Bit of oil coming into throttle body.

[weekendclimber]

I have noticed that a little bit of oil comes into the TB from the vacuum line just after the silencer and in front of the intake. Similar to this post (hose coming in from the side on the first and second pictures):

http://www.toyota-4runner.org/3rd-gen-t4rs/140850-oil-tb-vacuum-hose.html

It's not real bad. Here's a shot inside the top plenum:

I don't know when the last time the TB was taken off. It doesn't show anywhere on the Toyota maintenance logs, and I'm sure that all the work I've had done on it the shops wouldn't have need to take it of. Looks pretty clean to me for 200,000 miles.

Thought I'd try and add a filter to try to keep the TB cleaner into the future just for good measure. Anyone else try this? In that same post I mentioned about, it is said that later models have a filter here. Is there a part number for that? Thought I'd try and rig something like this up:

5 16" Gas Filter | eBay

 

[Swimmerboy2112]

Time to replace the PCV valve!

 

[weekendclimber]

Did that about 3500 miles ago. They're only like $3, so am going to do it again and check back in about 500 miles or so and see if it's still leaking.

 

[AZ4Running]

Some oil is normal. Pcv valve is my guess as well

 

[weekendclimber]

Some oil is normal. Pcv valve is my guess as well

That's what I've heard too. Maybe I should just stop worrying about it. Gonna need the valve covers done soon though.

 

[LittleCaesar]

That is pretty darn clean. Change the PCV again. If you aren't burning oil, don't lose any sleep over it.

 

[weekendclimber]

That is pretty darn clean. Change the PCV again. If you aren't burning oil, don't lose any sleep over it.

I am actually looking forward to doing the valve cover gaskets so I can clean it up and make it sparkle. I'm really interested to see what the cams and valves look like on top. The spark plugs came out pretty clean after the last 30,000 miles:

 

[LittleCaesar]

They look good. No worries, thought it looks as if the spark plug wires came out with two of them as well.

When you change the VC gaskets, save your pennies to change everything that needs to be at once. There are a myriad of DIY write-ups for such with part numbers included.

 

[CitadelBlue]

That's what I've heard too. Maybe I should just stop worrying about it. Gonna need the valve covers done soon though.

Generally, what should I expect to pay for a valve cover gasket replacement?

 

[weekendclimber]

They look good. No worries, thought it looks as if the spark plug wires came out with two of them as well.

Yeah, I think its a good idea to do the wires at the same time. Had to pull one wire with pliers and broke a piece of the top off into the plug hole. Got it cleared okay though. Another one had the metal clip come off the wire and get stuck on the plug in the hole. That almost sucked.

Generally, what should I expect to pay for a valve cover gasket replacement?

Not sure what a shop would charge, but a basic gasket set is only $70. I'll probably swap in new injectors while they are accessible and scrub the fuel rails, etc.

 

[TheDurk]

Check your coil plug boots as well. That rubber stuff could have come from the coils as opposed to the wires. In any case, they need checked if the wires were that stuck. You can get just the boots for the coils, Amazon has them (NGK CPB-T003) as well as the NGK TE-66 plug wires.

That's one good reason why I apply dielectric grease to the coil ends and the plug wire ends when I do my plugs. That's never happened to me.

 

[Asaspades93]

Generally, what should I expect to pay for a valve cover gasket replacement?

The dealer recommended new valve cover gaskets and want 850 for the job...
I'm gonna tackle them with some help this weekend as well as pcv valvem spent 70 dollars , but didn't get a throttle body gasket as they were out
Valve cover gaskets - 1121362020 x2 $26.73, 20.57 (msrp, online price for parts)
Throttle body gasket – 2227162040 4.83, 3.71
PCV valve 1220462010 $10.57,8.14
PCV valve grommet – 9048018001 $5.23, 4.02

 

[LittleCaesar]

The dealer recommended new valve cover gaskets and want 850 for the job...
I'm gonna tackle them with some help this weekend as well as pcv valvem spent 70 dollars , but didn't get a throttle body gasket as they were out
Valve cover gaskets - 1121362020 x2 $26.73, 20.57 (msrp, online price for parts)
Throttle body gasket – 2227162040 4.83, 3.71
PCV valve 1220462010 $10.57,8.14
PCV valve grommet – 9048018001 $5.23, 4.02

Don't forget to replace the cam seal plugs as well as to remove and reseal the semi circular plugs (or half-moons) with some FIPG.

5vzfe leaky valve covers fixed (56k beware) - Page 2 - YotaTech Forums

 

[TNcaveman]

I have noticed that a little bit of oil comes into the TB from the vacuum line just after the silencer and in front of the intake. Similar to this post (hose coming in from the side on the first and second pictures):

http://www.toyota-4runner.org/3rd-gen-t4rs/140850-oil-tb-vacuum-hose.html

It's not real bad. Here's a shot inside the top plenum:

I don't know when the last time the TB was taken off. It doesn't show anywhere on the Toyota maintenance logs, and I'm sure that all the work I've had done on it the shops wouldn't have need to take it of. Looks pretty clean to me for 200,000 miles.

Thought I'd try and add a filter to try to keep the TB cleaner into the future just for good measure. Anyone else try this? In that same post I mentioned about, it is said that later models have a filter here. Is there a part number for that? Thought I'd try and rig something like this up:

5 16" Gas Filter | eBay

Hey Weekender - I used one of those on my '89 4runner and it really helped. But, your intake looks pretty clean compared to ours. I'm going to add one to my son Chuckles' '98. Go to Walmart. They are hanging on a pegboard display and you can more easily size it. BTW, it will turn brown in a few miles if you have a lot of blowby. And, it will change shape due to the heat, but I never had one melt.

Stephen

 

[Myrunr2010]

Thought I'd try and add a filter to try to keep the TB cleaner into the future just for good measure. Anyone else try this? In that same post I mentioned about, it is said that later models have a filter here. Is there a part number for that? Thought I'd try and rig something like this up:

When I did my valve cover gaskets I noticed the same oil that you are talking about. Then I went to pull the intake off one day while the motor was still warm and noticed some oily substance in the j-pipe on the intake assembly. I ended up putting in an oil catch can on the line that you're talking about as well as the PCV hose going back to the intake. For reference, my PCV was brand new when I did the valve cover gaskets. I assumed that the oil must be coming from the hose that you are talking about, but the catch can on that hose hasn't trapped anything while the one for the PCV has. I pulled the j-pipe off again the other day and there was no oil in it. I haven't pulled the intake off to check and see if there is any oil in it though.