Oil loss or burning problem
Gary
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I dunno, every engine i've ever worked on has had some degree of oil residue inside the manifold. I'd say it would be very hard to pull the intake apart on an engine with 100K miles and not see that orange/brown residue on some of the internal surfaces.
I've pulled the manifold off my Mustang plenty of times for various installs (cams/heads/rockers/etc) and each time observe the the nasty stuff...and the engine uses really no oil between changes.....at least not a measureable amount.
WHile i agree with reducing it as much as possible, i don't think it can ever be 100% eliminated.....or maybe it can.
Either way, i'm due an oil change soon so i want to assume the catch bottle and install before the change and see if it makes a difference along with new PCV
I've pulled the manifold off my Mustang plenty of times for various installs (cams/heads/rockers/etc) and each time observe the the nasty stuff...and the engine uses really no oil between changes.....at least not a measureable amount.
WHile i agree with reducing it as much as possible, i don't think it can ever be 100% eliminated.....or maybe it can.
Either way, i'm due an oil change soon so i want to assume the catch bottle and install before the change and see if it makes a difference along with new PCV
Thread Starter
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Thanks for all the replies!
The car has only 80,000 miles on it - and up until recently it didn't leak or consume a noticeable amount of oil.
I'm going to get under the car and check for the leak later this week. I'll also check out the PCV valve and intake. Hopefully the problem is small and simple.
The car has only 80,000 miles on it - and up until recently it didn't leak or consume a noticeable amount of oil.
I'm going to get under the car and check for the leak later this week. I'll also check out the PCV valve and intake. Hopefully the problem is small and simple.
Mine was burning oil since 50K miles. Not enough at the time to warranty a warranty replacement unfortunately.
I have a 153K miles on it now, so can't really complain too much.
I have a 153K miles on it now, so can't really complain too much.
They just get clogged and sticky from oil residue. With some elbow grease, you can clean up the original to the point where it's no different from buying a new one. Only real reason to replace it is physical damage.
After you clean it you can easily test it by blowing on it. You can suck air through, but if you try to blow it should lock up.
I bought a new one just because I had placed a large order for parts through Rockauto and decided to just pick up a new one.
But so far, i have noticed a reduction in oil consumption. No other changes other than PCV. Don't get me wrong though...i still use oil.
After you clean it you can easily test it by blowing on it. You can suck air through, but if you try to blow it should lock up.
I bought a new one just because I had placed a large order for parts through Rockauto and decided to just pick up a new one.
But so far, i have noticed a reduction in oil consumption. No other changes other than PCV. Don't get me wrong though...i still use oil.
$21 with a gasket at your local Infiniti parts dealership! Checked today... When I went there to get TPMS stuff.
Or $5 off rockauto.com
Normally i go OEM with my replacement parts, but how can you **** up a PCV valve?
I dunno, every engine i've ever worked on has had some degree of oil residue inside the manifold. I'd say it would be very hard to pull the intake apart on an engine with 100K miles and not see that orange/brown residue on some of the internal surfaces.
I've pulled the manifold off my Mustang plenty of times for various installs (cams/heads/rockers/etc) and each time observe the the nasty stuff...and the engine uses really no oil between changes.....at least not a measureable amount.
WHile i agree with reducing it as much as possible, i don't think it can ever be 100% eliminated.....or maybe it can.
Either way, i'm due an oil change soon so i want to assume the catch bottle and install before the change and see if it makes a difference along with new PCV
I've pulled the manifold off my Mustang plenty of times for various installs (cams/heads/rockers/etc) and each time observe the the nasty stuff...and the engine uses really no oil between changes.....at least not a measureable amount.
WHile i agree with reducing it as much as possible, i don't think it can ever be 100% eliminated.....or maybe it can.
Either way, i'm due an oil change soon so i want to assume the catch bottle and install before the change and see if it makes a difference along with new PCV
Maybe it is related to climate.
Techincally on a modern EFI engine the entire system should be sealed due to emmissions regs. The only air intake should be through the MAF, and the only exhaust should be out the tailpipe.
Before fuel injection, venting to atmosphere was common, but with emmissions regs, that was put to an end.
Also, when it comes to forced induction, you don't want any vents to atmosphere as you want the exact amount of air to be metered by the MAF to lessen the risk of running lean and such when unmetered air enters the system. Of course this all depends on design of the PCV system and the various vac lines and such.
Before fuel injection, venting to atmosphere was common, but with emmissions regs, that was put to an end.
Also, when it comes to forced induction, you don't want any vents to atmosphere as you want the exact amount of air to be metered by the MAF to lessen the risk of running lean and such when unmetered air enters the system. Of course this all depends on design of the PCV system and the various vac lines and such.