Tiger Super Six
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| posted on 29/3/10 at 03:12 PM |
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Crank Case breather leaking
Chaps,
The crank case breather on my pinto is leaking oil which then runs down the sump and onto the garage floor!!
I think it should be a push fit but if it is, how do I stop it leaking?
Cheers,
Mark.
Mark
Tiger Avon
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nick205
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| posted on 29/3/10 at 03:20 PM |
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What is the complete set-up - carb/injection, breather pipework, catch tank etc.
There should be a small metal can (flame trap) which is a tight push fit into the block. Then (as standard) there's a PCV valve that fits in a
rubber grommet in the top of the can.
If you're using the original PCV (positive crankcase ventilation) valve, this nees a vacuum from the inlet manifold to open the spring loaded
plunger otherwise it will build pressure in the block and oil will force it's way out somewhere.
Give us the full set-up and we can diagnose.
Hope I'm not teaching to suck eggs here BTW 
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02GF74
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| posted on 29/3/10 at 03:22 PM |
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quote:
Originally posted by Tiger Super Six
Chaps,
I have a pushfit breather in my crossflow -the rubber hardens over age and was a little bit loose - remedied by a piece of bicycle inner tube.
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jacko
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| posted on 29/3/10 at 03:23 PM |
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Have you removed the one way valve ? is the pipe going to a catch tank ?
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Tiger Super Six
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| posted on 29/3/10 at 04:06 PM |
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quote:
Originally posted by nick205
What is the complete set-up - carb/injection, breather pipework, catch tank etc.
There should be a small metal can (flame trap) which is a tight push fit into the block. Then (as standard) there's a PCV valve that fits in a
rubber grommet in the top of the can.
If you're using the original PCV (positive crankcase ventilation) valve, this nees a vacuum from the inlet manifold to open the spring loaded
plunger otherwise it will build pressure in the block and oil will force it's way out somewhere.
Give us the full set-up and we can diagnose.
Hope I'm not teaching to suck eggs here BTW
I have carbs and the breather goes into a catch tank.
I have something pushed into the block (vertical) and then a cylinder that has an outlet at 90 degrees (so now running paralel to the ground) which
the pipe then joins onto to go into the catch tank.
Cheers,
Mark.
Mark
Tiger Avon
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nick205
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| posted on 29/3/10 at 04:24 PM |
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Any chance of a photo?
Sounds like you might have one of these fitted into the original metal can flame trap.
If so, then O2GF74's comment above on the rubber grommet are worth following up. IIRC the grommet costs about £1 from Ford and is worth
replacing anyway.
Is the catch tank hose secured with a hose clip onto the outlet? Any oil running back down the pipe after use might be finding its way out at the
joint.
[Edited on 29/3/10 by nick205]
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Tiger Super Six
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| posted on 29/3/10 at 04:39 PM |
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I will try to take a picture tonight but it's pretty buried under the carbs and engine mount!
The pipe is held on with a jubilee clip, but on my old car (also a pinto) I did have to remove the spring and ball bearing (is this a different set up
to the pic above?).
I went into Fords at lunch to try and buy a replacement but they said they don't make them anymore - helpful!
Mark.
Mark
Tiger Avon
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Tiger Super Six
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| posted on 29/3/10 at 04:40 PM |
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quote:
Originally posted by 02GF74
quote:
Originally posted by Tiger Super Six
Chaps,
I have a pushfit breather in my crossflow -the rubber hardens over age and was a little bit loose - remedied by a piece of bicycle inner tube.
Could you use PTFE (the white plumbing stuff) instead?
Mark
Tiger Avon
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Tiger Super Six
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| posted on 29/3/10 at 09:22 PM |
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Took another look tonight and the pipe going onto the breather from the catch tank appeared a little loose.
I have tightened it up so fingers crossed that will sort the slight leak.
Mark.
Mark
Tiger Avon
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