Pro-Active wrote:Thank you for the reply, the old PCV was removed and put back on the fuel rail could this be the problem, will get a leak off test done
Pro-Active wrote:as mentioned before the old PRV was taken off the fuel rail and put back on due to new one being the wrong one, would this cause an issue?
Pro-Active wrote:Thanks will check, if it is dripping would this affect the running and performance of the van?
Pop the return line off the rear of the PRV, run the engine at idle, if there's any fuel coming out of the valve, it's not well.
The PRV is just a relief valve, nothing else, it's sole purpose is to protect the rest of the fuel system from over pressure damage.
marcrbarker wrote:
A true anectdote... Central heating system the pressure relief valve kept failing, replaced by CORGI
each time, baffled why it would fail because they had a history of low mains water pressure. Turned out one of the teenagers in the family would open the 'add water pressure valve' and then leave it open. Then during the night the mains water pressure would peak enough to open the relief valve, then metal rust particles circulating in the water got into the valve seat, maintaind the valve slightly open. Even after was shut the open 'fill pressure valve'. Result the slow dripping through valve got worse and worse and then valve failed.
Airthies wrote: replace the SCV (suction control valve) along with the PRV (pressure relief valve).
The reason for the PRV failing is usually caused by a failing or failed SCV
Exactly as happened in your true anecdote.marcrbarker wrote:Airthies wrote: replace the SCV (suction control valve) along with the PRV (pressure relief valve).
The reason for the PRV failing is usually caused by a failing or failed SCV
Question... what is a failed/failing SCV doing that makes the PRV fail? And what's happening to the PRV that makes it fail?
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