Overheat or what?
Posted March 30, 2002 - 12:09 PM
Now, 2 weeks ago, i blew on of the seals in my water pump and replaced both and they have had 2 rides on them with no problems. Why would all the coolant blow out of that hole and then when I refill the radiator and let the bike cool a bit, it runs fine and no coolant loss? Wierd...
Any help is appreciated!
Posted April 01, 2002 - 06:26 AM
[ April 01, 2002: Message edited by: kozmic ]
Posted April 01, 2002 - 07:14 AM
Posted April 01, 2002 - 10:56 PM
Posted April 01, 2002 - 11:41 AM
I already replced both seals 3 weeks ago, so I can't imagine they blew up already??
They were installed as per the shop manual!
Posted April 02, 2002 - 05:40 AM
Ther ya go you let that guy Manual at the shop work on it.
My Buck 25
Coolant system has pressure points meaning at specific heat ranges the system will allow coolant out (Better then blowing a radiator), Since there is no collection tank it is va the seep hole.
Seals are made to blow but only under extreame conditions, (I.E. Challager) Ok Bad Example
But they are made to give way in extreame heat. I rode this week end in NoCal Hollister it was hot but not to bad. I noticed when I got home some seeping of coolant and oil from the appropriate places. Also the coolant has a life span of two years period it should be replaced regardless, or if you are really a hard player.....The coolant just maybe getting old and not able to handle the work out any more
I know you said it Leaked all out, but how old was the stuff prior to this ?
[ April 02, 2002: Message edited by: EgoAhole ]
Posted April 02, 2002 - 06:35 AM
Thanks for the reply. The coolant had maybe 3 hard desert rides. Wide open, sustained speeds at average temps. SoCal high desert is still chilly in the mornings. So, the coolant was in good shape. It was a 70/30 mix of water and rad fluid. I have been great cooling with that mix.
So, basically, you are saying I got the engine damn hot withmy slow-speed hill-climb and the fluid went out the weep hole instead of the radiator overflow?
Maybe it was all the sand I put in the radiator for ballast?
Posted April 02, 2002 - 06:56 AM
I have to disagree with the Ahole
The weep hole is not going to let water out under heat before the overflow...unless
A. The overflow is blocked.
B. There is a bad seal on the water pump.
A two-smoke buddy of mine has a leaky weep hole (actually I think I might just start calling him that "leaky weep hole" but I digress). He replaced the outer seal on the water pump housing and still, leaky weeper...Then I learned that there are seals on the shaft of the impeller itself and if that is bad it can cause weep seepage.
Anyway, I still say it's probably a bad seal on the water pump and I've heard some say that it's easy to mess one up reassembling...
Anyone else out there with experience to share...
If there's one thing I hate it's a leaky weep hole
Good Luck and let us know what the fix is...
Posted April 02, 2002 - 08:46 AM
Honesty I was just jabbing at ya for fun and all.
Like I said I had a buddy with this problem and it seemed like a seal issue. And, if you're wrong, and I'm wrong...then what's the problem?
I'll bet that unless there's a problem that hole is supposed to stay dry...
Could be wrong but then...well, 'nuff said.
Don't get your ego confused with your ahole
Posted April 02, 2002 - 08:59 AM
No I have no problem getting ego and ahole confused, Its just so dang hard not having an EGO when I am "RIGHT" all the time
No worries all is far in love and war
Posted April 02, 2002 - 09:34 AM
Well, I am going to tear it apart tonight and see what's up with it. Maybe my new seal has a tear I didn't see when I installed it. Maybe I need to tear me a new EgoAhole?
Posted April 02, 2002 - 01:49 PM
I had the same problem after replacing my piston. Some dumb jerk didn't torque my head bolts correctly... So my head-gasket blew and did exactly what you have described. If you can't find the problem anywhere else first, you might give it a look. P.S. Replace the gasket (if that is the problem) with stock Yammaha. You'll be much happier in the long run.
Hope this helps.
Posted April 05, 2002 - 04:17 PM
Don't forget to let us know what the fix is/was.
Otherwise I will assume I was right and then I don't learn anything...and if I was right then I get to lean into Ego a bit
Also, the head gasket sounds like a possibility...that may explain it too.
Posted April 05, 2002 - 05:44 PM
Posted April 05, 2002 - 09:23 PM
I decide to fire her up and see if any fluid will come out of the hole again under pressure. I made sure I was ready to kill the motor, just in case.
So, she fires right up and I let it idle since we all know how hot these things get when they just sit there. No leaking. Then go up and down the street a couple times. No leaking.
What the hell?????
Posted April 06, 2002 - 05:16 AM
Posted April 06, 2002 - 06:49 PM
These parts aren't expensive, so I might as well replace them to just be sure!
I'll let you all know how it goes!
Michigan Motocross Tires by 288yz450
yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F
Thinking about Yamaha 250... by Arctic Pride
yz400f throttle bog by yz400fmaniac