Tecumseh 10horse has spark will not start

Dale Gash · Mar 22, 2014

I have a generator with a 10 horse engine, has spark. The engine with air cleaner removed and starter fluid shot into the air inlet, will not start. Engine is 6 yr old. Last several years has been progressively harder to start. Is now DID.

IH2444 · Mar 22, 2014

(quoted from post at 08:05:02 03/22/14) I have a generator with a 10 horse engine, has spark. The engine with air cleaner removed and starter fluid shot into the air inlet, will not start. Engine is 6 yr old. Last several years has been progressively harder to start. Is now DID.

Overhead valve engine?
If so valve trouble most likely.

Steve A W · Mar 22, 2014

How good is the compression?
Also check the flywheel key.

Steve A W

greygoat · Mar 22, 2014

Check for a valve stuck open, or partially open.
Check for flywheel key partially sheared, that
could throw timing off enough so it won't start.

El Toro · Mar 22, 2014

If you have good compression I would replace the old sparkplug. Hal

LenND · Mar 22, 2014

Last year my 8 horse Tecumseh did that. Finally
took off head and valve was stuck open. Tapped
it lightly with hammer and it dropped in place.

Dale Gash · Mar 22, 2014

OHV engine. Guess I need to pull the head and if it's a stuck
valve then I don't need to pull the flywheel to check for a
sheared key. Thanks

Dale Gash · Mar 22, 2014

I will check for a stuck valve. Thanks.

Dale Gash · Mar 22, 2014

Compression good . Will check for a stuck valve first and then for a sheared key. Thanks

El Toro · Mar 22, 2014

Install a new sparkplug. Hal

504 · Mar 22, 2014

If it has compression, then the valves are fine. You can take the valve cover off and see if the valves are moving too.
Pull the plug and spray starting fluid in the hole, put the plug back in(finger tight is fine) try to start it. If it fires then the plug is alright. I am betting on either a bad spark plug or you are just not getting gas to the plug.

ken house · Mar 22, 2014

with air filter element removed, is there a suction through carb?

a few years ago, i had dirt dauber build nest in muffler of weed eater, cost me $35 for someone to remove dirt from muffler. lol

Steve@Advance · Mar 22, 2014

Just pull the valve cover, turn it through and watch the valves. May be a pushrod or rocker problem, valve not opening.

Randy Shoe · Mar 23, 2014

I have seen several times in years past that I had spark to the plug when it was pulled out but no spark when under compression, put new plug in and was off and running. Just a thought.

El Toro · Mar 23, 2014

If you have compression you won't have a stuck valve. Hal

ken house · Mar 23, 2014

i have heard that a plug that will not fire under compression, will fire when it is laying outside the cylinder. i cannot understand that, but, i have to yield to the people that study this. it does not make sense to me. cannot see what difference, it will make.

quite a lot of times, when we have trouble with small engine, the spark plug is the problem.

a friend went to look at a small motorcycle, that was for sale, that was not running good; he took a new spark plug and a wrench with him. he rode it out of sight of the owner, changed the plug, it ran good, put the old plug back in and returned and bought the cycle. lol

Sprint 6 · Mar 23, 2014

The compressed air in the cylinder creates electrical resistance, requiring a good plug. I have had this happen on two of my 16 horse cast iron Briggs, they are hard on plugs for some reason.

IrvIA · Mar 25, 2014

Amen!!!.....me too. I've even had problems NGK. I'm beginning to think it's the crappy fuel that won't fire and gets them wet.

Tecumseh 10horse has spark will not start

Dale Gash

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IH2444

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Dale Gash

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