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I have to choke engine to prevent surging. It is two yuears…

Customer Question
I have to choke...

I have to choke engine to prevent surging

Mechanic's Assistant: Can you guesstimate how old the engine is? And has it done anything like this in the past?

It is two yuears old on a toro mower it just started

Mechanic's Assistant: Do you plan on doing the work yourself?

Yes the shops are backed up 4 to 5 weeks

Mechanic's Assistant: Anything else we should know to help you best?

I changed fuel fitler and pump

Submitted: 2 months ago.Category: Small Engine
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Answered in 25 minutes by:
6/1/2018
Technician: Curtis B., Technician replied 2 months ago
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 15,342
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert
Verified

Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!

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Technician: Curtis B., Technician replied 2 months ago

Engine make and model? Single or twin engine?

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Customer reply replied 2 months ago
it is a 7000 series kt 35 kohler
Technician: Curtis B., Technician replied 2 months ago

Twin Kohler? Run a cylinder test, loosen the spark plug wires, and with the engine idling, remove one wire at a time, the engine should continue to run if the engine dies when the wire is removed, the opposite cylinder is not firing.

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Customer reply replied 2 months ago
already done that ok it seems to be a fuel problem
Technician: Curtis B., Technician replied 2 months ago

Make a test line and attach it to the inlet of the fuel pump and drop it back into the fuel tank filler opening, bypassing the tank outlet up to the fuel pump and run test.

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Customer reply replied 2 months ago
will give that a try but why would choking a small amount resolve problem
Customer reply replied 2 months ago
new filter and new fuel pump
Technician: Curtis B., Technician replied 2 months ago

Yes, choking adds extra fuel and less air.

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Customer reply replied 2 months ago
i will try the by pass line
Technician: Curtis B., Technician replied 2 months ago

It is worth a try, and many times will show where the problem is.

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Customer reply replied 2 months ago
same problem i used clear plastic line and plenty of fuel
Technician: Curtis B., Technician replied 2 months ago

OK< and engine will run on either cylinder?

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Customer reply replied 2 months ago
i have removed and cleaned carb also run with out air cleaner
Customer reply replied 2 months ago
same surging
Technician: Curtis B., Technician replied 2 months ago

I'm out of ideas. I will opt out and see if someone else can help. Sorry.

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Customer reply replied 2 months ago
ok
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