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My deere ztrack with a 25 hp koher engine is shooting fire…

My john deere ztrack...

My john deere ztrack with a 25 hp koher engine is shooting fire from exhaust any idea of problem

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Equipment Mechanic I'm going to connect you with knows all the tricks and shortcuts.

My ztrak with a 25 hp omv kohler engine is shooting flames from the exhaust any idea of problem

Mechanic's Assistant: Are you fixing this yourself? What have you tried so far?

Yes but i haven t tried any thing yet

Mechanic's Assistant: Anything else you want the agriculture mechanic to know before I connect you?

I dont think so

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Answered in 11 minutes by:
3/11/2018
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 31,448
Experience: Technican turned service manager with multiple lines of equipment and rental units.
Verified

Hello! Let's see if we can work together and come to a satisfactory conclusion!

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Customer reply replied 4 months ago
ok where should i start

Dos engine loose power? Excessive gas through the exhaust causes the fire! Check each cylinder for spark by loosing the spark plug wires, and with engine idling, remove one wire at a time. The engine should continue to run, If it dies when either wire is removed, the opposite cylinder is not firing.

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Customer reply replied 4 months ago
I prefer email

A dead cylinder lets the gas go into the exhaust and causes the fire. We can work here, no need for call.

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Customer reply replied 4 months ago
how can i tell if its a dead cyl

You missed my first response. Scroll up.

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Customer reply replied 4 months ago
it doe not loose power

Run the cylinder test for a place to start.

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Customer reply replied 4 months ago
How do I run a cyl test

Check each cylinder for spark by loosing the spark plug wires, and with engine idling, remove one wire at a time. The engine should continue to run, If it dies when either wire is removed, the opposite cylinder is not firing.

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Customer reply replied 4 months ago
ok this i will do. should i contact you afterwards or do you want to give me further instructions

I will be here, just come back and we will go from there.

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Customer reply replied 4 months ago
motor continues to run with either plug wire off

OK, so the engine is firing on both cylinders. When did the fire from exhaust show up? Is it using excessive amounts of fuel, like the choke is no? Any back smoke from exhaust?

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Customer reply replied 4 months ago
no black smoke but a smell of fuel at times

Carburetor may have leaking needle valve and the float is not controlling the fuel flow, so it sends excessive fuel to the cylinders. Rebuilding or replacing the carburetor would be required.

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Customer reply replied 4 months ago
Ok I will check carb. Thanks for the help

Thank you!

Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 31,448
Experience: Technican turned service manager with multiple lines of equipment and rental units.
Verified
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