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

[6G96GT]

Usually if it's rod bearing particles, it would be a pasty swirl in the oil and not hard tiny particles. The rod bearing metal is a babbitt metal that quickly pastes up in an engine. Sometimes there's residue in the oil pan and sometimes there is not. I would watch the oil pressure guage like a hawk though and if it starts to run low and the engine fights to stay on at idle then turn it off and DONT try to start it again...tow it before you blow the engine cause that's definitely rod bearing or bearings even.



I used to run synth. oil (and I can easily afford it, thanks) but I don't anymore...it was explained to me that first, we aren't running nascars here and second, it just allows more crap to stay in the synth. oil longer because there's more mileage between oil changes. Just get the regular oil like Castrol GTX and change faithfully every 3K.

another thing, only 4k into a fresh engine you will have more metal in the oil because the rings are still seating into the bores, it wont be truely worn in for about another 6000 miles. yes, it really takes an engine THAT long to wear in completely. after the initial 10 to 15 thousand miles wear levels off, until then its sill seating things and wearing things into place.

I would have to say the most "crucial" term for engine break-in is the first 20 miles of driving at different speeds because that's when the rings make their first chicken scratches on the cyl-walls and make the guidelines for the rest thereafter.