sholdowa Posted December 27, 2010 Share Posted December 27, 2010 I've had the pressure relief valve on a kent jam open = no pressure. Upgrade to a high capacity one? At least they're external! Quote Link to comment Share on other sites More sharing options...
peteretep Posted December 31, 2010 Author Share Posted December 31, 2010 OK I changed the oil and checked the oil pressure switch point which is .3 Bar or ~4.35 PSI. I also bought a gauge from repco and when I started the motor it showed the same results as the pressure switch had been telling me, for the first 10 seconds there is nil pressure then it builds up to ~45-50 PSI and stays there. During this period of running and checking things, the psst psst noise started so I got a video of it. I have ordered an oil pump from repco and I will try that on and see if anything changes as it appears the noise is coming from the pump. Heres a crappy video Quote Link to comment Share on other sites More sharing options...
peteretep Posted January 2, 2011 Author Share Posted January 2, 2011 I bought a new oil pump and instantly noticed this difference. I put in the new pump and the pressure rises almost instantly to ~30 PSI compared to ~50 PSI on the old pump. Now im confused as to which pump to keep as the old one is a homer built for the engine, maybe the old owner had oil pressure issues? Really I would like to use the old pump so I can return the $250 pump and get my money back, what do you chaps think? Quote Link to comment Share on other sites More sharing options...
ESKIN8R Posted January 2, 2011 Share Posted January 2, 2011 Stick with the new one, or would you rather a wrecked engine? Not worth mucking around with the old one imo Quote Link to comment Share on other sites More sharing options...
peteretep Posted January 2, 2011 Author Share Posted January 2, 2011 But the engine ran with the old pump and it's obviOusly been purposely welded, i would like to know exactly what that valve does Quote Link to comment Share on other sites More sharing options...
sholdowa Posted January 4, 2011 Share Posted January 4, 2011 http://www.vulcanengines.com/brochure/index4.htm Just get VP15. Even with postage it's surely less than $250. Quote Link to comment Share on other sites More sharing options...
peteretep Posted January 4, 2011 Author Share Posted January 4, 2011 Hmm I think I will do that I'd still love to know why that thing was welded in the first place Quote Link to comment Share on other sites More sharing options...
sholdowa Posted January 4, 2011 Share Posted January 4, 2011 I'd still love to know why that thing was welded in the first place It's the pressure relief valve isn't it?? Quote Link to comment Share on other sites More sharing options...
KKtrips Posted January 5, 2011 Share Posted January 5, 2011 I believe its in case the filter gets blocked it allows the filter to be bypassed and allows (unfiltered) oil to be pumped around the engine so your engine doesn't seize.. Quote Link to comment Share on other sites More sharing options...
peteretep Posted January 5, 2011 Author Share Posted January 5, 2011 I believe its in case the filter gets blocked it allows the filter to be bypassed and allows (unfiltered) oil to be pumped around the engine so your engine doesn't seize.. yeah I think your right, as the whole filter is pressurised then this should be the case. I still dont understand why it would be welded up also, just bought one of those high flow/high pressure pumps from burton as they were 13 GBP cheaper Quote Link to comment Share on other sites More sharing options...
sholdowa Posted January 5, 2011 Share Posted January 5, 2011 High capacity?? Quote Link to comment Share on other sites More sharing options...
peteretep Posted January 5, 2011 Author Share Posted January 5, 2011 High flow = high capacity Quote Link to comment Share on other sites More sharing options...
peteretep Posted January 11, 2011 Author Share Posted January 11, 2011 I just installed the new high capacity/ high pressure pump but it won't get any pressure. The sump and filter are both full but it doesn't even get enough to turn the light off or bring the gauge above 0. Any ideas? Quote Link to comment Share on other sites More sharing options...
fuel Posted January 11, 2011 Share Posted January 11, 2011 perhaps the pump needs to be primed? try filling it with oil before installing it. Quote Link to comment Share on other sites More sharing options...
peteretep Posted January 11, 2011 Author Share Posted January 11, 2011 I just took the pump off and filled it with oil and also filled the pressure switch point with oil, no change. When I put in the repco pump it primed in ten seconds and nothing else has changed Quote Link to comment Share on other sites More sharing options...
eke_zetec_RWD Posted January 11, 2011 Share Posted January 11, 2011 all i can think is a cracked block -cracked oil gallery. on a crossflow is there a gallery that is blanked by a bung ect? or the oil pick up is cracked and is sucking air instead of oil. Quote Link to comment Share on other sites More sharing options...
peteretep Posted January 11, 2011 Author Share Posted January 11, 2011 If I stick the old pump back in it will prime instantly, it's something to do with this new pump, I've taken the pumps off about 10 times and it's primed within 10-15 seconds every time except this 'flash' new pump Quote Link to comment Share on other sites More sharing options...
fuel Posted January 11, 2011 Share Posted January 11, 2011 I would say contact the vendor. Quote Link to comment Share on other sites More sharing options...
peteretep Posted January 11, 2011 Author Share Posted January 11, 2011 Yeah I'll call them tonight, they're in the uk though Quote Link to comment Share on other sites More sharing options...
ESKIN8R Posted January 11, 2011 Share Posted January 11, 2011 Makes you wish burtons wasnt half the world away doesnt it! Certainly sounds like the pump is at fault, pin etc holding gear to shaft all in place? Dont rip it apart otherwise they might not replace. Quote Link to comment Share on other sites More sharing options...
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