Arctic Cat T660 Suddenly Stalls: Quick Fixes

Have you recently started your Arctic Cat T660, only to find that it stalls or won't stay running? You're not alone. Here we'll explore some common reasons for this issue and guide you through troubleshooting and potential fixes.

an atv is parked in the grass
an atv is parked in the grass

Don't let this setback dampen your spirits. With a little know-how and some diagnostic checks, you can get your T660 purring like new in no time. Let's dive in and tackle this issue head-on.

a green four - wheeler driving down a dirt road in the woods
a green four - wheeler driving down a dirt road in the woods

Fuel System Issues

The fuel system is a common culprit when an engine starts but won't stay running. Let's explore two critical areas within the fuel system that could be causing your T660's troubles.

a green keep calm and ride arctic cat poster with skull on it's side
a green keep calm and ride arctic cat poster with skull on it's side

Remember, safety first. Always ensure your engine is cooled down before starting any diagnostic checks or repairs.

Clogged Fuel Filter

a person standing in the snow with their skis on his back and feet up
a person standing in the snow with their skis on his back and feet up

A clogged fuel filter can starve your engine of vital fuel, causing it to stagger or stall shortly after starting. Located between the fuel pump and the engine, a blocked filter is an easy fix.

Replacing your fuel filter is a straightforward process. Disconnect the fuel lines, remove the old filter, and install the new one. Don't forget to prime the fuel system after installation to ensure no air bubbles remain.

Faulty Fuel Pump

a black and white snowmobile parked in front of a garage
a black and white snowmobile parked in front of a garage

If your fuel filter checks out, the next suspect could be a faulty fuel pump. When the pump fails, it may provide enough fuel to start the engine but cannot maintain the required fuel pressure for continuous operation.

To diagnose a bad fuel pump, listen for any unusual noises coming from your fuel tank during engine operation. If the pump is faulty, you may hear a squealing or grinding sound. Replace the pump if you suspect it's malfunctioning.

Ignition and Spark Plugs

a green and black snowmobile is parked on the pavement in front of other vehicles
a green and black snowmobile is parked on the pavement in front of other vehicles

Problems with your ignition system or spark plugs can cause difficulty keeping your T660 running. Let's address these potential issues and how to resolve them.

Before you start, gather your tools and a new set of spark plugs, just in case you need to replace them.

Coming Back Over - Need Opinion on ZRT's
Coming Back Over - Need Opinion on ZRT's
a green and black four wheeler parked in front of a building
a green and black four wheeler parked in front of a building
a green and black snowmobile parked in the snow next to a arctic cat sign
a green and black snowmobile parked in the snow next to a arctic cat sign
a black and green snowmobile on a white background with the words arctic cat written below it
a black and green snowmobile on a white background with the words arctic cat written below it
several snowmobiles are parked on the grass in front of people standing near them
several snowmobiles are parked on the grass in front of people standing near them
several snowmobiles are parked in a showroom
several snowmobiles are parked in a showroom
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ad eBay | $1999.00 | 2017 Arctic Cat® LYNX 2000 LT ES WHITE BLACK | Powersports |Snowmobiles | |eBa
a four wheeler is parked in the grass
a four wheeler is parked in the grass
an orange and black snowmobile parked on the sidewalk
an orange and black snowmobile parked on the sidewalk
Tech 2016: Arctic Cat Rapid Response CVT System | Snow Goer
Tech 2016: Arctic Cat Rapid Response CVT System | Snow Goer

Dirty or Worn Spark Plugs

Spark plugs that are fouled, worn, or have damaged electrodes can fail to ignite the fuel-air mixture consistently. This can lead to misfiring or stalling, especially under load.

Remove the spark plugs and inspect them for any signs of wear or damage. If needed, replace the plugs with new ones, ensuring you select the correct type for your T660.Gap the new plugs according to the manufacturer's specifications and install them.

Faulty Ignition Coil

A faulty ignition coil may fail to provide the necessary spark intensity, leading to difficulty keeping your T660 running. To diagnose a bad coil, perform a simple multimeter test to ensure it's producing the correct output voltage.

If the ignition coil tests faulty, replace it with a new one. Be sure to select a coil specifically designed for your Arctic Cat T660. After installation, double-check your engine's performance to confirm the issue has been resolved.

With a keen eye and some elbow grease, you've now diagnosed and addressed the most common reasons your Arctic Cat T660 might start but refuse to stay running. By keeping your T660 well-maintained and addressing any issues promptly, you'll ensure many more miles of adventurous riding.

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