Extremely loud exhaust

Bwn_us

Forum Newbie
Joined
May 7, 2023
Threads
1
Messages
6
I have a briggs powerbuilt 12.5hp. And it has got extremely loud (exhaust). I replaced and still the same. Covered muffler with rag to be sure it was from muffler. Could it be a burnt valve or what am I missing?
 
Last edited:

Bertrrr

Well-Known Member
Joined
Mar 11, 2021
Threads
4
Messages
391
I've never seen a burnt valve cause loud exhaust, if you have a burnt valve I don't think it would even run, you may try a different muffler - larger to quiet it down a bit, was it always loud? you may have an exhaust leak sort of bypassing the muffler
 

Bwn_us

Forum Newbie
Joined
May 7, 2023
Threads
1
Messages
6
It also chokes down when you spray starting fluid in carb. Found out spraying for leaks.
 

Forest#2

Well-Known Member
Joined
Apr 17, 2022
Threads
0
Messages
340
Post up model code type and even a picture of the engine.

Did you install a NEW correct muffler?
 

bertsmobile1

Lawn Royalty
Joined
Nov 29, 2014
Threads
64
Messages
24,647
Briggs make a deflector that bolts over the outside of the muffler
Get one an bolt it on so the outlet is down
 

Bwn_us

Forum Newbie
Joined
May 7, 2023
Threads
1
Messages
6
Briggs make a deflector that bolts over the outside of the muffler
Get one an bolt it on so the outlet is down
I'll try that. But still don't understand why oem new muffler and still loud and chokes down with ether
 

Forest#2

Well-Known Member
Joined
Apr 17, 2022
Threads
0
Messages
340
You say:
But still don't understand why oem new muffler and still loud and chokes down with ether

Huh?????????what??????????
Say again?????????????????

Are you indicating you are priming with ether?

If so why????????????
 
Last edited:

bertsmobile1

Lawn Royalty
Joined
Nov 29, 2014
Threads
64
Messages
24,647
Sorry.
I am not sure of what you are saying
The muffler is cheap and Briggs are very noisy engines which is one reason why a lot of mower companies fit their own muffler .
Either is a fuel adding more fuel will make the engine run rich & blow black smoke because there is more fuel than the engine can burn.
 

Scrubcadet10

Moderator
Staff member
Joined
Sep 24, 2017
Threads
248
Messages
6,432
I'll try that. But still don't understand why oem new muffler and still loud and chokes down with ether
You're adding more fuel by spraying it with ether.... too much fuel at the wrong volume. Its different than opening the throttle.
 
Top