Chevrolet Cruze Forums banner

2014 2.0 diesel too much boost?

8.2K views 38 replies 11 participants last post by  shimmy816  
#1 ·
The intake tube going into my manifold blew off with a POP!. I thought I blew out the turbo until I noticed the tube off. I'm not sure if I'm not sure if the wastegate isn't opening up or if the fitting is just weak. Not sure how to go about diagnosing the problem. Any suggestions?
 
#2 ·
The 5 hose clamps between the air box and turbo are know for loosening over time. Always check those clamps for tightness at every oil change.
 
#3 ·
I don't seem to have a "pre turbo" problem. it's after the intake has been boosted, after the intercooler, going into the engine intake manifold. Popped off due to the pressure or due to a weak fitting. I have 90k miles on it. I have the manufactures shop manual, but it is very hard to find the diagnosis procedure to determine if it's a sensor, or part of the control electronics.
 
#4 ·
Are you referring to the large plastic pipe that runs into the throttle body/regulating flap? If so the clip on it can get weak over time and pop off.
 
#5 ·
Thanks Greg, I should’ve read the OP more closely...yes I recall several posts here about that clip at the intake manifold loosening/weakening/breaking causing the pipe to blow off.
 
#19 ·
If it fits, I can't imagine that wouldn't lead to a slight improvement in performance, given the performance should be better. But it's definitely tight quarters, which I imagine is why GM went with what we have.
 
#20 ·
My goal for replacement would be simple easy to find parts vs dealer or junkyard/eBay. Yah definitely it’s right but I’ll have to look again, at some point I thought to measure the space and see what we are working with. Maybe we can move the computer over a bit to the fender to allow normal pipe.
 
#22 ·
I did the hose clamp thing to the bottom of that same pipe.. the intercooler output.. constant small leak. Got a new one leaked worse. tried a silicone hose on the old one cutoff to make it fit, no good. Put high pressure oil resistant sealant around fitting and then used clamp to make sure it stays there... no more problems. Not sure how much boost but over 30 minimum. Im working on getting a physical sensor and not relying on the cars output, it stops a 22. Now that the leak is fixed I can finally get it dynoed and tuned.. yahh
 
#27 ·
Yeah, that's the one most people have an issue with cracking, I believe.
 
#37 ·
when talking to exergy about what they found if you can figure out how to cram another or bigger turbo into it, it should be good for up to 250 hp fuel wise. It's already a hoot to drive. 60 more ponies would be fun but the trans would probably let loose at that point

I'm not sure what they found out /got to. It sounded like the parting of ways with tech who was working on it may not have been on the best of terms at the end .so I have the modified/new turbo sitting in a box
 

Attachments

#39 ·
that's a nice pipe... wait ... that didn't come out right...lol No really I would love to have that. The bottom end wouldn't be to bad to redo as has a lot more space. the connections are the crucial part as even after getting a new one the bottom intercooler connection still leaked no matter what I did. I finally just ended up puting high temp silicone in the whole connector and jamming it on then using a strap to keep it from backing off. It holds up to 35 psi when testing. Probably the best thing to do would be to replace the whole intercooler with one that has a more traditional connection.