1llustriou5
New Member
- Joined
- Jan 5, 2022
- Messages
- 1
- Reaction score
- 0
- Points
- 1
- Age
- 25
- Location
- Adelaide
- Members Ride
- VX Calais S2 5.7 LS1
Hi guys, have a VX 5.7L LS1
Firstly to give some background on the situation the car has had work done, including a cam, ls7 lifters, rods etc. along with transmission work.
Car drove fine for months and was very happy, one day out of the blue the oil pressure light came up on the dash while i was sitting at a light, revved it, oil light off, sit for another 2 seconds oil light back on. Installed a guage so i could read what exactly was going on and basically car was losing pressure after it was warm on idle.
Figured it could be Oil pump or o ring or something within that vicinity. So off comes the sump and timing cover to check out whats going on. Oil pump looked to be fine, oil and pan was clean, not a piece of metal shaving to be seen, o ring isn't pinched, barbells were in place. Figured it was possibly a fault in the oil pump even though it all checked out. Swapped the melling 10295 out for another melling 10295.
Put the car all back together, still the same problem is occurring. Cold idle pressure sits at 15-20psi, after it warms up drops down to 10psi and hovers in-between 5-10psi on idle @ operating temp. On load car is hitting good pressures around 50-60psi.
Currently running a semi-synthetic 10w-40 oil.
Spoke with my mechanic and he says the only thing he sees possible for this behaviour and knowing what we know is that the lifters are bleeding off.
Car also doesn't tick or tap.
I just want to ask for more opinions, similar experiences and what options i can take to confirm the issue.
Once again it is not the o ring, it is not the pump, it is not the barbells, and more than likely not the cam bearings...
Thanks guys any help would be greatly appreciated.
Firstly to give some background on the situation the car has had work done, including a cam, ls7 lifters, rods etc. along with transmission work.
Car drove fine for months and was very happy, one day out of the blue the oil pressure light came up on the dash while i was sitting at a light, revved it, oil light off, sit for another 2 seconds oil light back on. Installed a guage so i could read what exactly was going on and basically car was losing pressure after it was warm on idle.
Figured it could be Oil pump or o ring or something within that vicinity. So off comes the sump and timing cover to check out whats going on. Oil pump looked to be fine, oil and pan was clean, not a piece of metal shaving to be seen, o ring isn't pinched, barbells were in place. Figured it was possibly a fault in the oil pump even though it all checked out. Swapped the melling 10295 out for another melling 10295.
Put the car all back together, still the same problem is occurring. Cold idle pressure sits at 15-20psi, after it warms up drops down to 10psi and hovers in-between 5-10psi on idle @ operating temp. On load car is hitting good pressures around 50-60psi.
Currently running a semi-synthetic 10w-40 oil.
Spoke with my mechanic and he says the only thing he sees possible for this behaviour and knowing what we know is that the lifters are bleeding off.
Car also doesn't tick or tap.
I just want to ask for more opinions, similar experiences and what options i can take to confirm the issue.
Once again it is not the o ring, it is not the pump, it is not the barbells, and more than likely not the cam bearings...
Thanks guys any help would be greatly appreciated.