Question about 2003 Honda CRF 450 R

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2003 crf 450 leaking coolant from hole from the bottom of the case under the water pump. What does this indicate?

Leaking coolant from hole from the bottom of the case under the water pump. What does this mean.

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It means your water pump seal is seeping at this point. Eminent failureportended. Replace water pump. Seals on pumps usually fail because of bearing wear, so this is a precursor to pump shaft failure. Good luck

Posted on May 27, 2009

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1 Answer

Why is my car losing coolant?


If there are no visible leaks, and if the vehicle has 50K or more miles, it could be the water pump. Water pumps can leak small amounts of water out the "weep hole" while running (this is to indicate wear and need for pump replacement before failure), but seal up when shut down. This leaking water will often evaporate on the block or trail under the vehicle. Sometimes, if you look at the underside of the hood just above the serpentine belt, you may see a vertical discolored stripe on the paint or insulation. This may be coolant that drips onto the serpentine belt and is flung upward., but this is not always the case. Usually, if the week hole is leaking, if you can get a visual look at the bottom of the water pump pulley (often hard to do), you may see some indications of coolant seepage.

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1 Answer

2006 yz450f coolant leak water pump weep hole


Take compressed air and blow air up into the the weep hole. For some odd reason it made 3 different CRF's stop leaking. It's worth a shot.

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1 Answer

2002 Honda CRF 450 R coolant leaking out of the weep hole


Hi, Anonymous the water pump seal has failed for this scenario you will need your service/owners manual if you can't find the best tool you ever bought for your Honda, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Apr 14, 2013 | 2002 Honda CRF 450 R

1 Answer

I have a 2000 yz426f.Its leaking from the small hole on the bottom of the water pump do i need to replace the water pump? and can i do that myself ?


Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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1 Answer

2004 Honda CRF 450 R water pump leaks


Hi, Lanepitts48 for this scenario you will need your service/owners manual if you can't find the best tool you ever bought for your Honda, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Honda CRF450X 2005 Service Manual
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May 09, 2010 | 2004 Honda CRF 450 R

1 Answer

I have a 2006 CRF 450, at the track I noticed a


yes sir the seal hole should not be oblong, was the bearing bad when you took it out? sounds like the shaft has worn out the hole.

Apr 08, 2010 | 2005 Honda CRF 450 R

1 Answer

Leaking coolant out of overflow and leaking out of weep hole under water pump.


hello sounds like its running hot to be pushing out of overflow, you will need water pump if its coming out of weep hole, good luck

Mar 31, 2010 | 2005 Honda CRF 450 R

2 Answers

I have antifreeze leeking out a pin hole under the water pump


It is very likely the water pump seal. It is always a good idea to replace the bearing while you have it opened up.

Jan 13, 2010 | 2002 Honda CRF 450 R

2 Answers

Lossing water out of small hole on under side of motor ? Normal or not


Not, sounds like a seal vent for the water pump, shouldn't leak.

Jan 07, 2010 | 2005 Honda CRF 450 R

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