Author Topic: Flat on bottom and doesn't Rev out like it should  (Read 2630 times)

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Offline Chrisgg90

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Flat on bottom and doesn't Rev out like it should
« on: March 14, 2016, 12:58:29 PM »
Hi Guys,

Just a quick one before I take a look in to it further to see if there is any thing specific I should be looking for.

My 1988 500 feels a little flat off the bottom and doesn't Rev out like it should. It's just had a top end rebuild after the cylinder was out for repair. I'm just wondering if the power valve maybe hadn't been set back up just right but don't think that would really affect the bottom end. So maybe carb setup ?

Any suggestion welcome I'll be taking a look on Thursday so any hints or tips appreciated.

Thanks

Offline reklessj

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Re: Flat on bottom and doesn't Rev out like it should
« Reply #1 on: March 14, 2016, 04:14:41 PM »
Check carb and electronics
My rides: 1994 KX500, 1988 T4, 1998, ZXI 1100 JETSKI, 2003 MOUNTAIN CAT 900
WIFES (Baby Fiver) rides: 2004 KTM 105SX,1992 LT250R, 1995 ZXI 900 JETSKI,  2011 RMK 600
SONS ride: 1995 YZ125,2002 RM 250
other rides: 2007 RMZ450 RC Ediition, 2003 RMK700

Offline Pmcg

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Re: Flat on bottom and doesn't Rev out like it should
« Reply #2 on: March 14, 2016, 10:05:45 PM »
If you take the kips cover off you should be able to actuate the rod.  If you take your exhaust off and shine a flashlight in there you just need to make sure the valves are rotating open.  After that its plug chops to get your jetting dialed in.  I'm delaing with the same thing right now.  Good luck. 

Offline b4himdude

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Re: Flat on bottom and doesn't Rev out like it should
« Reply #3 on: March 15, 2016, 11:43:09 PM »
after i got my sleeved cyloner back i put both rod valves in 100% backward.on the wrong side. so ya it wouldnt get any power to speak of when i throttled it. so maybe thats the issue.the one with the ring goes next to the idler. honestly mine wasmore flat on the top end. got no real strong power. the lower end didnt seem to be affected truthfully.
« Last Edit: March 15, 2016, 11:49:34 PM by b4himdude »
hell ,i,m so broke . if it cost a nickle to take a s**t, id have to puke.....