piston or piston ring was bad, would I still get the 105 psi?

 

[bertsmobile1]

:welcome:

Firstly compression tester numbers mean very little on small engines.

I can fill the page wit text or tell you to go to ereplacement parts web page and look at their how to diagnose a small engine video.
Get back to us with the results & we can guide you through the process.

 

[babewk]

viewed the video....

Tried starting per blower instructions...nothing

Did a squirt of carb cleaner in the carb....nothing

Removed the plug and tested by using motor body....nice blue / white spark (even bought a new plug)....

performed a compression test by removing the spark plug and pulling rope 3-5 times....held pressure at 105.

even followed some other troubleshooting by pouring a small amount of fuel directly in the cylinder (thimble full)...nothing.
If the piston, or piston ring were bad, would I still hold pressure?
Seems like there is not much left.....
Welcome to any advice....

 

[bertsmobile1]

If you did not get any response from gas directly down the plug hole, and I like to use a short shot of starter fluid myself.
You are looking at a module failure or a timing failure.
Spend a few dollars more and get an inline spark tester. check for a spark, with the plug in the engine.
The 3 prong ones are best but a simple flashing tube one will suffice.
A coil can throw a big fat spark in air and nothing inside the engine.
I just finished a Chineese fake 070 the module would happily throw a 3/4" spark outside the engine , but nothing whatsoever inside.

Other than that, the timing is controlled by a key cast into the flywheel which can break off and allow the timing to be out of sync with the piston.