Guess not on agree to disagree scenario. Ok.
I did assume something not written. My impression was you work or worked professionally in a shop rebuilding injector pumps. Am I wrong? If so please correct me.
I have said an IP operates on pressure and not volume
Umm. Why do the diagnostic procedures from GM before condemning the ip include pressure test in, volume in, and volume out amongst others? When I worked at a dealership, I forgot one time to do the return pressure readings and warranty was denied to the customer until I did the test and included it in the form. I felt bad and paid the added days car rental for the customer myself, so that one sticks in my head. It was pretty dumb of me because I had to have the two rubber line off anyways for the clear pvc tubing for the intrusion tests.
Hmm, turns out I make mistakes. Sucks me being the only one and all.
You said Proper pressure and volume by the factory line- blah blah blah. Crap! You would have been an engineer- SO GLAD you swapped majors. So many engineers that think the labratory is exactly how it always works in the real world.
If the pump is new and at perfect temperature and no vibration, perfect fuel, and happy music in the labratory. If the pump and entire rig works exactly perfect -yes. But deteriorating fuel lines, a bit more water in the fuel, some wear in the ip because it has 235,000 miles on it, maybe some worn injectors that are dumping fuel too long in a couple cylinders and barely in another. Hows about the chemical breakdown that is occurring because of the aluminum housing affecting the biofuel which everyone knows is not supposed to be in contact with non ferrous metals. How about the fact that the viscosity of the fuel has dramatically changed since the books were written. Hows about the massive lubricity losses since then too. Think that has anything to do with ip performance and how the pressure and volume relates.
No? How about in the lab compared to the restrictions in the return line. Often the worn injectors cause more chatter and add restriction of flow along with the alchols in the fuels nowdays that the retuen fuel line wasn’t built for and causes interior degradation plugging the line some. So what happens there... the restriction of flow causes the incoming pressure to increase yet volume decreases. Now because the majority of the retriction is from the injector chatter, it pulses but doesn’t stop flow completely or continuously.
I have seen this multiple times. Also in the high performance applications. Other than rebuilding and replacing the injectors, especially since the allotted pop pressure differences in a set was horrible and the junk from delphi would be pushing the limits all the time. know what fixes it? Keeping pressure the same but increasing volume. Your best friend Boyle says increase the line size to do that. I sure am proud to have invented that fix!
Oh, no, wait, I didn’t. I read it in the generator maunual that had the 6.5s powering them. Ya know why that was more important in the generators not because of annoying noise, but the vibration of the engine creates a frequecy disturbance and keeping a clean power wave becomes impossible. Wierd right? So later when I saw the chatter in a pickup and it caused an engine vibration at specific speeds, I remembered some wierd fix and dug up my old notebooks. 20 minutes later with the use of a larger line from the filter to the ip, the problem was solved. Granted, the right fix is make the customer replace his injectors that he just replaced 20,000 miles earlier, and see if that helps. Then replace the entire return line too. So if you ever have that issue, go ahead and buy some parts, drop the tank and have a fun afternoon. I’ll just swap the $2 fuel line. Later when talking to the GM engineers when we were helping solve the waterpump redesign failure, I showed that to them. Go compare the 2000 procedures to the 95 or 96. That was from me telling gm what mq figured out.
And no I didn’t read the legal links- I really don’t care that much.
And again I must request we get a good sarcasm font. Don’t sweat it bro, you’ll catch on.
Your effort to promote the carb laws inspires me to go burn a quart of oil in my wood fire pit by the pool and enjoy the way the smoke looks against the stars.
Dude, again you haven’t experienced it so it must not be. The feller from Alaska says clearly he has a lot of miles driving the platform, and hasn’t had the problem. You figure he is lying or just dumb like me?
Now unbeknownst to you he has many years on this and other forums of excellent diagnostic skills of these rigs as well as some very creative upgrade solutions to his credit. Your argument to him discredits you more. Maybe if you could see the face of the jurors, you could adjust your gameplan more.
you already threw out your a lawyer and went to school as an engineer- so your proclamation of expertise is up there a bit. All I need is for you to keep arguing and showing more errors to look better by default.
Ive been here enough that the guys and gals here seen me make errors before. But I am not perfect and freely admit when I am wrong. I shoot from the hip all the time, so an occasional wild shot happens and doesn’t hurt my feelings. You should try looking in the mirror and tell yourself “It’s ok to be wrong. You will still be likeable. Admitting errors doesn’t mean suicide is the only option.”
Has anyone ever notice there are 10 letters in both the words narcissism and California? Wierd right? Glad I’m not a perfect 10!
