metal in oil and now other things Options

[blckcelica95]

so i need some help on this one today my girlfriend was driving my celica, it ran fine all day until she stopped and shut the car off for 15 minutes , she gets back in and the car wont start, just cranks over. after about five minutes bam the car starts and runs fine. She get its back here and i take a look at it . its running fine no knock. purring like it always does. so i shut it off, and guess what happened 20 minutes later . wont start . so i wait about a minute try again and it starts up. so i pop the hood and start looking around to see what going on. I found that the spark plug wires had **** the bed so changed them. then i decided to change the oil. and i found metal particles in the oil.
Could these to things be related and what could be the metal in the oil. keep in mind the cars oil pressure never drops below 25 psi when running, it has no knock what so ever. and it idle at round 5-700 rpm.
it sounds to me like im chewing up a rod bearing, or main bearing, but it dosent show any other symptoms but these .
Sean

This post has been edited by blckcelica95: Mar 17, 2008 - 8:42 PM

[97GTinKC]

If it has only 4000 miles since re-build, I'd consider it completely normal wear particles, change it and check again in a couple thousand miles.

As for oil pressure, 80 seems high to me, you might see that when it's really cold on 1st start-up, Or you are using too heavy weight oil. either way sounds like you are activating the hi-pressure relief valve. Keep in mind; oil pressure is a measurement of RESISTANCE to flow. You could possibly be causing some of the wear particles because your oil is too thick and takes too long to get circulating well in the mornings. most engine wear happens on start-up. IIRC they call for a 5W30? Unless you set it up for extra clearance during the rebuild, If you are running a 20w50 or even a 10w40, you may be hurting more than helping. Which is why I am now running Amsoil's series 2000 0W30 synthetic along with good filters. It puts the oil light out immediately, even in cold weather. I have also noticed in the past some of the cheaper filters dont seem to have working anti-drainback valves, If it takes more than a second or 2 to turn off the oil light or move the gauge, try changing filter brands. JMHO