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Old 04-13-2011, 03:43 PM   #1 (permalink)
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97 Recon losing power at higher rpms

New to this board but been riding hondas since 1981....

I recently bought a 1997 recon 250 for a cottage spare machine. It starts and runs perfectly and you can ride around / work all day long in 1st 2nd gear.

Here is the but...take it on a road and by the time you top 3rd and get half way through 4th it starts to bog down and you will never get to 5th. it will bog to the point of coming to a complete stop and then won't do anyting but idle for 3-5 min. If you try it will just bog.

This is getting expensive...top and bottom rebuilt with no change to the problem. Fuel system is clean.

Anyone seen this before? ideas? Please!!!!

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Old 04-13-2011, 05:10 PM   #2 (permalink)
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might be carburator, someone else will help more
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Old 04-13-2011, 08:29 PM   #3 (permalink)
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well i have a 1997 recon, check the carbuerator and see if its clogged or needs jetted, if it aint it tighten your clutches and if its not it check your rear end....i had a similar problem
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Old 04-14-2011, 12:58 PM   #4 (permalink)
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Quote:
Originally Posted by Tackett View Post
well i have a 1997 recon, check the carbuerator and see if its clogged or needs jetted, if it aint it tighten your clutches and if its not it check your rear end....i had a similar problem

It's got to be engine and not clutches /gearbox/ driveline. When it bogs out you can start it in Neutral and it will idle. But as soon as you touch the gas (still in N) it starts to studder and bog for a few min until whatever is going on goes away.

First we thought it was low compression. New rings/piston/hone and 135 psi. later the problem is the same. Then we thought it was the rod bearing getting hot under load and getting tight then cooling down. Rebuilt bottom end, still have the same problem.

Anyone seen a valve train issue that would act like this?

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Old 04-14-2011, 07:34 PM   #5 (permalink)
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hmmm...i know you can also check the nipple on the carbuerator and see if it helps cause sometimes when the nipple is bent in or w/e it makes ur fourwheeler bogg down...
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Old 04-15-2011, 08:35 AM   #6 (permalink)
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Could be but I'm fairly sure it's not a carb issue. Cleaned twice (once professionaly) good fuel flow through the tank line and needle and seat. Runs great at all rpm's around the yard. it's just when you put a long load on it. (i.e. accelerating up a long hill from 1st through 5th.) Also when it acts up, the the choke has no effect on how it runs making it better or worse so I'm betting it's not a fuel / Air issue.

I do however wonder about the CDI somtimes....
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Old 04-18-2011, 01:06 PM   #7 (permalink)
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Bump.....Anybody got any ideas to try?
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Old 04-18-2011, 01:16 PM   #8 (permalink)
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Could be the CDI. The timing advance is built into the CDI and it might not be advancing properly. Since you're confident the carb is clean, that would be my next guess.
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