Cold starting a 400ex
#24
#25
Cold starting a 400ex
If its been sitting more than a couple weeks then drain float bowl until you see steady stream of gas hitting the drain pan. Too many 400EX owners run heavy oil like 20-50 year round. Switch to 10-40 in the winter. I often turn up idle if its been sitting awhile. Start um up at least every two weeks and keep the tank topped off while sitting. If sits longer than a couple weeks use Sta-Bil. The bigger pilot is great tip. Also adjust pilot mixture screw after you get it running and it warms up good.
#27
Cold starting a 400ex
This is my cold starting situation.
When it gets below 40 degrees or so it is real hard to start.
My 400EX has a 11:1 stock bore piston a stage 2 hot cam, pipe and jet kit(with a 42 pilot), K&N with outerwere, high rev box, and the air box cover removed. The only thing else modded on my engine is that I took my choke out (suppose to gain 1 hp). That was my only mistake. When I tried putting it back in I stripped out the little screws that hold the chokeplate in, and ended up breaking one of them off in the choke rod. So I just eliminated my choke all together. If I have my quad in my semi-heated garage (45 degrees) put in the stock rev box and blerp the throttle a couple times it slowly starts. The problem is I can't just order a new choke assembly, I have to order a whole new carb to get the parts that I broke.
Does anyone have a used carb I can buy?
I also her somewhere that there is a higher powed batery you can buy, but I dont know what size it is. ??
Is there anything else I can do to besides getting a new carb?
When it gets below 40 degrees or so it is real hard to start.
My 400EX has a 11:1 stock bore piston a stage 2 hot cam, pipe and jet kit(with a 42 pilot), K&N with outerwere, high rev box, and the air box cover removed. The only thing else modded on my engine is that I took my choke out (suppose to gain 1 hp). That was my only mistake. When I tried putting it back in I stripped out the little screws that hold the chokeplate in, and ended up breaking one of them off in the choke rod. So I just eliminated my choke all together. If I have my quad in my semi-heated garage (45 degrees) put in the stock rev box and blerp the throttle a couple times it slowly starts. The problem is I can't just order a new choke assembly, I have to order a whole new carb to get the parts that I broke.
Does anyone have a used carb I can buy?
I also her somewhere that there is a higher powed batery you can buy, but I dont know what size it is. ??
Is there anything else I can do to besides getting a new carb?
#29
Cold starting a 400ex
Originally posted by: Quad999
This is my cold starting situation.
When it gets below 40 degrees or so it is real hard to start.
My 400EX has a 11:1 stock bore piston a stage 2 hot cam, pipe and jet kit(with a 42 pilot), K&N with outerwere, high rev box, and the air box cover removed. The only thing else modded on my engine is that I took my choke out (suppose to gain 1 hp). That was my only mistake. When I tried putting it back in I stripped out the little screws that hold the chokeplate in, and ended up breaking one of them off in the choke rod. So I just eliminated my choke all together. If I have my quad in my semi-heated garage (45 degrees) put in the stock rev box and blerp the throttle a couple times it slowly starts. The problem is I can't just order a new choke assembly, I have to order a whole new carb to get the parts that I broke.
Does anyone have a used carb I can buy?
I also her somewhere that there is a higher powed batery you can buy, but I dont know what size it is. ??
Is there anything else I can do to besides getting a new carb?
This is my cold starting situation.
When it gets below 40 degrees or so it is real hard to start.
My 400EX has a 11:1 stock bore piston a stage 2 hot cam, pipe and jet kit(with a 42 pilot), K&N with outerwere, high rev box, and the air box cover removed. The only thing else modded on my engine is that I took my choke out (suppose to gain 1 hp). That was my only mistake. When I tried putting it back in I stripped out the little screws that hold the chokeplate in, and ended up breaking one of them off in the choke rod. So I just eliminated my choke all together. If I have my quad in my semi-heated garage (45 degrees) put in the stock rev box and blerp the throttle a couple times it slowly starts. The problem is I can't just order a new choke assembly, I have to order a whole new carb to get the parts that I broke.
Does anyone have a used carb I can buy?
I also her somewhere that there is a higher powed batery you can buy, but I dont know what size it is. ??
Is there anything else I can do to besides getting a new carb?
I don't remember off the top of my head but couldn't you drill out the old screw and get replacements to mount the choke plate?
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Big600twin
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06-10-2015 03:01 PM
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