G
Guest
Guest
Hello all and welcome back Julian,
I have been having low oil pressure recently cannot say when it happened but
believe it could have been whilst driving through a muddy/watery area.
At first when cold the engine pressure on the gauge is reading about half
way but drop's 1/3 mark(maybe is half?). When fully warm its just above the
'L' Mark.
I have dropped the sump and examined the Big ends which were looking poor so
i have replaced them, I have also checked a couple of the mains when I was
there and they look ok.
So fired it back up (after putting oil in J) and pressure was still the
same, hooked up a pressure gauge to it and it reads 25psi when cold @idle
and 5 psi when fully warm, when warm it will rev around to 3000rpm no probs
and the pressure reads 37 psi.
The manufacture's specs are above 4.3psi idle and 18-42 psi @ 3000 revs, so
it would appear the engine is in spec according to the manufacture manual.
I replaced the sender gauge to no avail, still yet to check the oil pump and
relief valve.
My question is? Has anyone seen anything like this before? Is it the oil
pump before i pull it apart? Am i in specs with manufacture and just a
faulty dash meter?
The vehicle is a Land Cruiser II KZJ70 with a 1KZT engine, 3.0 diesel.
Thanks
Martin.
I have been having low oil pressure recently cannot say when it happened but
believe it could have been whilst driving through a muddy/watery area.
At first when cold the engine pressure on the gauge is reading about half
way but drop's 1/3 mark(maybe is half?). When fully warm its just above the
'L' Mark.
I have dropped the sump and examined the Big ends which were looking poor so
i have replaced them, I have also checked a couple of the mains when I was
there and they look ok.
So fired it back up (after putting oil in J) and pressure was still the
same, hooked up a pressure gauge to it and it reads 25psi when cold @idle
and 5 psi when fully warm, when warm it will rev around to 3000rpm no probs
and the pressure reads 37 psi.
The manufacture's specs are above 4.3psi idle and 18-42 psi @ 3000 revs, so
it would appear the engine is in spec according to the manufacture manual.
I replaced the sender gauge to no avail, still yet to check the oil pump and
relief valve.
My question is? Has anyone seen anything like this before? Is it the oil
pump before i pull it apart? Am i in specs with manufacture and just a
faulty dash meter?
The vehicle is a Land Cruiser II KZJ70 with a 1KZT engine, 3.0 diesel.
Thanks
Martin.