We put a new oil pump in the car, and it still wont pump oil. We primed it with grease before we put it in, and the rod from the oil pump to up in the motor seemed fine. We put the oil pump in oil and checked it out before we put it in the car and it pumped fine, so can you tell me what else to do. We have done put it back togeather, so can you help?
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Re: OIL PUMP PROBLEMS
The oil pump is not electronic it is gear drivin . either the gear is bad or the installation was done incorrect. my advice is to start over and sure the rod is seated correctly . you should be able to put the rod in and not be able to spin it. if it spins that means either the gear is completely bad or the rod needs replacing or both. in order to replace the gear you have to remove the timing chain. in your vehicle if you have a distributor and not coil packs you have to remove the distributor and look at the bott of the shaft to see if it is worn out. hope this helps........please rate this.
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If it has not started knocking I would pull the pan and replace the Oil Pump as the one you put in may be faulty. Did you prime the oil pump before cranking it over? Are you sure the Pick up tube is clear of obstruction? Also check the Oil Pump drive. I take it that is it not leaking oil when turning over. If it is you have a missing oil plug.
Did you prime the new pump with some engine oil? Another trick is to use some light grease to coat the pump gears so they will seal against themselves. If you primed the pump and are sure the pump is working, you may have worn out engine bearings or some internal oil leak that is keeping the oil from getting pressure.
it's not priming.
that grease trick helps.
is this some china pump off fleabay or a real jeep pump..???
did you do the below.:
1: the grease sure. and then prime the filter and the gallery behind the
2: With fuel and spark defeated, and spark plugs removed then with pressure gauge attached to sender port, did you crank it to get max pressure (my guess is this is the step you are posting on.)
i never start any engine, (after majors) unless i get #2 to work first the number 3, which is top end oil checks.
the pump is no priming.
In pro shops they make up a priming tool. so new engines are never
started, 1st time dry, ever.
one way is just a tank full of oil and shop air, and 2 valve.
maybe the new pumps relieve valve is stuck open, fully.
i rebuild my own classic engines, after all that work !!! i never
ever, skip these steps.
and for 100% sure, good pressure, and top end oiling on any major work.
one of the top brand pump makers. VIDEO
New oil pumps will not work until they are primed . Pull the pump and remove the gears cover Fill the space around the gears with Vaseline / grease and replace the cover/pump. When the engine starts to spin the gears will move the Vaseline out into the oil galleys and create a vacuum which will suck up the oil. The Vaseline/ grease will disperse back into the sump with no ill effects. Ensure the oil pick up pipe is securely in place.
You don't give the year and model, and I'm sure its not a Cutlass Ciera if it has a 231. Usually its a good idea to pack the gears with grease or vaseline to help prime the pump. Since the pump is mounted on the outside of the engine it can be very difficult to get oil from the sump into the pump gears for the first time.
The problem sounds like you did not prime the oil pump before you finished putting everything together. Turn the engine over to were the rotor on distributor is at #1 to fire. Mark the location of distributor base to intake manifold. Pull the distributor out of the intake. With a small pin light look inside the hole and insert a long screw driver into the distributor extensin shaft or use a homemade allenhead wrench welded to a extension rod to turn the pump extension rod. Turn the pump several times until it starts to get hard and the pump will be primed. Turn the distributor extension clockwise to prime pump. Hope this will help you.