The Stovebolt Site Forums The Shop Area Engine Shop noisy lifters

i just purchaced a rebuilt 235 from my local machine shop and got everything installed got it running and the lifters were quite noisy. after i ran it for awhile the noise went away. the next day i started it up and its real noisy again sounds like a diesel. i did prime the oil pump before i first started it. does it matter which way i hooked up the oil lines to the oil filter? could i have a bad oil pump? one way of checking is to take the top of the oil filter off, right? there is no oil pressure guage. thanks

Hopefully someone will chime in and correct me if I am wrong.

The reason you liftera are noisy on a cold start is because the oil has "leaked" down and after running for a minute it builds the oil preassure back up in the lifter galleries. Then they quiet right down. This is pretty normal for hydralic lifter engines. Mine does it on the first start of the day and after sitting for a few hours.

tomc9770,

You haven't told us if these are hydraulic lifters or solid lifters. It would be more common for them to be solid. Solid lifters that are set loose will clatter until the engine warms up and the clearances diminsh which will quiet the clicking. What does the machine shop say?

My WAG is they are solids that were set when the engine was on the stand and they need to be adjusted now that everything has run awhile and seated.

Stuart

The plug in back of the exhaust is the pressure side. It should be hooked up to the side inlet of the oil filter. There should be a T on that outlet & a line going to the oil gauge. The bottom of the filter drains into the pan from the opening down low in front of the exhaust pipe.