Briggs and Stratton 5 HP Wont Start

[skinnyt73]

sounds like the diaphragm is bad to me...

 

[skinnyt73]

the carb diaphragm is bad

 

[ProTechCharlie]

the carb diaphragm is bad

I am sorry to tell you, and maybe I was not clear enough in my prior posts, but, this is happening with the carb and fuel tank off. Fire will come right out of the intake hole. As Fish suggested, it could be my ignition coil, but how would this cause the intake to have fire come out of it, twice? Thank you for your suggestion though, and I do apologize for not being clear enough in my previous posts.

For all those still interested in my little fiasco, I am uploading a video to YouTube. Here, I took a video of the spark that the ignition coil is providing, whether it is enough or not, that will be for you guys to decide. Once it is uploaded, I will paste the link here. Thank you guys for all your help, and I hope that we can figure this out soon, and together. :biggrin::smile:

The video is herehttps://www.youtube.com/watch?v=XWewGICDQ3s&list=UUwqNMVMMsbcApQC8puuuzEg) You should watch it in 720p to make it easier to identify the spark. Thank you to all who have chimed in!

-Thanks, Charlie.

 

[Fish]

Do it again, but this time leave the side of the plug/metal against the bolt head, not up close to the electrode. Also, turn the lights off, that should lay it out plain. If you have to pull 5 times to get a little spark, then your ignition system is not up to snuff.....

 

[ProTechCharlie]

Do it again, but this time leave the side of the plug/metal against the bolt head, not up close to the electrode. Also, turn the lights off, that should lay it out plain. If you have to pull 5 times to get a little spark, then your ignition system is not up to snuff.....

Well, you could see a little spark couldnt you? I will go out later tonight and give it a few pulls. Do you think what you seen was enough for combustion?

-Thanks, Charlie.

 

[Fish]

If you only see an intermittent spark every few pulls, then you need to fix your ignition. Your mower's history, who knows else what may be haywire?

 

[ProTechCharlie]

If you only see an intermittent spark every few pulls, then you need to fix your ignition. Your mower's history, who knows else what may be haywire?

I got another video recorded. I will upload it in a few minutes. At night, it seems every pull made it jump the gap. Here is the link. I can confirm that every pull, it made spark, even when the camera was not on it. Here: (https://www.youtube.com/watch?v=v1q_SPcAiJc&list=UUwqNMVMMsbcApQC8puuuzEg)

What do you think?

 

[Mikel1]

I may have missed it but what is the compression at?

 

[ProTechCharlie]

I may have missed it but what is the compression at?

I have not tested it. But, I have many reasons to believe that it has good compression.

1) It is difficult to move without the pull start attached (by hand).
2) I can hear it.
3) Put my finger in the plug hole and it blew past.
4) Installed new rings.
5) Installed new crank case gasket.
6) When I take the head off after trying to start it, I CAN SEE GAS ON THE VALVES AND INSIDE THE HEAD!!!!!!!!!!
7) Valves open and shut according to piston position and there is no overlap between the intake and exhaust opening and closing.

The sixth point leads me to believe Fish. Because, gas from the tank would not be in the dry head, if it did not have enough compression to suck them in. (I know it was dry because I installed the tank when the head was 100% dry). I have poured gas, ESF, and carb cleaner right in the head, and NOTHING!!! I think the spark is so weak that it is unable to ignite the combustible fluids. But it gives me a good little jolt when I pull the starter, which leads me to believe that it is providing enough current.

 

[Mikel1]

If spark is weak then that could possibly be your problem. I have my doubts from looking at your video, though.
Actually compression can be low and still have enough to pull in fuel. I have the 130202 on a tiller and at 30psi compression it sent a flame(backfire) out of the carb.