B230F Crankcase Pressure (Flame Trap)

Hi,
I’ve recently bought a bunch of parts for my B230F:
- New oil cap seal (old one was hard and leaking)
- New PCV/Flame trap breather thing
- New timing belt kit & Covers
- Tensioners and water pump
I completed the easiest job first but may have created more problems… I replaced the oil cap seal but since doing this I now see a couple of oil drops on the ground. Now I fear I may have allowed too much pressure to build up in the engine and have a blown a rear main seal or similar? These oil drops weren’t there before replacing the cap seal.
This week I plan to fit a new breather but how do I test the old one to make sure it was breathing correctly and wasn’t totally blocked? Just blow through it or? I’m not sure if this was ever replaced or when it was done last.
Thanks,
Martin
I’ve recently bought a bunch of parts for my B230F:
- New oil cap seal (old one was hard and leaking)
- New PCV/Flame trap breather thing
- New timing belt kit & Covers
- Tensioners and water pump
I completed the easiest job first but may have created more problems… I replaced the oil cap seal but since doing this I now see a couple of oil drops on the ground. Now I fear I may have allowed too much pressure to build up in the engine and have a blown a rear main seal or similar? These oil drops weren’t there before replacing the cap seal.
This week I plan to fit a new breather but how do I test the old one to make sure it was breathing correctly and wasn’t totally blocked? Just blow through it or? I’m not sure if this was ever replaced or when it was done last.
Thanks,
Martin
Comments
Oil drops don't necessarily mean a seal has blown. Replacing the PCV and flame trap and ensuring it's all free of blockages may be all you need to do to fix it, but it's impossible to say for sure until you do.
The parts you're talking about are so cheap that you don't really need to bother worrying about checking if they are blocked (chances are they are anyway) so I would just replace the whole lot and enjoy an engine that can breathe and not push oil out of every orifice
I've removed mine and they had crud inside but still breathable. I'd prefer new hoses though to be honest. Flame trap is ok.
Where to get them is up to you - dealer, fcpeuro, IPD, wherever
PS: Buy a new flame trap (they're cheap)
@morch_66479 the main reason for using the OE hoses is the weird bends they have, if you can route generic hose go nuts. Beware the little S-shaped hose that runs between the flame trap and the PCV, every aftermarket one I've bought has instantly split in half.
Don't do that; that's bodgy.
But hey, it's not my car
Mackay hoses are just heater hoses and may not work well with oil/exhaust gases?
Engine is breathing like an athlete now!!