Re: [HSS] oil pump (again)

Unknown

Lewis M. Phelps wrote:

>

> OK, guys. I know I have raised similar issues before, but I can't find

> the relevant past responses in the archives.

>

> Over the weekend I dropped the oil pan and replaced all 9 quarts of

> oil, and repaired the little float that marks the oil level while I was

> at it.

>

> When I put everything back together, I couldn't get any oil pressure

> reading.

>

> I have tried priming the pump by removing the top cap and pouring in a

> half cup or so of oil. No luck. I have checked to make sure I didn't

> somehow block the intake in the oil sump. It's clear (that is, I can

> suction up oil with ease using my mouth as a suction device (phewwey!)

>

> What am I missing? This pump was working great before I did the oil

> change.

Lew, you hsould have left that until I am over there! The only way that

taking the sump off could change things is if you perhaps bent and

cracked the oil intake pump when you were re-installing the pan. Make

sure that the union at the crankcase is done up tight. Pour a quart

of oil in through the breather (on the left side of the motor, held on

by two bolts). This will allow you to run the engine for a little while

, in case the pump is not working. Take off the connection to the oil

gauge, and start the motor, letting it idle. You should have great

globs of oil coming out. Incidentally, the only way you can prime the

pump is by lifting the top ball off it's seat, afer taking off the top

cap and removing the spring and plunger. If you have no oil coming out

the oil gauge pipe, then the pump is not working, and you will have to

check that it is in fact oscillating, by taking out the pipe plug in the

end and insert a nail or something and see if it goes in and out while

you hold it in and get covered in oil in the process. If it is not

oscillating, the main spring is broken. If the oil is coming out the

connection, then the plunger must be stuck in the open position, which

would give no reading on the gauge, or the top spring is broken. It is

hard to envisage how any of this could be attributed to dropping the

sump however. Let's know how you get on. It could be that when you

prime the pump correctly you will be away. Remember that if you ever

take the pump off the engine, you must not let the bottom ball get in

the end of the piston hole, or you will have catastrophic failure.

Geoff.