Joshy88 Posted May 21, 2014 Report Share Posted May 21, 2014 Hi all I've got a zd30 with a leaking vacuum pump I changed the o ring in it an it still leaking any body got any Ideas as to why.? Link to comment Share on other sites More sharing options...
Wags83 Posted May 26, 2014 Report Share Posted May 26, 2014 Hi Josh, Have u checked the vacuum lines aren't ruptured? Also have u checked it holds pressure after the car is off? You should get up around 25psi or so. Possibly have to check with a vacuum gauge. Link to comment Share on other sites More sharing options...
Warwick Posted December 23, 2020 Report Share Posted December 23, 2020 So if it doesn't hold vaccum can I assume it will make the pump leak? Link to comment Share on other sites More sharing options...
Rumcajs Posted December 27, 2020 Report Share Posted December 27, 2020 Nope that is incorrect. Very common problem is small vac line in to turbocharger is split. The result is car feels sluggis as turbocharger can't alter its vanes at low RPM so no boost. Another quite common issue is on series 3,2,1 (up to mid 2004 models), they have vac canister which leaks like a sieve. It can be easily by passed to check or confirm and left disconnected with no adverse effects. Regards Link to comment Share on other sites More sharing options...
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