Hard starting 440ex in the cold....
#1
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My husband has a ’99 440ex that does not want to start in this cold weather. It will crank over but it will NOT fire, even with a new Split Fire plug. The valves have recently been adjusted and the jetting is perfect. He mixes 3 gal.of pump gas with 1 gal.of Torco race gas in the quad.
It has to be pulled to get it to start and even then it can be difficult. Once it is warmed up, it runs great.
The Honda shop said the higher compression will make the quad harder to start. The bore kit was put in over the summer but he has had an after market piston(11:1)in it for well over a year now. This is the first winter he has had this problem. My ’01 400ex is a real pain to start in the cold too but his 440ex is BAD now!
Any suggestions as to what the problem could be?
Thanks…
It has to be pulled to get it to start and even then it can be difficult. Once it is warmed up, it runs great.
The Honda shop said the higher compression will make the quad harder to start. The bore kit was put in over the summer but he has had an after market piston(11:1)in it for well over a year now. This is the first winter he has had this problem. My ’01 400ex is a real pain to start in the cold too but his 440ex is BAD now!
Any suggestions as to what the problem could be?
Thanks…
#2
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I take it that its not in a heated area?? I recently had a problem starting mine and it took me 30 mins to get it going!! After 15mins into starting it I said " screw it!! I'm breaking out the salamander" But, I did have to change my spark plug because I flooded it. Let that thing blow on my 400 for about 10-15mins and "VROOOOM"
#3
#4
#5
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I have heard many people having this problem. My 453 seems perfect. It has a DPR8Z plug and is jetted probely. Maybe other peoples problems are just their jetting. A week ago is was 7 degrees and it fired right up perfect. I choke it and don;t give it any gas. When it starts I got to half choke and baby it around the lawn for a couple minutes, then i turn the choke off and giver er heck. I did notice that it cranks much slower but still fires up quickly.
#6
#7
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Hey guys, try my Cold XR starting method I use on XR500 and 600R's
1. Full choke-full throttle-keep second ignition switch off-crank threw for 2 seconds to prime
2.full choke-ignition on-no throttle crank 3 seconds max
3. If no fire, try quarter throttle full choke
4. still no fire? Repeat all steps only with No choke because shes a flooded
1. Full choke-full throttle-keep second ignition switch off-crank threw for 2 seconds to prime
2.full choke-ignition on-no throttle crank 3 seconds max
3. If no fire, try quarter throttle full choke
4. still no fire? Repeat all steps only with No choke because shes a flooded
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#10
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Is the gas old?? Like over a week?? try putting fresh gas in there... Drain the carb then put gas in... Also I use a product called Ventstop (www.ventstop.com) that seals the gas tank so the gas does not start to brake down.. There is a review of it on atvconnection at https://atvconnection.com/atvconnect...s/ventstop.cfm I notice my 400 starts much easier...
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TegraQuad
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11-26-2017 01:40 PM
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