Giant sucking sound............... - Ford Powerstroke Diesel Forum
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Old 12-12-2007, 08:13 PM
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Giant sucking sound...............

I'm new to my 96 F250 PSD. I admit I haven't driven a diesel since my IH Scout/Nissan turbo coffeegrinder days. I test-drove 6 different TD's, all big 3 makes, and all drove (and sounded differently.<P>I lucked out and found an old-school driver and diesel mechanic in town, and had all the fluids/filters etc. changed in this new-to-me rig. He asked me today if I heard a rushing-air type sound in operation. Well, not knowing what a PSD is 'sposed to sound like, I said "nope". I drove it home, and sure enough, I hear an air-rush sound from the engine compartment. He said pick-up and drivability were both below par, as well (after all filters/fluids changed), and suspects an air leak in the intercooler, a vacuum leak, etc.<P>Anyone had a similar experience with their 7.3 PSD? Thanks for your assistance. She's going in Friday and Mr. Mechanic is going to "smoke test" the intake system, hunting for leaks.

Mike
Central MA
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Old 12-12-2007, 08:18 PM
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The rush air sound is the turbo most likely. Sounds like you have a shady mechanic. 97 and earlier Powerstrokes don't have intercoolers and your sig says B-O-N-E stock. The below par pickup is most likely turbo lag.
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Old 12-12-2007, 08:18 PM
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I dont know what to say about your "old school mechanic"


BUT




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Old 12-12-2007, 08:24 PM
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Quote:
Originally Posted by 2005F250 View Post
The rush air sound is the turbo most likely. Sounds like you have a shady mechanic. 97 and earlier Powerstrokes don't have intercoolers and your sig says B-O-N-E stock. The below par pickup is most likely turbo lag.
It does handle differently "off the line" compared to Dodge & Chevy/GMC's I test drove. I chalked it up to different engines, etc. Throttle response is markedly different from the other 3 makes, as well.

Wouldn't the turbo have a slight "whine" sound to it? No such here.

Are there many vacuum lines in this thing? Maybe vacuum pump leaking?

Hmmmmmmmmmm...........is there an "aftercooler" in the line, someplace? Maybe I misheard/misquoted him.

Mike
Way Noobian
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Old 12-12-2007, 08:30 PM
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No type of air cooler comes on these trucks. If you have one, Your truck is not B-O-N-E stock. What trucks are you trying to compare to?
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Old 12-12-2007, 08:35 PM
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Send a message via AIM to rufushusky
Do the OBS have the EBPV? Could that be it?

By the by where are ya in Mass?
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Old 12-12-2007, 08:36 PM
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If there is a problem most likely it's a turbo boot.
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Old 12-12-2007, 08:37 PM
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It is possible that the EBPV is stuck closed, It could make a sound like your describing, and it would also effect your performance and EGT's ALOT!
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Old 12-12-2007, 08:42 PM
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OK, the ABPV! Saw a post regarding a plug that I can disconnect without ensuing mayhem. I'll try that in the a.m. You guys (up all nite like me?) are the aces!

I'm uptown Athol, MA BTW.

Mike
Learning slowly to speak PSD.
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Old 12-12-2007, 08:43 PM
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Originally Posted by msm618 View Post
OK, the ABPV! Saw a post regarding a plug that I can disconnect without ensuing mayhem. I'll try that in the a.m. You guys (up all nite like me?) are the aces!

I'm uptown Athol, MA BTW.

Mike
Learning slowly to speak PSD.
Yup, its late - EBPV (I knew that! My fingerz didn't!)
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