without a boost gauge, is there anyway to test for a leak in the plumbing? i don't think there is an issue, but seems a slight lack on power...fuel filters etc, pretty new

 

You can make a PVC cap to put in the intake before the turbo and tap it for an air hose connection so you can pressurize the system.

 

Spooler is correct- but, before you test it, can you give more specifics? You say it's new- do you mean that you just recently got it? You could just be experiencing the reduction of power due to winter fuel blend. I felt it in mine.

 

He may have a real leak, especially if he as the 05' with the plastic endtank CAC.

 

the winter fuel might be it, i guessed i noticed it within the last 3 weeks or so. it still has snort, but seems 10% down. maybe i'm used to it and me more?? i am in wisconsin, and i'm sure they blend the fuel, but when do they start that? can you explain how to pressurize the system...thanks

 

I used to have access to a machine shop and I made plugs out of ehmw. I found a loose clamp on my 97 with them. Only one slightly loose clamp will lose a LOT of air. The 3/8 hose from my compressor couldn't even keep the psi to 10 and the leak still wasn't big enough to hear when I drove it. Craig

 

Are you saying if you plug the intake ahead of the turbo you can pressurize the system all the way to the intake valves? Wouldn't
Some of the valves be open and leak? If not, what is a safe PSI for the test? Am I on the wrong track?

 

Yes, you can take the hose off between the air filter and the turbo, and make something to clamp on to the turbo in its place. It is surprisingly easy to get it to pressure up, sometimes you will get some leakdown if both valves in a cylinder are open, but if you give the engine a bit of a turn you can find a spot where it'll hold pressure.

I usually use around 20 psi when I do it. I have a picture in my gallery of the boost tester I made. Works great and has found lots of leaks on lots of trucks.

 

One plug is solid and the other is tapped for a gauge and fitting. I plugged the rubber boot at the intake elbow and the other boot at the turbo. Once I found the leak I went up to 30 psi and everything was quiet. You might not want to go that high with plastic endbells. I don't use them anymore. I just keep the clamps tight and watch for low boost. A pressure test is really the best way to prove the system is tight. I really should test my 03 that way. Craig

 

it might be easier to buy a boost gauge, so i can keep an eye on it forever. where does the gauge hook into? hard/easy to install? how much boost should i expect ? Thanks.

 

My 12v had a pipe plug in the side of the manifold towards the back of the engine. I don't know if the CRs have that. I took out one of my intake cover bolts, drilled a small hole thru it and silver soldered a 1/8" FPT fitting to it. I know you can buy them that way but I don't know who sells them. Some turbo compressor housings already have a port. I imagine there will be a few psi difference between the turbo and the intake manifold. If you haven't had a boost gauge and you don't know what psi it usually runs, it would be hard to tell if there is a leak cuz you won't know what to compare the psi to. Craig

 

the easiest thing to do is to order a boost adapter from genosgarage.com $7.50 a oil pressure gauge installation kit from autozone get the copper line one for $11 get a glycerine filled 60 lb gauge from ww granger about $20 your 05 will go to a max of 27 psi about 7 psi driving 75. i make my own bolt but it is fun and i have a good shop