oil from valve cover gasket?

[chewrawka4g63]

ok so did some work on my sparkplugs and got then all gapped @ .28, then i left that plastic cover w/o the screws. went to autozone for some stuff when igot back i took this pic. Do u guys think its the vc gasket, pcv, or dipstick? i boosted a lil bit but nothing crazy. just had motor and tranny rebuilt about 5 months ago, so.........? what do u guys think?

 

[Silver99OZ]

Most likely leaking from the oil cap.

 

[LiquidX]

Check for the rubber seal under the oil cap. Most likely it's now a hard "plastic". If so, get a new rubber seal and make sure the cap is tight.

 

[codeofdastreets]

Also check the valve cover for hairline cracks, I"ve seen people over tight the screws and crack the cover without even noticing it, but chances are your problem is the oil cap seal..

 

[deweese46]

yes its the rubber seal mine did that though the valve cover cracked took it off look it over and replace the cover and gasket still leaked.Bought a new oil cap with the seal never did it agine.

 

[chewrawka4g63]

since most r suggesting the oil cap, ill Di that first. u guys think the autozone brand should do? car runs strong now that i replaced my old ebay big 16g with a real mhi small 16g.

 

[Absit]

No, many won't fit properly. Take the part number to a local Mitsu dealership or order one online.

 

[NOREMORSE93]

Thought it was my oil cap too and it turned out to be my valve cover :/, put the new oil cap on and clean the oil off of valve cover, if the oil comes back, its probably the valve cover.

 

[YanDsm]

My car do the same, it's certainly excessive crankcase pressure. Check your pcv valve, buy another oil cap rubber if it's more like plastic than rubber. You can also do a leakdown test even if it's freshly rebuild. If everithing is fine I think it's time for an oil catch can, maybe dual inlet from valve cover to help relief crankcase pressure. That's what I'll do on mine in the next days.

 

[TurBoneRed]

I replaced my V/C gasket yesterday and the same thing happend after a bit of hard driving, only not as much.

 

[YanDsm]

trust me, dual inlet oil catch can !

 

[deweese46]

Ya i would get an oem one so you know its right

 

[TurBoneRed]

I heard a crack after installing one of my bolts man this sucks, JB Weld ftw.

 

[chewrawka4g63]

thanx for the replies everyone! together we resolve this nonsense. i love this car.

 

[JuGs]

I just got done fixing this exact same issue. first it was my VC cracked to hell. Then my new VC gasket, after that oil cap seal broke. I got new oil cap and still didnt fix it. I had to order a OEM oil cap gasket and pcv valve and so far its all good. I have 2 gaskets on the cap too

 

[Xeiros]

Mine looks the same. It's either the VC gaskets (around the spark plugs) or the oil cap (most likely). Do yourself a favor if it's got any semblance of high mileage on it and replace them both. Costs around $50 to do it, and you'll have peace of mind with it so long as you seal the new gaskets properly with some RTV.

 

[JuGs]

A pcv valve is 8 bucks off dsm grave yard. Its a oem and it worked for me. I would replace all 3 and if it still happens then you have a issue with your rings. Also check very carefully for any cracks in the VC it self.

 

[chewrawka4g63]

yea so ilooked real close at all the mounting bolts, and sure enough, the ones closest to the cam gears had a crack, actually two. luckily my bro in law has an extra VC and gasket. also gives me a chance to check the pcv valve. also my oil cap didn't have a rubber gasket at all! so it was probably leaking there too under boost. im gonna swap vc's in an hour or so. ill post my findings.easy fix...

 

[roberts99]

couldnbe the oil cap or the valve cover/vlave cover gasket.

*could be

*valve

 

[Shadowscreed]

I know it's a little off topic but I noticed you were talking about a 16G turbo you bought off eBay, if you're buying parts here and there as replacement then eBay is the way to go, but if you plan on doing a build, I wouldn't suggest buying through eBay, although either way you should be cautious, the safest bet is to buy from Top Rated Sellers. I've never had issues with eBay but I've known plenty of people who have had issues.

Also a PCV valve from any auto parts store is acceptable, I installed one on a 97 Talon that had a hose and bolt plug rigged in place, never had an issue with the PCV after that and that car has been through hell for almost a year since I installed it.

 

[19BLACKGST98]

Mines done it before just because I needed the VC gaskets changed. Congrants on figuring the problem out though.

 

[zyphermonkey]

Mine does the same thing. I've replaced my 'plastic' oil cap gasket and it's still happening.

Looks like it's time to check for valve cover cracks.

 

[chewrawka4g63]

ok so after a day of driving with the new valvecover, NO LEAKS! can boost worry free. i checked pcv valve so that was good. plus put a oil cap gasket. put silicon on vc gasket & sparkplug gasket. my brother in law had an extra vc that was rewelded, plus I'm liking the RED. TESTA ROSA style. next in line is going over all vacuum lines. what yall think?

 

[GST_IceTea]

my valve cover looks just like the one in the pictures above. how can it be the oil cap if oil is puddling aroud the inside of the valve cover near the spark plugs? has anyon had a problem with the mobil one evo oil caps from stm?

 

[agentorange313]

It can puddle there because sh*t rolls down hill. The oil is leaking out the the oil cap and slowing dripping down into the spark plug area. Ever notice how oil runs down the engine then shoots back along the brake lines. Its just how fluids travel, path of least resistance.

Or you valve cover has fracture and small cracks in it that are allowing crank pressure to push oil out.

The evo oil caps are oem spec, they work for all 4g63 motors (just that most will not recommend mobil 1 for their engines). In fact if you check my picture you will see that I am running one. I got a cheap one off of ebay they worked for a month then wend to oem. I love oem.