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What did you do with your GMT400 today...or yesterday....

Anyone have any ideas as to what might have caused this constant clatter when the TCC turned on? the engine wasn't fully warm yet as I had only driven maybe 2 miles into my trip to work. outdoor temp was around 60 degrees this morning leaving. the noise sounded as if the timing went way advanced or retard. I wasn't accelerating too heavy so the engine wasn't under a lot of load. checked my mirrors to see if there was any smoke and didn't see anything. I doubt me adding this bottle inline on the provent hose caused this.

Now in the past before I installed the provent, on occasion the engine would randomly sound like this for only a split second even when not under load. I had shrugged this off to thinking too much oil was making it's way into the intake and must have pooled up then the engine swallowing it. again these random instances would only last a split second and was random. after installing the provent, it hadn't occurred since until this morning this escapade lasted about 30 seconds. of course when it started, I let off the throttle, this caused the TCC to disengage. when accelerating again the clatter continued before I felt the TCC turn back on.

it didn't act like it was trying to take off or seem to loose power, just got loud and really clattery.
 
what can be done or why is it advancing timing? is this a problem in the IP trying to warn me? it normally runs relatively quiet, quieter than my 95 runs as far as the diesel sounds. very quiet and smooth acceleration too. you almost forget your driving a diesel when your on the open road!
 
well the drive home went un-eventful. got home and then checked the jug and hoses for any residue of oil. Note, I did wash the jug out with some diesel and when I looked inside, low n behold there was about an ounc or so of diesel in the bottom! it was clean though. I pulled the hose off the outlet of the provent and looked inside, it was dry with no residue of oil with a 12 mile round trip today. no sense in going further with it anyway as Will pointed out.

pulled all that hillbilly mess off and connected the provent back direct to the turbo boot like it was....

I am going to chalk this up to the extra oil loss to external leaks. just need some advice on if I can safely pull the cam sensor oil pump drive off and swap it for the oil pump drive on the other engine to stop that leak.
 
@ak diesel driver I believe you are talking about this part of the IP in this video. time starts at 1:32 and continues till 6:58. I do know the little plunger behind the advance lever does not return when the engine is off if pushed in. I discovered this when I adjusted the piece on the throttle shaft. I had adjusted it since it was not contacting the lever until about 1/2 throttle a while back. I had compared it to the IP on the 6.2 engine and set it accordingly. this adjustment made a major difference on how the engine is much quieter under acceleration.


I'm not sure I want to attempt to pull the IP and mess with this in the way this guy did. I wonder if it did have water in the IP if over time that water would evaporate out with heat and running where I could possibly fill the filter with ATF or some other oil that would help clean it, work that plunger pin and lever without pulling the IP and then let the engine run flushing the ATF out with fuel.

Maybe @Will L. or @Rockabillyrat can help with their vast knowledge on this and the symptoms I witnessed this morning as well.
 
Pulled the power steering pump and returned to Napa. They will have a new one to me in 2 days. The box says Hecho in China. If the next one does not work, I will request reimbursement and go with an AC Delco unit.

On the bright side, set a new record of 30 minutes to pull the pump. If I had a knowledgeable assist handing me tools, I could get that down to 20 to 25 minutes.
 
Big T said:
Pulled the power steering pump and returned to Napa. They will have a new one to me in 2 days. The box says Hecho in China. If the next one does not work, I will request reimbursement and go with an AC Delco unit.

On the bright side, set a new record of 30 minutes to pull the pump. If I had a knowledgeable assist handing me tools, I could get that down to 20 to 25 minutes.
Click to expand...
I'd skip the frustration and go ACDELCO now.
 
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