if there is a big leak the wastegate won't actuate. if he has a leak the truck will have power loss, if he has a leak he will have higher EGTs, EVEN IF the boost is fine, the leak may not be "big" but a loss in CFM making it into the motor will cause all of the above. His wastegate may be working fine, as he said the boost was fine, but with a small leak the engine has to work harder to get the same PSI#, over spinning the turbo and making it sound different than normal.

 

Hey Guys I'm back. Replaced the AFC boost reference and overflow valve. No change what-so-ever. Still high EGT's at idle and under heavy acceleration. Lack of "catching power" with heavy acceleration, vibration at idle.

Haven't found a shop yet I trust to check out the timing. The shop I took it to for the LP said they pressure tested for boost leaks and didn't find anything, but I don't know if I should believe them or not.

I have a new problem now. In cold weather the truck will jump out of drive and into N or R. I'm going to denigrate my sun gear plate if it keeps this up. It popped into reverse I was doin maybe 10mph and I thought I was going to toast my trans, its a goerend though and survived, but so far and it hasn't come obove freezing yet so I can't tell. But in this cold weather it wont stay in gear.

 

have u looked into weather or not the Wastegate will move ? try moving it by hand ...

 

if you can move it by hand then it needs to be replaced.

 

I have a list of things I need to check or recheck when I get home (at a university right now in a parking garage so I can't do jack squat really).

1. Check waste gate
2. Check / adjust timing
3. Fuel Replace FP gauge and recheck (even though shop was supposed to)
4. Check for boost leak (even though shop said the did that too)
5. Compression check
6. Injectors/pump?

If an injector or the pump was going bad would it absolutely have white smoke at idle?

 

if an injector was bad .. yes on white smoke ..if IP yeas to white smoke as well .... or no start ...

 

Ok. It only has white smoke at start-up in cold weather and only for a couple of seconds.

Would it be a good idea to get my valve lash rechecked when they do the timing. I had it reset about 3k ago, but who knows.

 

Mine does it too when cold .. a few seconds isnt a bad indicator ... a tune up might take care of most of that .... if not .. injectors could be dribbling a bit .. unless its like non stop your gonna be fine..... minor irritant IMHO ...

 

I'm not sure exactly what a "tune-up" consists of on a diesel. It's got a new Fuel Filter and LP, overflow valve, and AFC boost reference hose, and oil change. I know for a fact that some of the injectors leak a tiny bit form the grommet, and the return line appearently has a small leak. This was something I was told "not to worry about".

 

not necessarily. injectors will haze when they are leaking though