Loud clunk at shutdown - Ford Powerstroke Diesel Forum
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post #1 of 26 Old 09-03-2013, 03:24 PM Thread Starter
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Loud clunk at shutdown

I don't know if this is normal or not. Ever since I the truck it's fine it, but it's getting louder and harder.

When I shut the truck off, there's a loud clunk, almost sounding like something is loose and just flopped over. It's not a metallic clunk, more a soft sounding, but I only hear out and I turn the truck off.

Tonight, it did uhh and the truck pitched really hard to the passenger side, like a torque twist, and the clunk was the loudest it's ever been.

Is that normal for a diesel?


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post #2 of 26 Old 09-03-2013, 04:21 PM
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No, no it's not. With the help of someone else, try and figure out if it's an internal "clunk", or external. The only internal "clunk" I've heard was a busted crankshaft, but it didn't get progressively louder, it was just loud.

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post #3 of 26 Old 09-04-2013, 03:45 AM Thread Starter
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Quote:
Originally Posted by Macon View Post
No, no it's not. With the help of someone else, try and figure out if it's an internal "clunk", or external. The only internal "clunk" I've heard was a busted crankshaft, but it didn't get progressively louder, it was just loud.
Yeah the truck runs too good for that...



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1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes
Cosmetic: Bushwhacker fender flares. Moto Metal 951 18's wrapped with Nitto Trail Grapplers 295/70/18
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post #4 of 26 Old 09-06-2013, 01:05 PM
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NO if it was normal nobody would buy one, lol!!! Kinda hard to diagnose a sound over the internet. Sounds motor related but I would want to figure it out before to much longer. How does it drive?

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post #5 of 26 Old 09-07-2013, 06:27 AM Thread Starter
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Quote:
Originally Posted by NCHornet View Post
NO if it was normal nobody would buy one, lol!!! Kinda hard to diagnose a sound over the internet. Sounds motor related but I would want to figure it out before to much longer. How does it drive?
Read this thread I started on how it runs.

I have a buddy whose dad and grandad have almost 80 years combine experience on powerstrokes. They say my timing is out and that will continue to all the issues I'm facing

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post #6 of 26 Old 09-07-2013, 06:29 AM Thread Starter
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I had a scan gauge 2 and it said my timing was -64

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Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes
Cosmetic: Bushwhacker fender flares. Moto Metal 951 18's wrapped with Nitto Trail Grapplers 295/70/18
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post #7 of 26 Old 09-08-2013, 07:15 AM
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subscribing..mine being a 6-speed, i've experienced this for atleast, the last 2yrs. Tryn to think if its been that way since i bought it (3yrs) or when the turbo went and have had all sorts of noises since (2yrs ago).

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #8 of 26 Old 09-08-2013, 01:52 PM Thread Starter
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Ok.... bad news....

Number one, my turbo has started making a very loud howl at 60mph and above when under load. I used to have slight surge when under load at 70 but now it's a howl!

Number two, it's struggling to hold speed at 2k rpms.
The best I can come up with is that the motor is "tight". My accelerator it's stiff and the motor has to rev high to get up to speed and keep it. Plus It shudders. It really feels like my brakes are on and I'm pushing against them. But I have just replaced the brakes all around....

I haven't checked the injector timing yet but I'm thinking its not gonna be that easy.....


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1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes
Cosmetic: Bushwhacker fender flares. Moto Metal 951 18's wrapped with Nitto Trail Grapplers 295/70/18
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post #9 of 26 Old 09-08-2013, 05:45 PM
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Could it be your transmission????

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post #10 of 26 Old 09-08-2013, 05:56 PM Thread Starter
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I'm really hoping it isn't.....

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1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes
Cosmetic: Bushwhacker fender flares. Moto Metal 951 18's wrapped with Nitto Trail Grapplers 295/70/18
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