james28909
Newbie
cross posted on ls1tech
this is a first for me so i hope someone here knows what is going on. i recent bent a valve in my suburban and i just got it all put back together. new head gaskets, intake gaskets (felpro premium intake gaskets) etc. after trying to prime the motor with spark plugs out and fuel injector harness unplugged, i noticed that oil was coming from the tops of the rocker arms BUT it said i had zero oil pressure on the dash. so i continued to prime it and prime it, having to recharge the battery a few times and it never built pressure, but i obviously had pressure because the juices were flowing good!
so i installed spark plugs and reconnected the FI harness and put the breather assembly back on. while i was putting the breather assembly back on, i check to make sure i plugged the oil sender back in and i did remember to do it BUT the housing is slightly wobbly so i am sure this is the problem of why the dash is saying there is no oil pressure.
BUT HERE IS THE WEIRD PROBLEM
when i slightly press the oil sending unit housing/connector towards the fitting thats screwed into the engine, i hear this hissing sound. i cannot understand what could be making a hissing sound ONLY when i press/wiggle the housing. it sounds as if water is spewing out and sure enough there is droplets of water running along with the oil to the oil returns on the head (i still have the valve covers off) and i can see it pretty clearly that a few drops of water are running along with the oil while it is running.
my question is, is there somehow that water can infiltrate the oil sending unit? if it was a leaking intake gasket wouldnt it make the hissing noise from intake area all the time and not just when i press/wiggle to oil sending unit? i torqued the intake down to 8 ft lbs then 10 ft lbs then 12 ft lbs per the spec i pulled up, then found another one that said 40 ft lbs so i may go back and tighten them more.
when i open the throttle body, i can hear the hissing a little better but do not see anything spraying or no steam or anything. so i think the noise is coming from an intake gasket, but why would it only make that noise when i wiggle the oil sending unit housing?
if anybody has any idea what it could be, please let me know because i am lost and cannot find anything on google. if i need to supply any more information please let me know. i have not ran the engine since i seen the water running with the oil at the bottom of the head/valve cover area. thanks in advance
EDIT: for clarification, i originally noticed the hissing sound after i ran the motor to temp the first time and then removed breather assembly to make sure oil sender was hooked up because i didnt have any pressure on the dash. its like once pressure built up in the cooling system, and after i turn the engine off, i wiggle the oil sender unit on the back of the motor behind the intake and when i wiggle it to a certain spot i hear this hissing/sprewing/spraying sound from the intake area and i have water in the oil
this is a first for me so i hope someone here knows what is going on. i recent bent a valve in my suburban and i just got it all put back together. new head gaskets, intake gaskets (felpro premium intake gaskets) etc. after trying to prime the motor with spark plugs out and fuel injector harness unplugged, i noticed that oil was coming from the tops of the rocker arms BUT it said i had zero oil pressure on the dash. so i continued to prime it and prime it, having to recharge the battery a few times and it never built pressure, but i obviously had pressure because the juices were flowing good!
so i installed spark plugs and reconnected the FI harness and put the breather assembly back on. while i was putting the breather assembly back on, i check to make sure i plugged the oil sender back in and i did remember to do it BUT the housing is slightly wobbly so i am sure this is the problem of why the dash is saying there is no oil pressure.
BUT HERE IS THE WEIRD PROBLEM
when i slightly press the oil sending unit housing/connector towards the fitting thats screwed into the engine, i hear this hissing sound. i cannot understand what could be making a hissing sound ONLY when i press/wiggle the housing. it sounds as if water is spewing out and sure enough there is droplets of water running along with the oil to the oil returns on the head (i still have the valve covers off) and i can see it pretty clearly that a few drops of water are running along with the oil while it is running.
my question is, is there somehow that water can infiltrate the oil sending unit? if it was a leaking intake gasket wouldnt it make the hissing noise from intake area all the time and not just when i press/wiggle to oil sending unit? i torqued the intake down to 8 ft lbs then 10 ft lbs then 12 ft lbs per the spec i pulled up, then found another one that said 40 ft lbs so i may go back and tighten them more.
when i open the throttle body, i can hear the hissing a little better but do not see anything spraying or no steam or anything. so i think the noise is coming from an intake gasket, but why would it only make that noise when i wiggle the oil sending unit housing?
if anybody has any idea what it could be, please let me know because i am lost and cannot find anything on google. if i need to supply any more information please let me know. i have not ran the engine since i seen the water running with the oil at the bottom of the head/valve cover area. thanks in advance
EDIT: for clarification, i originally noticed the hissing sound after i ran the motor to temp the first time and then removed breather assembly to make sure oil sender was hooked up because i didnt have any pressure on the dash. its like once pressure built up in the cooling system, and after i turn the engine off, i wiggle the oil sender unit on the back of the motor behind the intake and when i wiggle it to a certain spot i hear this hissing/sprewing/spraying sound from the intake area and i have water in the oil
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