That is a strange one, i don’t remember ever having an issue with the oil priming on a CVH. Apart from oiling all the bearings etc when assembling the engine, all i used to do was half fill the oil filter with oil and that was it .
When cranking did you have the plugs out so it spins over faster ? Jim From: [email protected] Sent: Tuesday, June 17, 2025 10:00 PM To: Quantum Owners Group Subject: [Quantum Owners] Oil Pump Priming - CVH engine I am having a problem getting any oil pump flow/pressure on cvh engine after it has been sitting unused fo ages although turned over occasionally. I assumed pump ihas dried out so have been attemting to get it primed again but without success. Before lay up engine had no oil presuure problem. I have tried various methods including:- Overfilling sump Filling filter Pumping oil in via oil pressure switch port Pushiing some Wynns/STP thick oil treatment into pressure relief valve port Prolonged cranking of engine using multiple batteries Starting engine and running for max 30 secs So far have not got any indication of oil being sucked up and pumped - no pressure indication on switch or gauge and no oil comming out of switch port. The pressure relief valve has been removed/checked/cleaned several times - it was not stuck in open position. The pump pickup is clean - I know as ichecked when I fitted new sump. Anyone got any other ideas? I want to avoid having to change pump (drop engine job) if possible - especially as I know the pump was working fine before lay up. Thanks John -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). --- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/quantumowners/b3ccf745-2f05-488f-9c8b-ac2621e8c80bn%40googlegroups.com. -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). --- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/quantumowners/546B8698D5424F26A81DE085B98DC0E5%40JimQuad.
