Melling HP Oil Pump - No Pressure
#1
Teching In
Thread Starter
Melling HP Oil Pump - No Pressure
Hey all, I have my car in the shop right now for a bunch of work, one of which is to install a new Melling HP Oil Pump and the technician is claiming that there is no oil pressure when attempting to prime the pump..
After speaking with Texas Speed and Performance, they claim to think that it's user error by the tech as these pumps are "bullet proof" and very rarely come defective off the production line..
Here is the write up from the receptionist at the shop I'm using.
" Attempted to prime the oil pump before starting, oil pressure never rose above zero. No oil is reaching the oil filter, pickup tube is sealed to the pump. Suspect a stuck open high pressure relief valve in the oil pump. Could be caused by a machining defect. Oil pump should be replaced"
Any advice or input is welcomed
After speaking with Texas Speed and Performance, they claim to think that it's user error by the tech as these pumps are "bullet proof" and very rarely come defective off the production line..
Here is the write up from the receptionist at the shop I'm using.
" Attempted to prime the oil pump before starting, oil pressure never rose above zero. No oil is reaching the oil filter, pickup tube is sealed to the pump. Suspect a stuck open high pressure relief valve in the oil pump. Could be caused by a machining defect. Oil pump should be replaced"
Any advice or input is welcomed
#2
TECH Senior Member
Sounds like pump removal is warranted so it can be inspected for a stuck relief valve.
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#14
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The hard part is trying to get the shop to try some other trouble shooting techniques suggested by the customer.. I'm in a weird spot
#15
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This is what is concerning me, that comment seems to be the going consensus among most people, even TSP was doubting what I was telling them..
The hard part is trying to get the shop to try some other trouble shooting techniques suggested by the customer.. I'm in a weird spot
The hard part is trying to get the shop to try some other trouble shooting techniques suggested by the customer.. I'm in a weird spot
#17
TECH Addict
I haven't been able to get pressure to build with a new pump, using the starter with plugs out. Or in another situation with the pickup off. Thankfully, $14 in parts from summit and a garden sprayer with some hose attaching the two I was able to prime the oil system.
Oil pressure came right up when I started it.
Oil pressure came right up when I started it.