2001 powerstroke knocking
Thread Starter
|
New User
Joined: Jun 2007
Posts: 18
Likes: 0
2001 powerstroke knocking
HELP!!! 2001 F-550 started knocking today. Wasnt running it too hard. Had 30 ft gooseneck with 200 bales straw on it. Drove 75 miles from home, starting knocking. No loss of power, bit has excessive blowby coming from oil filler tube. Drove back home and doesnt knock untill sits and idles, longer it idles the worse the knock. Anyone have any ideas?
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Sounds like bent pushrod, dropped valve, or rocker arm problem to me but don't bet the farm on it. That smoke/pressure from the oil filler tube leads me to this conclusion.
I would pull the VCs as fast as I could.
I would pull the VCs as fast as I could.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by hayfarmer550
I was hoping for a bent pushrod, but a friend of mine that has been in the mechanicin hobby for almost 50 years thought maybe a cracked piston.
If too major Im gonna replace the psd with a cummins
If too major Im gonna replace the psd with a cummins
Thread Starter
|
New User
Joined: Jun 2007
Posts: 18
Likes: 0
it looks like white or maybe blue colored smoke. It puffs, so it is definitely only one or two cylinders doing it. It was dark out when we started to diagnose it. The knonk is deep sounding almost sounds like a bent rod but that doesnt explain the smoke. Im not happy with it right now. mechanic friend thought cracked piston, he said he seen a cat d-6 knock like that and when they pulled it apart it was a cracked piston
Trending Topics
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Originally Posted by Tenn01PSD350
Wow Dan, you jumped right on that piston thing. I find it hard to believe the piston would fail. Isn't it an aluminum slug?
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Remember this thread where FN74 lost his engine?
https://www.ford-trucks.com/forums/5...-kablooey.html
https://www.ford-trucks.com/forums/5...-kablooey.html
Mountain Pass
Joined: Dec 2004
Posts: 116
Likes: 1
From: Bethlehem Ga.
I had one that did the same thing and it was a cracked piston but it was my fault I put a little starting fluid in it. when I was young and dum but it didnt show up till about 10 miles down the road. But yes a lot of blowby and mine blew alot of oil too.
