OK heres the scoop on my 96, There was no distinguishable cranking speed change with the CS lever pulled VS not pulled. I as well can detect a slight clatter tone change when going from CS lever not pulled, to pulled. Also, the cold start does seem to make a difference on the quality of the start when it is cold(go figure). After it started today I immediately pushed the lever back in and although it continued to run smooth, there was a miss or misfire on a couple cylinders for about 30-45 seconds or so. This cleared right up upon activation of the CS lever again. This leads me to believe that my setting is not too far advanced. If it was i dont think there would be any change when you pulled the CS lever, am I correct in thinking this?Wade
I'm assuming the smoke is due to injector lag, which is why dynamic advance is implemented; but over time, it seems that the dynamic advance is not as limber, due to wear, weaker delivery valves, low internal IP pressure and out-of spec injectors.
Pros to retarded are emissions, and sound as you have noticed. Diesels in the 80-90's were loud and smokey.. and not many liked them in North America because of what GM screwed up with the Detroits (yeah yeah, keep it in your pants GM guys, they were not a good engine design lol!)I and many others run at the same spot you are right now, to where it starts to clack-clack as if you poured marbles down the intake. You are right on the brink of too much timing, but that is ok because it can't really hurt anything unless you go way overboard!Try this, on a cold start pull out your COLD START handle prior to cranking. Do you notice the engine turns slower then with it in? If so, you are right on the brink of injecting fuel too soon. If it does slow it down you are injecting fuel so early it is fighting the piston on its way up in the bore! Which is no good for starting, perfect for warming up as it will be part of the compression as well, and not so good for high rpm use as it will be again fighting the piston.
Agreed, the 2 stroke stuff was and still is the bomb.. but unfortunately Detroit Diesel's name is also on the Oldsmodiesel lol.
The 6.2/6.5 were designed from the bottom up as a new diesel engine, but the 5.7 was based on an olds engine.
I discovered my cold start cable housing was pulled out of the bracket... that explains why I was suddenly getting worse mpg's that last couple weeks