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AV8OR

Does it hurt not to use the Hot start?

14 posts in this topic

I just got a used 2001 YZ426 this jan and have been riding her a lot....I have found out that she kicks over much easier when I don't use the hot start if i stall her or something after riding for a while....I don't think so, but does this do any harm to the engine at all?? I highly doubt it, but thought I would just ask some more experianced people!

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No.

What sort of temperatures do you ride in? Mine often starts without it too, and I'm riding in 30C temps.

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Won't hurt it. At least it's not hurt my '01 426 yet. I guess our jetting or fuel/air mix is a little off seeing as our bikes actually crank easier without the hot start button.

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I noticed that I needed the hot start more and the choke less once I got the jetting dialed in closer to where it should be.

If the bike has been shut off for more than a couple of minutes (like time to stop and take a leak), then I don't need the hot start, but if it's a quick shutdown, or especially a stallout or getoff, I'll need to hit it real quick... and really just a jab during the kick.

Before I rejetted, opening the hot start didn't change the engine RPM. Now it increases dramatically.

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All the hot start does is open an additional air passage in the carb to lean out the starting mixture. If the bike starts better without it, it may be a sign that it's marginally lean. But it starts the way it starts, and you're not hurting anything however you do it.

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Dealer told me that using the choke and hot start at the same time would warp the valves :naughty:

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Dealer told me that using the choke and hot start at the same time would warp the valves :naughty:

Sounds like good advice from another "educated dealer" then :naughty: Not sure how he thought this would happen. I wish they'd educate some of these guys before letting them loose on the general public

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Dealer told me that using the choke and hot start at the same time would warp the valves :naughty:
Well, that is right up there with the better examples of Bovine Scatology (the study of incorrect facts, called BS by some) that I've heard from experts in Sales and Parts. I give it :naughty::D:D

Actually, with one making it richer and tthe other leaner, it would be a great deal like pissing upwind.

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But isn't it true that the choke actually adds more fuel (instead of "choking" the air)? If this is the case, the mixture may not change too much, there will just be more air and fuel available.....

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thanks guys.....I have been riding in 22C degree temps...Jetting seems right on, but I get the feeling when its starts getting really hot this summer I will need to use the hot start.

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My rule of thumb is that after the bike is warmed up, let it idle. When you pull the hot start, it should speed up the idle (because you are leaning it out). If it only dies, then you are jetted too lean already. If you don't need the hot start at all... it may bee too lean.

Jimbo

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Dealer told me that using the choke and hot start at the same time would warp the valves :naughty:

Some people are just sssoooooo stupid!! Apparently, your dealer is one of them!

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My rule of thumb is that after the bike is warmed up, let it idle. When you pull the hot start, it should speed up the idle (because you are leaning it out). If it only dies, then you are jetted too lean already. If you don't need the hot start at all... it may bee too lean.

Jimbo

I agree with Jimbo on this.

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But isn't it true that the choke actually adds more fuel (instead of "choking" the air)? If this is the case, the mixture may not change too much, there will just be more air and fuel available.....

The choke opens the starter jet circuit. Probably in conjunction with the pilot jet but I don't really know. More fuel, same air.

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