What can cause oil to get into the intake? while changing my thermostat i notice that there was an excessive amount of oil in my intake system and inside my maf sensor of my 350 tpi. What can cause this?
Also I hear a tick or tapping noise....The motor isnt knocking and there isn't any anti-freeze in my oil.

 

A malfunctioning PCV system.
Excessive crankcase pressurization caused by mechanical issues.

 

install oil catch tank and your problem will be off

best regads

 

Sorry if I seem a lil stupid sir but exactly how do i do that? I thought i could have been my pcv system myself before and what about the tick noise that i hear?

 

BTW

 

Bump because I have a similar issue with hearing a ticking and oil finding its way into the plenum

 

Excessive blow by is probably part of the problem. Get yourself a new PCV valve, if it doesn't fix it you're probably coming due on an engine overhaul. A catch can is just a bandaid on a much larger problem.

 

Thanks for the quick reply drew...

After looking up whats going on I found this page What is blow-by? that really helped explain the PCV/oil in intake situation

So if I replace my PCV valve and still have issues would a compression test be the final confirmation that I'd need some kind of overhaul on the engine?

 

The PCV system on a TPI has supply air from the TB going to the rocker cover , through the crankcase and back out the PCV valve to intake. Under cruise / idle when engine vac is high it works that way removing fumes from the engine.
At WOT there is nothing to suck air out through the PCV valve ( low vac ) so engine fumes go back up the supply pipe to the TB and into intake
At WOT you have more oil stirred up in the crankcase and if you have excessive blowby pressurizing the crankcase obviously oil will end up in the intake

 

not that i want to be to smart but oil in intake/planem is normal because thats the way engine works!
heres is the picture why to use oil catch tank, now imagine there is no catch tank and what happens. i do agree if you get to much it is wrong but from what he wrote every thing is fine, if he would ger there like 1l of oli propably his piston rings are fried

pic:


best regards

 

If he's got oil inside the MAF sensor, it's excessive. A light misting of oily residue on the throttle blades, and carbon inside the plenum is normal. Enough oil that it drips when you pull the throttle body bellows is a sign of a problem.

 

So I probably need new rings cause I did an oil change and in less than a week my engine had no sign of oil on the dipstick?
What about the ticking noise? No Answer for that?

 

start saving up your pennies, you are going to need an overhaul... I had a similar problem of blowby with my formula...

 

why? My dad said it sounds like my lifters and pushrods may have failed and are causing the noise. My Motor is not knocking...I know what that sounds like as that's why I sold my last Iroc....Please be a little more detailed in your explaination...I need all the help I can get with this because its been snowing and my mobile mechanic doesn't want to come out in the cold and diagnose my problem for me!

 

Stupid question... Are you sure you put oil back in the engine after the oil change? If you're a quart low every 3000 miles it's not such a big deal. If you're burning 3 or 4 quarts in 300, there's a problem.

 

I'm not stupid...Yes I put the oil in the hole on the driver's side valve cover...been changing oil since I was 16! I agree there's a major problem...no sign oil anti-freeze in oil either

 

BTT

 

did you changed oil class or mayby oil that you bought was old or poor in quality, was previous oil very dirty ??

best regards

 

previous oil was normal dirty dark color...same as any oil i ever changed....And I used Brand New Mobile One 5W30 oil that I bought from auto. I've never heard of buying oil old? Sorry not to sound funny but that didn't make sense...I only have had the car for three months so I don't know what was used before me....From what It seems my piston rings are blown I need to do a rebuild...I think I just going to buy another motor and use this block for my 383 stroker TPI build that I wanted to since i was younger...this is my 4th Iroc btw...anyway I really am thankful for everyone. You guys have always been so helpful

 

Do a compression test.

 

I would be more inclined to do a cylinder leakdown test......

 

Thanks both you guys!

 

Total waste of $$$ putting Mobil 1 in a 20 year old engine especially that weight oil. Would have been better off with something thicker

 

A leakdown tester would be best but not everyone has access to one. That and a compressor with a regulator......
A leakdown test and a compression test combined tells you pretty much everything you could ever want to know about the "health" of an engine.

 

Ditto
As for the ticking noise mine does it as well, but mine noise is from the injectors, more pronounced now that i have 30#ers

 

it wasn't making the ticking noise before..And when I install my next engine what oil should I go with...It'll be brand new or i might just rebuild my original block.

 

The OEM recommendation for 5w-30 was primarily to improve economy. 10W-30 is a much safer and more appropriate choice for a higher mileage engine. If a compression and leakdown test indicate problems, you might even try 20W-50 as a last resort. But at this point, you're probably past the point of no return.

 

I was talking about my replacement motor....A new motor or even a rebuilt motor is not a high mileage engine....So go with 10W30 in my new engine

 

Unless you're trying to keep the Government happy, 10W-30 is probably a safer bet.

 

I'm in the Army But Yet I say **** The Government...Thanks Bro
Where's A good place to find a longblock? How much would it cost to rebuild my engine?(rough ballpark quote)
Or Should I just go with a shortblock and reuse my heads though I would still have to buy lifters,rods, rocker arms ect?
Thanks Guys...All Of you

 

Oh for all who want to see go to my page
www.myspace.com/kaymella
click on my photos and then you'll the album labeled my new camaro ie. see the black camaro not the red one that's in my sig...the one thats my avatar is the iroc we're discussing.Add me also if you can
Looks Sweet with the Targa Rear and Big Spoiler..have't seen too many like it
or for you lazy folks just go to my photo album on here and you'll see her

 

any ideas why a brand new 385 with 350 miles on it would be getting oil in the intake and blowing blue smoke? I have baffles in the valve covers.. maybe the rings arent seated yet? only been smoking the last 75 miles or so after changing to mobile1 10-30 synthetic