20 Most Recent Arctic Cat 2004 400 DVX Questions & Answers

coil you can test if you have a coil tester but doubt you do. CDI cant be tested. could also be a pick up coil on the stator, ignition switch, kill switch, tether if it has one.

Your service manual should tell you. https://searchmanuals.net/search7/?keyword=%2Bowners+%2Bmanual&gclid=Cj0KCQiAzePjBRCRARIsAGkrSm4hwGgMJ4loxVKnk_d9loNSyMnzjcinCTYKx6DBNotuk4W7EdNURhoaAggqEALw_wcB

I would recheck my battery cable connections for tightness and corrosion.

Check the charge on the battery, should be at least 12.6 Volts DC, then look for loose or corroded connections, starting with the battery cables.

Has the control system been scanned for fault codes? Do that first.

Sometimes when bad parts heat up they fail. I have seen this with the cdi. Be very aggressive when checking your connections. Do you lose spark after it has been run for a while or at certain temps?

something is still wrong in the carby or the fuel lines to the carby did you check the float level before assembly Change the plug leads to a better quality and replace the plugs is the exhaust system clean and not blocked with carbon or rust

Carb probly gut corroded from water. Get some cleanr from a marine stor and addit totank. Auto cleanr wont work

White smoke would be water. Blue smoke would be oil. Was the engine overheated ? If so probably a blown head gasket. Check oil and water to see how low they are and how milky they are.

guessing you changed the spark plug? .. you can fry the coil from heat...I used to wrap coils in rags when I tested them on a coil tester to try to make them break down from the heat quicker. It worked too.

fix your timing chain that should help

weak fuel pump, choke not working ? Here are the service manuals for all Arctic cat ATVs

Bad timing ? water in the fuel. here are the service manuals for all Arctic cat ATVs Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

Adjustment between the shift lever and gearbox here are the service manuals for all Arctic Cat ATVs Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

Common problem is there is water and dirt that gets inside the actuator and it strips the plastic gears inside. Here are the service manuals for all Arctic Cat ATVs Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

Sounds like the thermostat is not opening Here are the service manuals for all Arctic cat ATVs Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

Here are the service manuals for all Arctic cat ATVs Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

take off the horn unit power it direct if it works its ok, if not replace, next step wire a small bulb into the horn wires and press the button if it lights the switch is ok, if you have a circuit tester put one end on the battery ground and check for power in the horn wires if their is power there put the lead on battery positive and press the horn button if there is no power their the switch or wiring is faulty