My Lawnmower Forum banner
1 - 6 of 6 Posts

·
Registered
Joined
·
35 Posts
Discussion Starter · #1 ·
I have a Honda gcv160a and I cleaned the carburetor and replaced all the gaskets from the carb to the engine and new plug and the engine still surges when mowing.
 

·
Registered
Joined
·
459 Posts
I have a Honda gcv160a and I cleaned the carburetor and replaced all the gaskets from the carb to the engine and new plug and the engine still surges when mowing.
-Drained all the fuel, cleaned fuel lines, added fresh fuel?

-Does it have a manual choke? If so, does the engine run smooth/steady when the choke is ON? If so, for sure sounds like gunk still in the carburetor.

-Was it surging before the repairs, and no change at all now?

-Is this an all-Honda mower, or a Honda engine on another brand?

Double-check all carb parts, rods, springs, etc. and ensure they are installed in the correct order, and the two long bolts are secure. A vacuum leak can cause surging issues.

When cleaning the carb, it can be hard to really do a proper job, especially without carb cleaner and compressed air. There's an excellent guide here with full instructions & detailed photos:

How to Clean a Honda Carburetor

Finally, it can often be faster/easier to just replace the carburetor. For many Honda GCV160 engines, a whole new carburetor is $14~$25 list price. To match a carburetor, need a number from you:

-If a 100% Honda mower, need the serial number off the back of the mower deck. It is in the form of MXXX-1234567.
-If only a Honda engine on a non-Honda mower, need the serial number off the side of the engine block. It is in a dot-matirx print pattern, hard to see, so get a flashlight. Look for a number in the form of GXXXX-1234567/
 

·
Registered
Joined
·
35 Posts
Discussion Starter · #3 ·
It does not run better on choke and I am a mechanic so I have air and carb cleaner and a sonic cleaner which I used to clean the carb. All the bolts and linkage are on correctly. When I hold the governor steady it runs fine.
-Drained all the fuel, cleaned fuel lines, added fresh fuel?

-Does it have a manual choke? If so, does the engine run smooth/steady when the choke is ON? If so, for sure sounds like gunk still in the carburetor.

-Was it surging before the repairs, and no change at all now?

-Is this an all-Honda mower, or a Honda engine on another brand?

Double-check all carb parts, rods, springs, etc. and ensure they are installed in the correct order, and the two long bolts are secure. A vacuum leak can cause surging issues.

When cleaning the carb, it can be hard to really do a proper job, especially without carb cleaner and compressed air. There's an excellent guide here with full instructions & detailed photos:

How to Clean a Honda Carburetor

Finally, it can often be faster/easier to just replace the carburetor. For many Honda GCV160 engines, a whole new carburetor is $14~$25 list price. To match a carburetor, need a number from you:

-If a 100% Honda mower, need the serial number off the back of the mower deck. It is in the form of MXXX-1234567.
-If only a Honda engine on a non-Honda mower, need the serial number off the side of the engine block. It is in a dot-matirx print pattern, hard to see, so get a flashlight. Look for a number in the form of GXXXX-1234567/
 
1 - 6 of 6 Posts
Top