Weird oil pressure drop...

[Liger]

well today i raced a built civic from a 35mph roll and won obviously , but ne ways. i have a evoIII b16g, walbrol 255, dsmlink, exhaust and bov. so onto the problem, while i was racing him i heard a little sudden faint hiss and then i let off the gas and it went away and came back in spurts every now and then when we did a few more pulls. but after all of this i noticed and on the stock oil pressure gauge i am reading a little lower than normal. it's a 2g and it's not just a the first bar where it used to be in the middle or just a the top of the little oil filler can thingy in the gauge. I wasn't able to check my oil level since it sucked the dipstick down in the oil pan cause the top is broken off (stupid plastic) but i went to the store and added about a 1/2 of a quart of some different type of oil but same weight and all that, just different brand. i got home and fished the dipstick out and found i'm actually about a half a quart or so high about the second notch. i am guessing i blew the gasket on the oil cap maybe since it's always leaked and now i think i just blew it out? but the car runs the same and pulls just as hard. during the pulls it smelt kinda funny but i think that was cause i was running rich with now fpr and that some of the oil was burning off on the valve cover? or getting hot at least. Keep in mind i raced with about .25 a quart above the top notch. So i think the pressure just blew the gasket on the oil cap and now it can't hold pressure? cause now it kinda moves from the first line to just above it. I dunno and sry for the long post , but feedback is much appreciated. i'm worried about my baby. -Brandon [VFRacing]

 

[BrokenTsi]

I dont think oil pressure would drop on the gauge from the oil cap. What you're smelling probably came from the oil cap gasket, but as far as the gauge goes, maybe the oil sending unit has gone bad or has a small leak. Also, not having a dipstick, you would smell that too. I know I can on mine sometimes when it pops out.

 

[Liger]

yeah, but the oil would leak out some and get on teh valve cover and heat up and smell some. i dunno though, it just randomly did this so i am not too sure and it sucked the dipstick in, not out. i'll just draing the excess oil and maybe i'm just loosing pressure from the oil cap not sealing tightly.

 

[Liger]

Any other thoughts?

 

[Liger]

In case ne one really cares about this oil thing, but i found the problem i think. The oil that i used to run was 15-50 so it's thicker but now i run 5-30 so it'll be thinner thus lower oil pressure. -Brandon [VFRacing]

 

[blue1]

Would you care to post the oil pressure reading's before and after. 15-50 is a high viscosity oil for these engines! and the oil cap has nothing what so ever to do with the oil guage readings!