08-19-2019, 01:20 PM
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#16
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Like others said, the only way it can end up in your intake is through the PCV valve or the breather valve on the back of the driver's side valve cover. The only way it can come out of the PCV is if there's so much oil in there it filled up the cylinder heads with either froth or just straight oil. So you most definitely did not run out of oil, you would not have seen a drop in your intake.
Check to make sure the dipstick tube did not find a way out. It's only held in place with one 10mm bolt. If you shine a flashlight near the bottom of the engine block you'll see where the tube goes in, make sure the o-ring is seated completely.
Like others said, drain you oil and then measure it as you fill it. If you don't have the oil bottles, use a milk jug. Should only fill about 1 1/4 milk jugs, I think you'll find you'll be closer to filling two completely.
Also, check your drain plug is seated correctly and you're not losing oil that way. Replace the gasket on the drain plug as well. Check your filter is on tight enough that it does not leak.
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08-19-2019, 02:49 PM
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#17
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Did you have the oil changed somewhere? I wonder if it's possible that they inadvertently swapped dipsticks on you. Maybe try measuring the length from where it sits on the top of the tube to the 'full' line. I'm sure someone could measure a 'proper' one to see if that's the culprit.
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08-19-2019, 04:07 PM
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#18
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Here you go. 17.75" from where it rests in the tube to the end.
The low mark is .5" from the end and the full mark is 1.25" from the end.
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Last edited by alumarine; 08-19-2019 at 04:12 PM.
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08-19-2019, 04:39 PM
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#19
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I can't say I have ever seen this issue before in the multiple 3rd gens I have been around/worked on, but I am going to go with the most recent theory here - you've put wayyy too much oil in the system from a somehow inaccurate reading.
I'd advise not driving the rig until you can figure this out!! The oil in the intake is a bad sign already, and with only 100k on the clock, it would be a shame to put 'er down.
Hope you get it solved soon!
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08-19-2019, 07:01 PM
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#20
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@ jack333
I'm seeing a lot of folks saying that it's over-filled. I sure hope that the oil place didn't drain your transmission: I might just double check that.
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08-19-2019, 07:14 PM
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#21
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I recall a 1979(?) Toyota Corolla that had a bad PVC & was letting oil into carbed air filter housing-
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08-22-2019, 02:28 AM
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#22
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Update #2
All,
i have replaced the PCV, cleaned out the oil from intake to ensure if any other oil is identified in the system that it’s not just residual fluid from the first leak. I’ve driven about 50 miles on the new PCV and haven’t seen a decrease in oil on the dipstick. Mav sensor isn’t leaking any fluid either which was our first clue that oil was in the intake to begin with. It seems that the problem was solved by a 3$ PCV from O’reillys. These 3rd gen’s can surprise you. If s**t hits the fan again i’ll repost here for more advice. Trying not to get my hopes up.
Thanks
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08-22-2019, 10:39 AM
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#23
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I'm sorry, but the root problem isn't fixed.
A PCV is just a vent - allowing the pressure of the crankcase to vent to the throttle body. Oil does not normally contact the PCV aside from minor splashing around.
One simple test you should consider - start the truck and, while running, remove the oil fill cap. You should notice a slight change in how it runs, but nothing major. There should be slight pressure, like a light fan blowing, but nothing more.
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08-22-2019, 01:08 PM
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#24
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Quote:
Originally Posted by jack333
All,
i have replaced the PCV, cleaned out the oil from intake to ensure if any other oil is identified in the system that it’s not just residual fluid from the first leak. I’ve driven about 50 miles on the new PCV and haven’t seen a decrease in oil on the dipstick. Mav sensor isn’t leaking any fluid either which was our first clue that oil was in the intake to begin with. It seems that the problem was solved by a 3$ PCV from O’reillys. These 3rd gen’s can surprise you. If s**t hits the fan again i’ll repost here for more advice. Trying not to get my hopes up.
Thanks
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Did you ever confirm if your oil light on dash is working, or did you get it working by now? Before with all that loss in oil, it should have tripped the light. Or were you overfilled? There's a wire that runs to the low oil pressure sensor/switch in area of the oil filter in the block.
That wire was broken off on a 3rd gen I bought that was running with only 1 quart in the oil pan. So the light was never tripped. I think I recall it was the tab on the switch broke off and I just replaced it from a parts truck I had. Easy to swap out, just unscrews out of block.
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08-24-2019, 09:52 PM
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#25
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Quote:
Originally Posted by toyotaspeed90
I'm sorry, but the root problem isn't fixed.
A PCV is just a vent - allowing the pressure of the crankcase to vent to the throttle body. Oil does not normally contact the PCV aside from minor splashing around.
One simple test you should consider - start the truck and, while running, remove the oil fill cap. You should notice a slight change in how it runs, but nothing major. There should be slight pressure, like a light fan blowing, but nothing more.
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Still driving on it and oil hasn’t decreased one bit. I really do believe the PCV fixed my problem. Tried your test and sounded like a little fan.
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