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Bearer of Adamantine
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7 Posts
Discussion Starter #1
First off, hi, guys! I know it's been awhile. All the advice you gave me before on my 86 pickup worked. Finally got it running great although it recently blew a head gasket. I'll have to fix that next.

For now, though, here's the problem. My 4-runner got to a point where it wouldn't start. I had replaced the muffler last year because it wound up blowing up (with an incredible boom). It bellows out thick white smoke when it does get started. I tried using starting fluid, spraying some into the intake until it finally started but the smoke was thick and it cut off. Didn't want to start back.

I did the diagnostic thing, and it registered code 24 (mass air flow sensor). I got a refurbished one online and it's at least starting. But there was oil going everywhere and running down the exhaust (where the main line connects). Online diagnosis said it could be valve cover gasket. Replaced it (even though I really doubt it was the problem - it looked good). Got it started. Still leaking all over exhaust. Removed pipe and replaced circular gasket (the new one looks like a metal casing with a black fibery material filling the inside of it) and bolted it back. Got it started again. Noticed oil leaking and found it was running down the intake hose, running through the MAF sensor and out the breather. Did the diagnostic thing again - still 24. Figured that's because it's full of oil. Took it off to drain.

Searched online for info on oil in the intake and now they're saying it could be the PCV valve. Got another one of those and am reading about how hard it is to replace. Before I go though all of this trouble can any of YOU guys help diagnose the problem? I'm hoping it's not the PCV valve, especially considering it's on the passenger side and all the oil is coming from the driver's side. Am I overlooking something? I'm sure everyone here has more experience with these things than I ever will, so any and all advice will be greatly appreciated! Thanks everyone!
 

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Soylent Green sales
rock crawler
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12,801 Posts
At beginning you said it was putting out thick white smoke.
That sounds like you're burning coolant, is it still doing that?

Next is oil IN the intake manifold? I suppose a lot of blow-by from a worn engine might do that.
 
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