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I am thinking you are right. I am going to buy another carb. This one just doesn't seem right. 1/2 the time when I buy something new it is bad, so I am going to buy another carb. Already got rid of the original, stupidly.

Just replaced it when I replaced the breather reed and tube.

And it would cost more than a new engine would cost. No thank you. Thanks, but in all honesty on some level I've been enjoying learning about my new used mower. I've taken cars down to the frame and back, rebuilt 4 bangers to V8's to putting an Evaporator in my 2013 Chevy Volt(toughest job I...

Fixed everything and still made no difference. Start doing same thing while mowing today. Will go 3400 RPM sitting in neutral with blades not spinning. Maximum 2500 or so moving with blades engaged. Any more and POW, POW, POW, POW with black puffs of smoke out exhaust. One odd thing was...

Most it would allow me to upload. Sorry.

That is just crazy.

Problem solved! Reed for crankcase breather couldn't open. Was off center and edge of cover was pinning it down. Unreal. Jeezaweez.

Can only get about 2400 RPM. After that it starts popping loudly through exhaust.

After all my work, it still does it. Ugh! New carb, air filter, plug, amature with plug wire, head gasket, valves reseated, decarbed entire head, new gas tank, fuel lines, fuel filter, and oil changed. Still it pops loudly when going up hill with blades engaged. Also, pops non stop when...

Do both intake and exhaust side have seals? Like you see in my pic before, only intake side has seal and kit only came with one.

Mine look completely different from exhaust to intake. Here, take a look.

New fuel tank, lines, filter, carb, and carb drained. Still did it. Yes I understand about the choke. Thank you for the help. I think after decarbing and reseating the valves it will be good as new. Lot of crap around intake valve and some carb on top end just around the exhaust valves...

Pretty nasty black in here though.

Found my problem. Exhaust valve not completely seated. Slow leaks down when chamber filled with Chem-Dip. Will get a valve lapping tool today. Get valves all cleaned up. Inspect for any damage to seat which I dont see any right now. Reseat the valves and recheck. So far nothing appears...

Will do thank you. And I truly appreciate your help. Need to get this going badly without torpedoing the engine.

Will do again when I am off work Wednesday, but as I recall when I adjusted the valves I rotated to get to top dead center and they both moved good. I will measure their travel this time and recheck the adjustments. I might have left clearance on exhaust valve a little too tight based off some...

Yes with new carb.

Tried it and it still does it. Noticed small crack in upper gas tank though during the process and ordered a new one. But did what you said and it still pops like in the video at higher rpm and going up hill with blades engaged.

I cant run at full throttle.

The only thing I wonder is why does it do it every time I throttle all the way up also? But doesnt stop until I throttle back down?

Will do tomorrow, Thanks.

What nut? Take the fuel shut off valve out?

yes and yes. Does that sound like not getting enough fuel?

Carb is new. New gas and fuel lines too.

https://share.icloud.com/photos/0OEB3DqPpWSJXwBdRZxu32H8g

Have Craftsman LT1000 with 18 hp OHV engine. Just installed new carb and adjusted, replaced the armature, wire, and plug, new fuel lines, filter, and fuel, and adjusted the valves. Still it pops at times of high RPM, turning sharply, heavy load, going up steap slope with blades engaged, or when...