5.3l lost oil pressure
5.3l lost oil pressure long story short had a lq9 cam only, after many years of abuse melted a piston. ran 9.10 @ 132, normally trapped 152.
swapped in a 5.3l had it running for a few weeks and on the third time to the track about 8 pass car shut off right before the stripe. got it to run about a minute noticed it only had 15psi oil pressure at idle. use to has about 45psi. shut it off then couldn't get to start found out blew the fuse to the msd. did a compression test about 125psi across all. fired it back up runs but very low oil pressure. rev it and pressure does go back up a little ways.
my question is what are some of the reasons that i would loose oil pressure? at cold idle only have about 20psi and the drops down to about 10-15 hot. i was thinking i spun a bearing or something but the engine doesn't sound bad?
swapped in a 5.3l had it running for a few weeks and on the third time to the track about 8 pass car shut off right before the stripe. got it to run about a minute noticed it only had 15psi oil pressure at idle. use to has about 45psi. shut it off then couldn't get to start found out blew the fuse to the msd. did a compression test about 125psi across all. fired it back up runs but very low oil pressure. rev it and pressure does go back up a little ways.
my question is what are some of the reasons that i would loose oil pressure? at cold idle only have about 20psi and the drops down to about 10-15 hot. i was thinking i spun a bearing or something but the engine doesn't sound bad?
well i just used a die grinder and cut the top off. there is some flakes in it and the oil also had some slightly looked like metal flake pretty sure i was right and spun a bearing.
i used 5w30 but untill after the strip was the first time the oil pressure has been that low. and started it agian today and its still low. like i said it use to be around 45 cold now its 15.
i used 5w30 but untill after the strip was the first time the oil pressure has been that low. and started it agian today and its still low. like i said it use to be around 45 cold now its 15.
well i just used a die grinder and cut the top off. there is some flakes in it and the oil also had some slightly looked like metal flake pretty sure i was right and spun a bearing.
i used 5w30 but untill after the strip was the first time the oil pressure has been that low. and started it agian today and its still low. like i said it use to be around 45 cold now its 15.
i used 5w30 but untill after the strip was the first time the oil pressure has been that low. and started it agian today and its still low. like i said it use to be around 45 cold now its 15.
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^^^
it dosn't make any noise at all. if i didn't have an oil pressure gauge i would still be running it. besides all the little shiny piece's in the oil. oil pump has probably 500 miles on it.
