Notices
1997 - 2003 F150 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage
Sponsored by:
Sponsored by: Auxito

Severe Engine knocking

Old May 1, 2007 | 03:15 PM
  #1  
shakebaker69's Avatar
shakebaker69
Thread Starter
|
New User
Joined: Nov 2006
Posts: 6
Likes: 0
Severe Engine knocking

I have a 97 F150 6 cylinder standard transmission. Today when i started it, it started making a severe knocking sound as soon as I started the truck. This increased in speed and intensity as I gave it gas. I drove it around the block and it knocked severely the entire time and louder anytime I accelerated. It would slow down when i slowed down. This started today and hadnt done this ever before. The truck has 90,000 miles and has just had a tuneup recently. Any ideas what it might be or what to do? Im taking it in tomorrow to my mechanic but would appreciate any suggestions or ideas on what I can expect the problem to be and potential costs.
Thanks for any insight.
 
Reply
Old May 1, 2007 | 03:17 PM
  #2  
Peter94's Avatar
Peter94
Postmaster
Joined: Aug 2003
Posts: 2,873
Likes: 0
From: St. Peter
Not to question your mechanical ability or anything, but did you check all of the obvious things like the oil level?
 
Reply
Old May 1, 2007 | 03:22 PM
  #3  
shakebaker69's Avatar
shakebaker69
Thread Starter
|
New User
Joined: Nov 2006
Posts: 6
Likes: 0
Well I dont have much of that ability lol but I did check the oil and it checked out ok. That was my first thought as well.
 
Reply
Old May 1, 2007 | 06:43 PM
  #4  
LxMan1's Avatar
LxMan1
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
Possibly it hydrauliced a cylinder with antifreeze and bent a rod?
 
Reply
Old May 1, 2007 | 08:07 PM
  #5  
shakebaker69's Avatar
shakebaker69
Thread Starter
|
New User
Joined: Nov 2006
Posts: 6
Likes: 0
Any estimates on about what that might cost to fix? Also should I just have it towed with it making this noise or risk doing more damage y driving it. Thanks for the input.
 
Reply
Old May 1, 2007 | 09:05 PM
  #6  
LxMan1's Avatar
LxMan1
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
Is there any antifreeze in the oil? It can be hard to diagnose a knock across the internet. Has it lost any coolant from the system?
 
Reply
Old May 1, 2007 | 11:04 PM
  #7  
BlueOvalFitter's Avatar
BlueOvalFitter
Cargo Master
Joined: Aug 2002
Posts: 2,013
Likes: 6
From: Cajun Country
Unhappy

Your lower intake gaskets have failed and let coolant into one or more cylinders and caused hydrolock.Most likely has bent a rod.I see a new engine in your future.
 
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 03:29 AM.

story-0
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-1
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-2
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-3
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-4
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-5
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-6
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-7
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-8
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-9
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE