Is this valve bent?

[tom3]

I'd try to relap the valves before doing anything serious. Having the valve sticking open a bit might have messed up the seat to valve contact. Get some lapping compound, probably videos on Youtube on this.

 

[Richie F]

Valve head seat face must always be square to the valve seat in the head.
Don't care what the angle of the valve is in relation to combustion head.
Could the valve seat come loose in the head and it "looks like" the valve is bent ?
You're pictures to me show nothing of the problem.

 

[bluefitness]

I was able to get it to kick off or fire once or twice. I wouldn't say that it actually started, however.

Is there a way to put the spring back on without a special tool, if I remove the intake valve?

 

[Scrubcadet10]

There is, with me it usually involves a flat head screwdriver, plenty of patience, and some bloody and gouged knuckles. or finger tips
since then i've gotten a Stens 750-174, or similar, you just install the spring with the keeper in the grooves and adjust the holding grooves wider or narrower to hold it tight, but not too tight., and then compress it, then i stick it on the valve with the keeper hole towards me, so that way i just pull the tool straight back and voila!

 

[bluefitness]

I noticed the exhaust valve bumps open a little bit on the compression stroke. Is this a compression release mechanism to make it easier to pull start?

 

[Scrubcadet10]

What particular tecumseh are you working on, model # ?

 

[bertsmobile1]

I noticed the exhaust valve bumps open a little bit on the compression stroke. Is this a compression release mechanism to make it easier to pull start?

yes

 

[bluefitness]

What particular tecumseh are you working on, model # ?

I'm not sure of the model number for the engine. The Toro model is 20070.

 

[Born2Mow]

Hold your thumb over the empty plug hole. With the throttle wide open (to let air in), turning the engine full-speed by pull rope or motor should blow your thumb off the port.

 

[bluefitness]

Are you supposed to put grease or oil on the intake and exhaust stems, springs, etc.? I noticed the intake stem was difficult to put back in. The exhaust valve was easy. I'm assuming it was because of the intake valve seal.