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Jetting

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Posted by: gearheadjlm---------------------

Alright, I just got my bike. It's been sitting for a year with out being riden. However, it fires right up and idles great. However, this thing is slow as balls. I had a stock '04 CRF150 waste me in acceleration. The bike has the air box modded and a Dynoport pipe. I'm trying to determine if my bike is running to lean or to rich, and need suggustions if maybe I should just take apart the carb and clean it, or if it's going to need jetted, the previous owner says it used to not have any problem doing wheelies and was a great powerful bike. Any suggustions? I'm going to try to clean out the carb, but if it is going to absolutely need jetted then I'll wait till I get jets? What do you guys recommend? With just the pipe will it kill the performamce that much? Although I do not want to have this turned into a fuel mixture thread, I am running 32:1. Also, I read through and searched, but wanted some direct advice. Thanks

Joe

Also: I tried moving my needle down and noticed no difference, I haven't tried moving it up yet...



Posted by: Tusk---------------------

If the bike has been sitting for a year, the carb needs cleaning for sure. It doesn't go without saying that you DID put fresh premix in yes? Mixing fresh with old gas won't help much. Drain it all and put in fresh.

As for the CRF150... they're designed to be quick in acceleration. However, get a rematch after your carb rebuild.



Posted by: G. Gearloose---------------------

Quote:
Originally Posted by Tusk

As for the CRF150... they're designed to be quick in acceleration.


BWAAAHAAHAAA


Evan my clapped out '83 200 could stay even with a hyper quadracer 500.

A 230 is pokey slow and a 150 more still. You should have looked like the roadrunner pulling away from the coyote.



Posted by: gearheadjlm---------------------

Quote:
Originally Posted by Tusk
If the bike has been sitting for a year, the carb needs cleaning for sure. It doesn't go without saying that you DID put fresh premix in yes? Mixing fresh with old gas won't help much. Drain it all and put in fresh.

As for the CRF150... they're designed to be quick in acceleration. However, get a rematch after your carb rebuild.


Yes, Fresh premix, 32:1.

Quote:
Originally Posted by G. Gearloose
BWAAAHAAHAAA


Evan my clapped out '83 200 could stay even with a hyper quadracer 500.

A 230 is pokey slow and a 150 more still. You should have looked like the roadrunner pulling away from the coyote.


That's what I figured, I'm going to try taking the carb apart and cleaning everything up. Hopefully that'll give me satisfactory performance.

Thanks for the replies

Joe



Posted by: gearheadjlm---------------------

Bump



Posted by: longerdeeper---------------------

If the carb clean is no good,clean the plug, Check your power valves



Posted by: gearheadjlm---------------------

I'm going to check out the plug and powervalves today. Bike had huge increase in performance with carb cleaned and needle moved up one clip. How do I go about cleaning the power valve? Thank you for the replies.


Joe




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