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kfx450r

Diagnose my problem please!

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I just read that you should never use a synthetic oil in your tranny. Causes slipping.

The stuff i used isnt synthetic, its what everyone at trx450r.org recommended, but Iam switching to synthetic honda oil for my engine side

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Omg I cannot figure this out..Im starting to think it could be the jetting from the factory..I always heard they run a little off. I mean, To best explain whats happening goes like this

Im in 5th..Low to lower mid 5th, cruising.. then i NAIL it..and it doesnt rev or pull or bog for like half a second it just kinda stops THEN it pulls strong. Is that jetting or clutch.

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That's your jetting. Mine does that too. The reason being on mine is I have an after market pipe and that's all. When I slam the throttle open I'm dumping more exhaust out than I'm takin in air. So it almost acts like it floods for a quick second. What elevation do you ride at? From the factory it is jetted to run at sea level. If you would have explained it like that along time ago I would have answered right away. The info I just gave was from my mechanic. Get your carb dialed in with a jet kit and that will go away.

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That's your jetting. Mine does that too. The reason being on mine is I have an after market pipe and that's all. When I slam the throttle open I'm dumping more exhaust out than I'm takin in air. So it almost acts like it floods for a quick second. What elevation do you ride at? From the factory it is jetted to run at sea level. If you would have explained it like that along time ago I would have answered right away. The info I just gave was from my mechanic. Get your carb dialed in with a jet kit and that will go away.

..Well chit..cuz im at sea level....My full pipe and jet kit is coming early next week. PLEASE let it be the jetting, could it be that somethings broken in the carb, or dirty or something? Cant see how never messed with it, whats the chances that its all factory jetting and it will be fixed once i rejet

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I highly doubt it is too..My friends says it will always do that pretty much..so imma just rejet and hope it goes away..Im so relieved

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The way I worked around it was just trial and error. If I open fast but smoothly instead of all at once it doesn't do it. That is the only time it does it right? Just when you romp on it.

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The way I worked around it was just trial and error. If I open fast but smoothly instead of all at once it doesn't do it. That is the only time it does it right? Just when you romp on it.

Yes..like i said low fifth and i pinned it instantly..

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Mine will do it in neutral also. get your ride idling in Neutral and see if it still does it. If it's only happening in 5th gear there is another issue. Is your ride very throttle sensitive? Meaning does it stall easy from a stand still?

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Mine will do it in neutral also. get your ride idling in Neutral and see if it still does it. If it's only happening in 5th gear there is another issue. Is your ride very throttle sensitive? Meaning does it stall easy from a stand still?

Yes, unless its been riden all day, it stalls alot. Not overly too much but more than id like.

But i dunno if its only in fifth..It does it in 4th too..ive never just nailed it in any other gear

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It will do it in every gear.

iM prettttty damn sure its the jetting by now. I believe when i first noticed it when i was riding i was in 3rd..so yeah pretty much every gear.

FORTUNATLY my exhaust, jet kit, cover, filter kit all get here tomorrow! Woo cant wait to get it all in :yes:

Hey, bot, how often do you change your oil, what oil do you use and how often do u change your oil filter ...and how often do u change your tranny oil..

Some run down, my bikes 4 weeks old, Ive changed oil in it about 2 weeks ago? Maybe 1 week i forgot, changed tranny oil a few days ago. Havent changed the oil filter yet but Im probly changing the oil again after I install all my new stuff and putting in a new filter. Im using HP4M 10w40 and 80/85 honda tranny oil. Should I switch to the HP4S fully synthetic over the moly?

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I use the same oil in both sides. GN4 from the Honda shop. I change my oil about every 3 rides. I replace the filter every other oil change. I change the tranny oil at the same time. As for the tranny side, Honda recommends GN4 or HP4 without moly 10w-40 is correct. And I heard the synthetic will make the tranny slip.

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I use the same oil in both sides. GN4 from the Honda shop. I change my oil about every 3 rides. I replace the filter every other oil change. I change the tranny oil at the same time. As for the tranny side, Honda recommends GN4 or HP4 without moly 10w-40 is correct. And I heard the synthetic will make the tranny slip.

Well..Like i said..I use 80/85 Honda performance tranny oil...the synthetic would be for the engine side..I never use the same oil in both sides so it wouldnt be synthetic in the tranny side.

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dude its your jets. if the clutch was slipping it wouldn't be pulling hard or bogging... you will know when your clutch begins to go...

I know, ive already said that i know its the jets..

And im rejetting it tomorrow.

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