strange noises (engine)
 

well it all started leaving the store Christmas eve night. truck was still warm, and i never get on it hard till it is warm, and i had to pull out of the lot kinda quick...well WOT. i had my drivers window open and i heard a strange whistling/whining when i was at WOT. this was the first time i ever heard it.

so the next chance i get i get back on it, does the same thing. it is actually louder than the whistling of the turbo. it made the noise from 15 to 40 psi of boost, let off below 15 even 14 it wouldnt do it. now it does it at 10 psi. So whatever it is, it's getting worse...

i have a bd turbo guard on it and i removed that, still does it, cleaned my air filter thinking it was doing it, nope still doin it... all other fittings are tight on it..

it runs fine other wise, no extra smoke, good boost... i just dont get it...

if you need to know the turbo is a Phat shaft 62 from II and is 1.5 years old, and NEVER shut down hot...or over 1200* pre-turbo...

Thanks
Cody

did you physically check your turbo to check for shaft play??

yea it has some but not excessive, actually it had it from day one. my dads SPS66 has worse end play...

Pull the oil feed line and see if it's getting oil.

sounds like you have a air leak that is whistlin..........check all mounting bolts and also check all yer boot clamps

sounds like a boot has come lose, just aint poped off all the way. does it get louder with the more psi it builds? make sure all the clamps are tightened real tight

yea ill check clamps tomorrow when i have off, and yes it gets louder the more boost it makes. i hope it is something simple and it isnt the turbo...that will make me unhappy.

thanks for the help ill let yas know what i find

just keeping ya'll posted

i tightened all the intercooler clamps, checked for oil flow into turbo (good flow) and tears in the boots and nothing. now i know this truck has been in a wreck and the DS lower intercooler mount is MIA so im gonna pressureize the system tomorrow and see if i got leaks or if no noise is heard or no leaks found i know that my awesome PS62 is on its way out and if it is, it will be put through its paces lol

thanks guys,
Cody

Intake manifold bolts are another check.. You can get a good whistle out of there as well.

spray your intercooler with soapy water and build up boost while someone is watching to see if the see alot of bubbles.