I rebuilt several MGA and MGB engines over the years. One time I could not
figure out why no oil pressure. I even borrowed an oil priming device from
my machine shop. Nothing would give me oil pressure. In desperation, I
pulled the pan and took off the oil pump. I discovered that I had used an
incorrect gasket on the oil pump- several different oil pump gaskets were
provided in the gasket set and the one I used blocked one of the oil
passages. What a lesson I learned on that one!
Don Scott
At 10:36 AM 2/3/99 -0500, you wrote:
>After 15 years of good service my '66 MGBs began to show slightly
>diminished oil pressure. I decided it was time for a rebuild. I stripped
>the block sent it to a well reputed machine shop to have all the machine
>work done. I reassembled the engine with new parts and dropped it back
>in. I filled the engine and oil filter with oil. Without the ignition
>plugs installed I turned over the engine, no oil pressure at the gauge.
>I removed the hose to the oil cooler to see if oil was pumping through.
>With the hose disconnected and the engine turning over no oil came out.
>I started to think about what I could have done wrong. I thought about
>installing the new oil pump wrong but I think it only goes in one way.
>Perhaps the machine shop did not replace all the oil galley plugs. Then
>someone told me that it is easy for air to block the system and keep the
>pump from working. If this is true are there tricks for priming the
>system? Or are the other mistakes I could have made that would create
>this problem. I really need help.
>
>Thanks in advance,
>
>Graham
>
>
>
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