Crank seal symptoms?
Crank seal symptoms?
My 89 CR500 seems to run great, except for, I cant seem to get it to idle. There is no excessive smoke, no spooge out the exhaust, and it seems to have plenty of bottom/top end power. Would a worn crank seal(s) cause bike not to idle? I would have thought a air leak would cause a really lean condition, with a high idle. Anyways, except for the fact that my bike doesnt want to idle, it runs great. Top end is fresh BTW. Thanks for any input in advance
- britincali
- Posts: 8207
- Joined: May 31st, 2007, 7:10 pm
- Location: Barstow, CA
Re: Crank seal symptoms?
If it aint smoking its not the seals.
Is the piston in the right way around?
Coolidge wrote: Top end is fresh BTW.
Is the piston in the right way around?
Coolness list by 90cr500guy
Bob's = 50/50
Cepek = cool
Solidbro = cool
Brit = loser
Stoffer = 1 up from Brit
MFDB = cool
Danny = ok
Bob's = 50/50
Cepek = cool
Solidbro = cool
Brit = loser
Stoffer = 1 up from Brit
MFDB = cool
Danny = ok
Re: Crank seal symptoms?
Wha?britincali wrote:If it aint smoking its not the seals.
Worn seals let air in. Extra air = lean condition. Lean = no smoke.
Am I wrong?
No longer have a CR500.
07 Yamaha YZ250, 17 Husqvarna 701 Enduro
Get on with riding or get on with dying.
https://www.youtube.com/mojoscojo
07 Yamaha YZ250, 17 Husqvarna 701 Enduro
Get on with riding or get on with dying.
https://www.youtube.com/mojoscojo
Re: Crank seal symptoms?
It does have a PJ, and you do konw how to adjust it ( Spin the choke knob for idle speed, A/S for mixture) correct?Coolidge wrote:I cant seem to get it to idle.
- britincali
- Posts: 8207
- Joined: May 31st, 2007, 7:10 pm
- Location: Barstow, CA
Re: Crank seal symptoms?
MojoScojo wrote:Wha?britincali wrote:If it aint smoking its not the seals.
Worn seals let air in. Extra air = lean condition. Lean = no smoke.
Am I wrong?
The mag side seal almost never goes out and if it did happen to be bad the bike would be sucking air and idling high.
Coolness list by 90cr500guy
Bob's = 50/50
Cepek = cool
Solidbro = cool
Brit = loser
Stoffer = 1 up from Brit
MFDB = cool
Danny = ok
Bob's = 50/50
Cepek = cool
Solidbro = cool
Brit = loser
Stoffer = 1 up from Brit
MFDB = cool
Danny = ok
Re: Crank seal symptoms?
Yes, I messed w/it this past weekend (choke/idle knob). Plus adjusted airscrew. I got burned out working on it in the dez, so I continued riding my XR all weekend. Twice I had to push the bike back after it died on a low idle. That kinda sucked....Im gonna check the seals, carb, boots, etc anyway. BTW, thx for GSS contact info. Turns out he's real close to where Im at in Lancaster/Palmdale.AlisoBob wrote:It does have a PJ, and you do konw how to adjust it ( Spin the choke knob for idle speed, A/S for mixture) correct?Coolidge wrote:I cant seem to get it to idle.
Last edited by Coolidge on May 29th, 2009, 8:57 am, edited 1 time in total.
Re: Crank seal symptoms?
So, If left side is worn, it would suck air and idle high. If bad on rt (clutch) side, oil would be pumping thru motor, causing smoke,but not affecting idle? Si?britincali wrote:MojoScojo wrote:Wha?britincali wrote:If it aint smoking its not the seals.
Worn seals let air in. Extra air = lean condition. Lean = no smoke.
Am I wrong?
The mag side seal almost never goes out and if it did happen to be bad the bike would be sucking air and idling high.
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- Posts: 4394
- Joined: July 4th, 2007, 6:57 pm
- iggys-amsoil
- Posts: 3602
- Joined: June 1st, 2007, 6:09 pm
- Location: Just North of March Airfield CA
Re: Crank seal symptoms?
I had a RM125 (I still wonder why) way back and it had the clutch side crank seal gone and that much splooge came out of the exhaust that the rear caliper was covered after a couple hour ride. The good news is it is not a big deal to replace.britincali wrote:If it aint smoking its not the seals.
Coolidge wrote: Top end is fresh BTW.
Is the piston in the right way around?
Steelie Build Done
Gen 1 CR500 AF Complete - SOLD
Gen 1 CR500 AF Complete - SOLD
OK, good news. I had a chance to remove rear subframe, R&R some funky hardware, and generally clean things up. I didnt fully disassemble carb, just set air screw, idle/choke, tightened things up. I then removed Ign side cover. Absolutely dry. Only issue was some corrosion on flywheel (PO used to go to Pismo) anyways, I cleaned up flywheel, sealed tattered frt grommet, reinstalled Boyesen cover. Now bike fires 2nd kick cold w/choke, Then settles down to a nice idle. I'll post some pics as I get er ready and cleaned up. Thanks all ~Guy
Sounds like she just wanted some attention.
No longer have a CR500.
07 Yamaha YZ250, 17 Husqvarna 701 Enduro
Get on with riding or get on with dying.
https://www.youtube.com/mojoscojo
07 Yamaha YZ250, 17 Husqvarna 701 Enduro
Get on with riding or get on with dying.
https://www.youtube.com/mojoscojo