Turbo Woes
Hello everyone.
I'm having a few issues with the Turbo on my 97 K1500. I've owned it since December and even though I've ridden in many vehicles with the 6.5L before, had not noticed that I didn't hear any turbo whine with this one at all. It wasn't till I rode in another at work and heard the spooling and found one more to compare with that I realized what was missing.
So I've been doing some testing. The vacuum to the valve, is good. The valve moves as it should. Unless the flapper it controls is bad, it's doing it job.
The turbo spins nicely. It's not too dirty, and doesn't have much play. I pulled the air line leading to it off and started it up and it spins like one would expect. However when the engine speed is increased, I didn't notice any difference in the Turbo's RPM's. I didn't notice any leaks from the intake or lines from the turbo to the intake. I pulled the sensor out of the intake to check for boost pressure, and got vacuum instead.
So needless to say, it seems as though my turbo is shot. I'd rather not spend $600 for a new one, and the cheapest I've found one used is $350, at least it was a -8.
Does anyone have any other ideas to try? I'm pretty handy with wrenches. I've rebuilt two 6.2's, several 350's, and a few other motors and have converted a few trucks to diesel as well. I found a rebuild kit for my turbo for $65 with shipping, but after seeing it operate tonight, I'm not sure it would help.
I should note this truck has 197K, so it might be time to change the turbo and be done with it.
Any and all thoughts are appreciated, as long as they aren't trying to convince me to throw a 454 or Cummin's under the hood. (I have friends that think I'm made of money, even though I prove often how I'm not.)
Thanks in advance!
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