Crash227 wrote:
Thanks to everyone for the helpful input. I ordered about $1,500 worth of parts and expect to get started on the work in my cousin's garage soon. I bought the OEM timing belt, water pump, tensioner and pulleys, plus HD clutch fan. Thermostat, serpentine belt and tensioner were all new earlier this year. Got the Samco Hoses and turbo intake hose too, as mine are all shot at 165k miles. Ordered a cool grill guard push bar so I can push our 2WD vehicles out of our snow covered street this winter. City plows rarely hit our street before noon.
I got the upgraded fuel filter assembly too. If the air intrusion persists, I will add the fuel pump in the tank next summer.
After the Timing Belt is done I need to check out my turbo and vacuum modulator to see if it is working properly. I bought a vacuum modulator filter because mine is original at 9 years and 165k miles. I will read the posts about checking turbo bearing play and options for cleaning the turbo. I'm hoping it is fairly clean because I regularly performed the Italian Tune up since I drove it off the lot new in 2006. I also use fuel additives in every tank (Diesel Kleen).
I hope to be able to clean the soot & oil mess out of the intake too. If the turbo is OK, I will drive it to GDE to have them scan the ECM to see if it is bad as the Stealership reported for their $109 diagnosis fee. If that checks out, I will probably get the ECO-Tune to kill the EGR.
If my turbo is bad, as reported by the Stealership I have to choose which way to go on that. Stock OEM replacement seems OK but maybe the Euro Version? The GDE Custom Turbo seems great but I'm not sure I can do that this year after all the money I have spent on the CRD so far. I hope my existing turbo is OK and will last another year. It doesn't make any odd noises and works great up to about 3,000 rpm. After that it sputters but that could be all the bad hoses and clogged intake. My guess is the engine has been starved for air!
Check your turbo. It's easy. Take your turbo to intercooler hose out, stick your hands on the impeller and move it up down or left right for radial play. In my opinion up to 1/8th play is acceptable, provided you don't have scuff marks on the turbo housing from impeller touching the housing and no oil leaks visible on the bottom of turbo housing. Then check for axial play. Push the impeller from the center nut back and forth, you should have no play at all, but a very tiny bit (like 1/32) is acceptable. Again, there should not be oil leaks on the bottom of turbo housing. If you do have some oil on the bottom housing, then that oil can come from the ccv, these engines are known on having some oil blowback through the ccv, especially if you put more oil than 1/2 mark on dipstick. My advice is to install provent 200 (available on idparts.com). A boost gauge would help you know if the turbo is working right, or if you have any leaks on your turbo accessories (hoses, intercooler).
If the above check right, then you may have some stuck vanes, this being a vgt, it uses vacuum to actuate turbo vanes. If those are stuck, the vacuum can't move them, and more then likely you'll get some check engine codes. Scan the codes if you have them and post back, or look them up in the field service manual (fsm) available in the noob guide sticky.
You can definitely clean the soot from intake. Use gasoline once you take the parts apart. Let it soak and use a bottle cleaning brush for the intake valve passages or intake elbow.