Theory on why my 90 degree hose keeps busting

[90XTurbo]

I'm on my third 90 degree water hose, the infamous one behind the engine.

My car makes a ticking noise under load, it's not rod knock, but misaligned valve shims are not out of the question.

So I'm thinking, the cause of this may be an exhaust leak at the very back of the exhaust manifold. It could be letting out hot gasses and hardening up the 90 degree hose causing it to become all brittle-like. I baby my car and I RARELY go into boost, I even out the vacuum when I'm merging onto the freeway. My car is all stock too.

So before I go and look at it when it's not raining, any other ideas?

What I want to do, if perhaps it is an exhaust leak from the manifold, I'll have the manifold, turbo and turbo heatshield painted with high-temp paint.

 

[Nick M]

The hose just bursts? Or is it just leaking back there from the hose?

 

[90XTurbo]

It leaks and sprays. It didn't explode into a million pieces.

 

[JonoTurbo]

Check the egr cooler too, that may be leaking and causing it to heat up back there.

Not to be a doomsayer or anything, but how is your HG, high pressure in the cooling system will cause random hoses to blow even if they are new. That one in particular i've had problems with as well.

My old supra had a ticking noise when under load as well, drove it for 15k like that and sold it before I ever did figure out what it was...

Edit: Actually now that I think about it I was told by the guy that bought my car that the egr cooler was loose on it, so maybe that is the cause of the noise and yours is loose as well.

 

[jetjock]

I agree....EGR cooler. Everything jives including the noise. You'd better have small hands

 

[NDBoost]

I agree....EGR cooler. Everything jives including the noise. You'd better have small hands

i once thought about inventing some sort of chest/body harnessthat you hookup to your cherry picker and hang your younger brother/child over the engine while they tighten the bolts for you..

i can see it now :biglaugh: ahaha

 

[suprafly]

if it has no other problems and keeps blowing try some of the green and red silicone heater hose from napa. I use that stuff for my turbo oil dump line. It is real flexible too so it would probably work for this.

 

[hottscennessey]

just re-do the EGR cooler. remove the valve covers, get a 10mm socket, grind it down preferably with a bench grinder so it isnt so long, and get a 1/4" drive ratchet, you can get to all the bolts but it will kill your back. It took me about an hour, but it was an hour well spent to get rid of that annoying "tick, tick, tick".

 

[NDBoost]

just re-do the EGR cooler. remove the valve covers, get a 10mm socket, grind it down preferably with a bench grinder so it isnt so long, and get a 1/4" drive ratchet, you can get to all the bolts but it will kill your back. It took me about an hour, but it was an hour well spent to get rid of that annoying "tick, tick, tick".

dont forget the nasty heat that causes hoses to blow

 

[hottscennessey]

dont forget the nasty heat that causes hoses to blow

exactly, take the time to do it, its worth it IMHO.

 

[suprahero]

Thanks NDboost, I'm on my way to the patent office right now! I may never have to work again if my baby harness comes through and I sell millions. lol.

 

[NDBoost]

Thanks NDboost, I'm on my way to the patent office right now! I may never have to work again if my baby harness comes through and I sell millions. lol.

oh great, i better get some of that money..
outofstep will be on you like stink on shit :naughty: :biglaugh: lolol

 

[TRACKMKIII]

I was reading this post and I have the same "tick tick tick" noise under load, so I ordered a new EGR Cooler and gasket. Before I get back in there in that small space I was just wondering once I remove the EGR cooler will the gasket be baked on (which means I will have to sand it off) or will I be able to just pull it off and replace it with a new one?

 

[RacerXJ220]

I had ticking before... Loose exhaust manifold.

No offense, but the problem with your hoses that keep spraying, are you sure you aren't damaging them during installation? I've done that once, didn't leak initially, but the hose didn't last long at all. Say a set of pliers with rough teeth and a lot of pressure to twist them on?

 

[soup]

I was reading this post and I have the same "tick tick tick" noise under load, so I ordered a new EGR Cooler and gasket. Before I get back in there in that small space I was just wondering once I remove the EGR cooler will the gasket be baked on (which means I will have to sand it off) or will I be able to just pull it off and replace it with a new one?

Pray that it comes off nicely with the cooler plate. I fixed this for a friend once... it was nicely stuck to the head :icon_evil

Lube up the tops of your hands and your wrists. Your hands will still be bruised and swollen after, just not as bad.