After replacing the cylinder head, 20 hp Briggs and Stratton won't start.

R

Rcross1959

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• Jul 2, 2017 / After replacing the cylinder head, 20 hp Briggs and Stratton won't start.

• #1

After I replaced cylinder head gasket, I did check both push rods are metal, I did lash .006 feeler gap.
I did jump the battery, my briggs and Stratton 20 hp engine still won't start. .???
I did check oil and carburetor is cleaned.
I can not think how to find what wrong!
Please help me.

 

BlazNT

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• Jul 2, 2017 / After replacing the cylinder head, 20 hp Briggs and Stratton won't start.

• #2

Model number off the engine. Your gap is not correct but I can not get you the correct gap without the model number.

 

B

bertsmobile1

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• Jul 2, 2017 / After replacing the cylinder head, 20 hp Briggs and Stratton won't start.

• #3

Rcross1959 said:

After I replaced cylinder head gasket, I did check both push rods are metal, I did lash .006 feeler gap.
I did jump the battery, my briggs and Stratton 20 hp engine still won't start. .???
I did check oil and carburetor is cleaned.
I can not think how to find what wrong!
Please help me.

Click to expand...

:welcome:

Sit down, take a deep breath and rethink your post.
You are there, we are here
You can see, hear & smell what is happening
We have to imagine it from what you have posted
So start by describing exactly what happens from the time your bum hit the seat.

 

R

Rcross1959

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• Jul 2, 2017 / After replacing the cylinder head, 20 hp Briggs and Stratton won't start.

• #4

BlazNT said:

Model number off the engine. Your gap is not correct but I can not get you the correct gap without the model number.

Click to expand...

Model nbr is 331777
20 hp Briggs and Stratton engine
What number of gap?
Push rods made of metal.

Richard

 

pugaltitude

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• Jul 2, 2017 / After replacing the cylinder head, 20 hp Briggs and Stratton won't start.

• #5

Your valve lash should be 0.003" - 0.005" inlet and 0.005" - 0.007" exhaust.
You could be too far out on inlet which is causing an issue.
The alu push rod is used on the inlet (bottom) valve and usually steel on the exhaust.