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350matt
350matt, Mechanical Engineer
Category: Peugeot
Satisfied Customers: 22160
Experience:  BEng Hons, worked in the car industry for last 22 years
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A 2.0 hdi has off the oil filler cap so l assume a breather

Resolved Question:

Hi ,a 2.0 hdi has blown off the oil filler cap so l assume a breather problem, is there a one way valve or similar causing the issue.thanks
Assistant: When was your last oil change?
Customer: Not sure due to purchase but oil etc already purchased
Assistant: What is the model/year of your Peugeot?
Customer: It is a 2002 307 2.0hdi
Assistant: Are you fixing your 307 yourself? What have you tried so far?
Customer: Yes I am fairly competent and have done some quick checks
Assistant: Anything else you want the mechanic to know before I connect you?
Customer: Not really I think that's sufficient thanks
Submitted: 4 months ago.
Category: Peugeot
Expert:  Nicola-mod replied 4 months ago.
Hello,
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I wonder whether you're ok with continuing to wait for an answer. If you are, please let me know and I will continue my search. If not, feel free to let me know and I will cancel this question for you.
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Nicola
Expert:  350matt replied 4 months ago.

Hello

The first thing I'd check is the crankcase pressure relief valve (PCV) these are sprung loaded and are only meant to 'burp' excess pressure every now and then. The exiting gas is piped back to the inlet, however should the valve stick open then the engine tends to suck the air out of the crankcase all the time and this carries oil over with it.

If you remove the air intake pipe and look inside where the crankcase breather is plumbed in you may find evidence of oil.

If you do find oil replace the valve

350matt, Mechanical Engineer
Category: Peugeot
Satisfied Customers: 22160
Experience: BEng Hons, worked in the car industry for last 22 years
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