pump went out again!

[neikoblu]

I don't understand why my oil pump keeps on going out. This is a brand new motor and I have been through two pumps in the 6k this motor has been on the road. I don't have a deep sump pan but I don't know if that would make a difference or not. Just for the record, 1st pump was a Ford Racing pump, 2nd pump was a Melling.

 

[Boss 351]

What oil are you running? What does the oil pump shaft look like? Maybe you should get the block taken apart, then cleaned (hot tanked) if it hasn't been done before? Do a flush at least?

 

[neikoblu]

I run a pretty thick oil. The motor is brand new. When I put it together this block was spottless. I have a hardened shaft. Maybe the oil I am running is too thick. It's Castrol Synthec 20-50.

 

[Boss 351]

I've ran with 20-50 before with stock pump and stock shaft without problems. If this is a new engine, I'd run with less thick oil though unless your engine was built a little more loose than it should be? I shouldn't talk, I'm breaking mine in with some 20w50 right now...

Check the hight of your pickup, where it sits in the oil pan, use some clay on the bottom of pan and bolt it up, then measure the clay to see if the pickup sits at the right height?

 

[neikoblu]

Sounds like a plan but I am actually looking into getting a deep sump instead

 

[Black 93 Fox]

Do you have a stock replacement pump or a high volume pump. If you have a high volume pump with a stock pan that is the problem on the top end the pump is gona suck the pan dry cause there is not enough oil down there( deep sump pan). I just went threw this with my new block last week found that out from the machine shop good thing too cause I almost put in a high volume pump.

 

[BlkSDnotch]

Stock pan and hv pump here, no probs and have 75lbs of oil pressure @ wot

 

[tjm73]

20-50 is fine. I've run it for almost 6 years. Mobil 1 non-synthetic is what I run. You just wanna be sure the oil is up to temp before you thrash on the car.

Have the pumps been disasembled and inspected for indicators of possible problems?

When you say the pump went out, what do you mean? Did it stop pumping?