wr400 oil coming out of top of engine

3 replies to this topic
  • sniper695

Posted September 25, 2011 - 09:54 AM


I have a 1998 wr400 ran fine sat for about 9 months then started and ran and oil was coming out of top of engine, under tank where you can't see it. it runs fine just I haven't because i don't want to seize engine. what would be most likely reason? a gasket?

  • Sknight

Posted September 25, 2011 - 01:38 PM


Simplest thing would be if your breather hose got snatched off. How fast is the oil coming out? It's it just a leak or an actual stream?

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  • sniper695

Posted September 25, 2011 - 03:02 PM


idk, never actaully saw it while running, saw it just after parking it, it comes out covering most the block dripping to the ground. where is the tube?

  • Sknight

Posted September 25, 2011 - 07:35 PM


If it's like mine (I know the 426 engines are, not sure about the 400's.) then it's a regular black hose you'll find just behind the left radiator. It runs up to a nipple right on top of the cam cover. The hose is about 1/2" in diameter so it's hard to miss.

It sould like it'll be easy to find, just give it a good bath and fire it up then just watch for the oil to run out.


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