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Genius idea! Works every time. Used magnet to get the broken pieces out the engine and continue moving. Thanks

What about leaving broken pieces inside engine?

Wonderful I was about to tear what was left of my hair out trying to get this thing to start consistently

That trick worked great on my Intek 19 HP. It was easy to get to the air cleaner. Used a plastic oil jug lid. I had to get the timing right. I turned the engine backward until I came up against the compression stroke. I can deal with that. Didnt like putting a battery charger on and putting it on boost. I have s 21.5 twin Intek that seems to have the same problem. It barely goes thru the compression stroke but starts.

I have been starting mine like this for a long time. Briggs should do away with this design and provide a lever to block off the air intake similar to choke lever.

Fair enough. But you’ve still got bits of metal rattling round inside your engine

Hey man you are a lifesaver I was about to get rid of my mower I covered the hole with a glove fired right up thanks!

Thank you!!!

Worked for a second and then shut back off. Any ideas?

it worked but there is an easier way, 1- Try and start until it stops, 2- turn the fan on top clockwise slowly until you just get past the compression stroke. (when it gets easier to turn then stop) 3- turn the key and it should build enough speed to keep going. It worked on mine. I wish b&s stopped this bs and put on a manual decomp lever too like the single cylinder diesel engines have. Edit: a warning to others, if you do run the engine with a broken decompression thing then those broken parts are loose inside your engine and can cause damage, the bits broke the governor in mine which almost caused a runaway. Just fix it it's not hard

Thank you. The compression release on my engine works when it feels like it. This is a quick fix, and I really appreciate it. The engine has 110 hours on it. Oil changed regularly. Briggs and Stratton timed obsolescence, I'm guessing.

Looks like a good way for someone who doesn't know any better to get hurt.

Absolutely brilliant!

Don't forget that when the decompression mechanism fails it throws a load of metal shrapnel into the engine. My 19HP is doing the same thing after maybe 100-150 hours. Briggs & Stratton needs a good class action lawsuit on their hands for this bone-headed design blunder.

Got a old cub cadet zt and I've been replacing parts left and right since I got it a yr ago. Bought to buy another starter motor thinking it was just faulty. Would have been my 3rd one this season. This worked perfectly. No money spent.

This can work well, but two points: 1) Make sure that whatever you use to cover the intake is not small enough to get sucked in. 2) DON'T use your bare hand - the engine can backfire when doing this, especially if it is already warm.

Thank you!!!!!!!

Can removing the spark plug relieve some pressure ???

I discovered an even easier way. Just manually rotate the engine to just past top dead center and start normally. When you start from that point the engine has enough inertia to keep spinning.

Amazing video! I don’t have this issue right now, but I do have an engine almost identical. I say almost because it has pressure lubrication with an oil filter. However, if I ever do, I will use this method to start it. Once the engine is going, there’s absolutely nothing wrong with it.

That is well and good but if the compression release valve is broken off the parts that are broken and in the sump can cause other damage to the engine.

I suggest if you decide to keep using the engine to change the oil and use a magnet to attempt to retrieve any metal pieces out the drain hole.

That's fine but if you never fixed the broken compression release on the cam, that piece is still floating around in the engine and possibly causing more damage. You still need to fix the problem.

Why did you splice/edit a piece right after you turned the key. And then it starts. This did not work for me. Somethings not right.

Compression Release

Did you try adjusting your valves. Valve gap is normally why the compression relief does not work on a Briggs

Thank you very much. Can’t wait to try

Wow, for real. Jesus Fn Christ. I wish they had just given us a pull lever to operate the compression release instead of this automatic stuff that fails. I can't get to my air intake easily, so what I do, is connect a battery charger to the battery and set it at the 20amp crank mode, and that will get me past the first compression stroke... for a couple of strokes anyway. If it don't crank, turn down the charger to 5 amps, let it sit a little, then back up to 20amp crank and try again.

This works great! I'll do the repair once (replace cam shaft - compression relief mechanism, attached to cam breaks off). But it will likely break again 😢.

The only question I would have about this fix is if the compression relief trigger is broken it's still inside the engine just rummaging around in there. If it happens to land in the wrong spot you then can have what's commonly referred to as "Catastrophic Failure"

I can confirm this worked for me after several attempts. I put a battery charger on the battery while doing this and squirt a little starter fluid in the air filter tube and then put a wash rag over the tube and it started. Thanks for the quick work around till I can get the camshaft replaced. Date: 3/21/2024

Thank you, thank you, thank you. This trick just saved me!

You are a genius, never for a sec did i think the if no air goes in , then no compression will take place .thank you so much. My problem started every so often until it just won't have enough power to crank over. So i maybe 🤞🤞 my cam acr is not broken. I think maybe needs a valve adjustment. Just waiting on the valve feeler to check clearance. But for now i will use it like this 😀

5 years later and still helping. Mowed about 3/4 acre with a push mower..twice...saw this video next day I was 'tinkering" in the garage and thought "what the hell". Worked like a champ !! Thanks from the future, 3/2024. 😎👍

adjusted the valves tip from another video and it didn't work. Looked for the bump test for cam shaft and passed. I watched this video earlier, went out tried it and it didn't start, came back to youtube and watch a different valve adjusting video with 1 open and 1 closed valve and adjust to .004 on both, opening 1 at a time. then closed her up and did Deep Adventures method off cutting off the air and it started right up TY!!!!! I been at this for 3 weeks, oil change, new spark plug, no metal in oil, new starter and I was losing my mind my it wouldn't turn on. Now it re-starts when I turned it off twice like nothing has ever happened.

Thank you!!!!

nice ! same issue - mechanic suggest to destroy the engine

thank you! started immediately after watching this!!!

And Briggs and Stratton is known for this.

Big brain, like a boss!

You can also try to spin top of motor by hand till it gets hard to turn and as soon as it gets easier to turn stop....try to start it and the added early momentum for starter let's it spin and start.

B&S probably uses this same piece of cam junk in their fuel injection engines, and they want you to think their engines are good piece equipment. Will never buy a B&S ever again. They are building terrible engines and they know it by not acknowledging their mistakes.

Didn't work for me.

Yes, it will run, until the pieces of the broken decompression valve lock the engine up.

That's the easiest workaround I've seen yet. I can't wait for the rain to stop and try it.

What a simple great solution- Thank you for sharing..

Thanks for the good tip.

Could be a broken compression release, but not for everyone in the comments and everyone who viewed this. It is most often that a valve adjustment is needed, as it can appear to be the same problem. I readjusted my valves and it cured the problem.

Don't the choke do the same thing ?

Awesome thank you