Changed oil, it was a little thinner than normal and smelled slightly of gas. Injector o-rings? Good power, burns no oil..vg33e swap

[Nefarious]

Hey everyone. I was a little late on my oil change last time and I started hearing my lifters a little on acceleration. As soon as I heard it I went home and changed my oil and when it drained out, it was thinner than normal and smelled slightly of gas. Normal colour for old oil just thinner and smelly. I put in some fresh 5x30. My dipstick was full, my vg33e swapped motor doesn't burn a drop of oil, so I'm assuming I don't have bad rings or anything, the motor feels strong.

 

I did use the original injector o-rings when I swapped over the vg30e fuel rail to the vg33e lower manifold, is it possible for fuel to get into the oil from leaking o-rings?? My truck was running pretty rich when I first did the vg33e swap it took the old vg30e ecu a while to relearn the new engine (also added headers/intake/exhaust at the same time so it was a big change from the stock vg30e with cracked exhaust manifold, lol). It doesn't seem like its burning too rich now though.

 

Just looking for opinions before I tear the upper manifold down again! thanks

[Kyle94]

Mine too smelled like gas the last oil change... chalked it down to I think a leaky injector which is causing my miss every once in a while... couldn't get it fixed... but changed the oil. Haven't checked it since. But almost time to do another...

[NissanNismoZ]

I agree, I'd check for a leaky injector.. is it using.any oil at all?

[Nefarious]

No it's not burning any oil, well not enough to notice it go down the last 8000km or so anyways. You know I have a slight miss as well, mostly noticeable on deceleration. When you say leaky, do you mean the o-ring seal, or the injector itself is shot??

Edited June 24, 2012 by Nefarious

[NissanNismoZ]

I mean seal wise..maybe one is leaking down past the Injector..though it is possible the injector is sticking open but usually you'd see a code.

Maybe start by checking resistance on all injectors and see if you can find an odd one out?

Edited June 24, 2012 by NissanNismoZ

[Nefarious]

ok thanks just wanted to get some heads up before i pull everything apart. seriously thinking about that phenolic spacer while i'm at it to lower intake temps. I'll order a new set of injector o-rings as well. thanks for the heads up boys (and girls).