Blow by tube

[quadzilla]

Hi gang,

Been awhile since I was here, but good to be back.



I have noticed a lot of dripping under the front of my truck. At first, I thought the steering gearbox was leaking, as that is where all the drips were coming from. After looking a little closer, it is coming from what I think is called the blow by tube off the front of the fuel pump. I had it in to the dealer today, and they said there wasn't supposed to be anything on it to collect the fluids that come out. Is this true? I did a search on this topic, and wasn't coming up with anything, so thought I would throw it out there to the experts. I think I remember some discussion on this a while back.



Thanks,

Craig

 

[RJOL]

You Might Want To Try A Different Dealer

The is a breather tube and it does come with a plastic bottle attached to the end to collect oil.



A lot of members have extended this tube to get it out of the area behind the fan. The fan blows oil all over the place, especially if you don't drain it occassionally.



Most of the threads on this say that there is very little oil that comes out of the tube, while parked, and with the tube extended, the engine area is a lot cleaner... .

 

[1 ALC]

I found this one day while looking for simple mods...



Blow By Bottle Relocation



I'm going to do mine next oil change.

 

[RJOL]

Word of Caution

If you do a search of past threads on this subject you may want to reconsider the length of hose you use to modify the breather tube. If this hose gets blocked by anything (mud, water that freezes, kinks in the hose, or whatever), you will be taking a chance on doing some serious damage to your engine... A lot of members, including me, just extended the tube straight down and tied it off to the stabilizer bar. Most have found that there is little to no oil that drips from this while parked...

 

[John]

Rick is correct! I extended my blowby hose similar to the link 1ALC provided... . bad idea! The part that really bites is the fact that I knew better when I started that project. After several members I consider to be highly credible on the TDR BB relocated their blowby hose (as described in the link)... and reported back that it worked, I thought, what the heck maybe I'm wrong. hmmm



Anyway, I installed the lengthened blowby breather hose with a constant and progressive downward slope to the rear. After many subsequent checks after the installation (which was during the late summer if memory serves), I decided I must have been wrong about my assumption of the breather hose extension and any possible negative ramifications. hmmm



Then I checked it again (although it had been a while since the last check and it was winter now)... I found a gray grease like substance that had condensed on the inside of the breather hose, starting at least 4-5 feet from the outlet. Just as I figured it would do... the vapor would cool and condense forming a grease that would eventually result in plugging of the hose. It worked ok in the summer however, the hose was just too long to function correctly in the winter (and our winters in Western Washington are nothing like most of the rest of the US experiences! Anyway, lesson learned!



I decided to shorten the hose and zip tied it to the track bar. Results: no problemo

 

[1 ALC]

That makes good sense, I'm just going to drop mine down by the Stabilizer Bar.

 

[RJOL]

Not Just Oil

Just to add one more thing to John's experience.



Those TDR members that still have the bottle will confirm that it's not just oil that ends up in there. In fact, a lot of it is water/grunge. If you use the long tube/hose idea, and think your okay cause you don't off road, or get water up under your truck, your going to find out that the truck oil breather produces enough water by itself, to give you problems in the winter... .

 

[TBarrett]

What about water crossings

The best ways seems to be to the stabilizer bar. What if you do water crossings if out camping or hunting? Would the water get sucked up into the engine and while the end is under water is it long enough time to have a pressure problem by being blocked?

 

[Bigsaint]

TBarrett, the tube doesn't suck, it blows . This would act as a restriction and could blow out your engine seals.



Scott W.

 

[John]

Originally posted by Bigsaint

the tube doesn't suck, it blows

..... careful Scott, no Monica and slick Willie jokes, this is a family forum.

 

[Bigsaint]

Scott W.