Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1973 - 1979 F-100 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 11-08-2012, 10:45 AM
SuperDuty93's Avatar
SuperDuty93 SuperDuty93 is offline
Posting Guru
 
Join Date: Jun 2011
Location: Southern California
Posts: 1,631
SuperDuty93 is starting off with a positive reputation.
Engine making noise?

So recently I've noticed that in the morning when I go to start my 390 (cold start), it fires right up BUT it makes a almost nocking type noise.... It goes duh duh duh ...... Duh duh duh ....... It has a few second pause in between but it also seems to stop once warmed up. Its almost a deep exhaust decible noise doesnt really sound like nocking on metal. I really hope it isn't a bad knock :/ anyone have any ideas?
__________________
The "Blue Ghost" 1974 Highboy with a 428 DD
1964 Falcon Sprint-347 Stroker-4 speed- Will be show car and racer for my company im starting.
Follow me on Instagram @blueghostindustries
1959 F100 4x4 Conversion + 12 Valve Cummins
Its only takes time and money, lots of it -.-
Reply With Quote
  #2  
Old 11-08-2012, 02:32 PM
SOB Racing's Avatar
SOB Racing SOB Racing is offline
Senior User
 
Join Date: Sep 2007
Posts: 288
SOB Racing is starting off with a positive reputation.
Try adding some thick oil like lucas oil additive it will help keep upper parts lubricated when motor sits. good place to start.
Reply With Quote
  #3  
Old 11-08-2012, 04:22 PM
SuperDuty93's Avatar
SuperDuty93 SuperDuty93 is offline
Posting Guru
 
Join Date: Jun 2011
Location: Southern California
Posts: 1,631
SuperDuty93 is starting off with a positive reputation.
Already ahead of ya. I have the Lucas stabalizer in there with my last oil change. Few weeks or maybe a month ago. Um I'm going to check my oil level to see if I needto add any. Should I put in a bottle of break in cam oil stuff from Lucas every oil change cuz I heard it has zinc in it or something like that Whig is good for flat tappet cams and I have a newer cam in it and don't wana ruin it ( I broke it in like 8 months ago).?
__________________
The "Blue Ghost" 1974 Highboy with a 428 DD
1964 Falcon Sprint-347 Stroker-4 speed- Will be show car and racer for my company im starting.
Follow me on Instagram @blueghostindustries
1959 F100 4x4 Conversion + 12 Valve Cummins
Its only takes time and money, lots of it -.-
Reply With Quote
  #4  
Old 11-08-2012, 10:16 PM
SuperDuty93's Avatar
SuperDuty93 SuperDuty93 is offline
Posting Guru
 
Join Date: Jun 2011
Location: Southern California
Posts: 1,631
SuperDuty93 is starting off with a positive reputation.
ok well it was low on oil but even after i put a quart or 2 in and drove it, its still there. I got under the truck and i cant tell if its from the engine or mufflers. To me i think its coming from the mufflers or the X pipe but its to damn loud to hear haha
__________________
The "Blue Ghost" 1974 Highboy with a 428 DD
1964 Falcon Sprint-347 Stroker-4 speed- Will be show car and racer for my company im starting.
Follow me on Instagram @blueghostindustries
1959 F100 4x4 Conversion + 12 Valve Cummins
Its only takes time and money, lots of it -.-
Reply With Quote
  #5  
Old 11-09-2012, 10:06 AM
SOB Racing's Avatar
SOB Racing SOB Racing is offline
Senior User
 
Join Date: Sep 2007
Posts: 288
SOB Racing is starting off with a positive reputation.
If it goes away after warm up you might want to pull valve covers and check rocker arm to push rod clearance.
Reply With Quote
  #6  
Old 11-09-2012, 11:17 AM
SuperDuty93's Avatar
SuperDuty93 SuperDuty93 is offline
Posting Guru
 
Join Date: Jun 2011
Location: Southern California
Posts: 1,631
SuperDuty93 is starting off with a positive reputation.
I just you tubed engine knocks to see what it would sound like and what I'm talking about sounds nothing like what was on you tube. Anyone have a video in particular that should sound like a knock in a 390?
__________________
The "Blue Ghost" 1974 Highboy with a 428 DD
1964 Falcon Sprint-347 Stroker-4 speed- Will be show car and racer for my company im starting.
Follow me on Instagram @blueghostindustries
1959 F100 4x4 Conversion + 12 Valve Cummins
Its only takes time and money, lots of it -.-
Reply With Quote
  #7  
Old 11-09-2012, 11:29 AM
Jimmyrig Jimmyrig is offline
Senior User
 
Join Date: Nov 2012
Posts: 238
Jimmyrig is starting off with a positive reputation.
Do you have catalytic converters on it? If so it could be a busted cat. Otherwise I'd go with valves. I had a strange knocking in my cherokee once. A month later I ended up with my rods and crank all over the road...
Reply With Quote
  #8  
Old 11-09-2012, 11:34 AM
SuperDuty93's Avatar
SuperDuty93 SuperDuty93 is offline
Posting Guru
 
Join Date: Jun 2011
Location: Southern California
Posts: 1,631
SuperDuty93 is starting off with a positive reputation.
Quote:
Originally Posted by Jimmyrig View Post
Do you have catalytic converters on it? If so it could be a busted cat. Otherwise I'd go with valves. I had a strange knocking in my cherokee once. A month later I ended up with my rods and crank all over the road...
But the thing is I'm not so sure it's a knock. Cuz it seems to be coming from the flow through the exhaust and the engine doesn't seem to be making the noise. And I don't have cats either. Umm ima try to identify the source again when I get home.
__________________
The "Blue Ghost" 1974 Highboy with a 428 DD
1964 Falcon Sprint-347 Stroker-4 speed- Will be show car and racer for my company im starting.
Follow me on Instagram @blueghostindustries
1959 F100 4x4 Conversion + 12 Valve Cummins
Its only takes time and money, lots of it -.-
Reply With Quote
  #9  
Old 11-09-2012, 11:40 AM
Jimmyrig Jimmyrig is offline
Senior User
 
Join Date: Nov 2012
Posts: 238
Jimmyrig is starting off with a positive reputation.
pick up a cheap stethoscope on your way home. Start at the valve covers and work down then back. Might be loud as hell but its like finding a stud in a wall.
Reply With Quote
  #10  
Old 11-09-2012, 11:48 AM
SuperDuty93's Avatar
SuperDuty93 SuperDuty93 is offline
Posting Guru
 
Join Date: Jun 2011
Location: Southern California
Posts: 1,631
SuperDuty93 is starting off with a positive reputation.
Quote:
Originally Posted by Jimmyrig View Post
pick up a cheap stethoscope on your way home. Start at the valve covers and work down then back. Might be loud as hell but its like finding a stud in a wall.
Dads a doctor so I already have a few and I think I can rule out a tick or engine knock cuz every you tube video I've watched is. Completely different then what I'm hearing. I think it has to do with my X pipe sobim 95% sure it's an exhaust sound from my new system..... I'll get the scope out and listen just in case though .
__________________
The "Blue Ghost" 1974 Highboy with a 428 DD
1964 Falcon Sprint-347 Stroker-4 speed- Will be show car and racer for my company im starting.
Follow me on Instagram @blueghostindustries
1959 F100 4x4 Conversion + 12 Valve Cummins
Its only takes time and money, lots of it -.-
Reply With Quote
  #11  
Old 11-09-2012, 11:58 AM
smokenchoken's Avatar
smokenchoken smokenchoken is offline
Posting Guru
 
Join Date: May 2012
Location: peru kansas
Posts: 1,385
smokenchoken is gaining momentum as a positive member of FTE.smokenchoken is gaining momentum as a positive member of FTE.
Eli Hopkins
9 times out of 10 its a blown exhaust gasket or even an exhaust donut i betcha thats what it is since its very common with all fe's
__________________
smoke n choken out the neighbors with wonderful tire smoke -Eli Hopkins
Some must be sacrificed so that others may live!
Reply With Quote
Old 11-09-2012, 11:58 AM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1973 - 1979 F-100 & Larger F-Series Trucks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Compression Test Eric Kropp Pre-Power Stroke Diesel (7.3L IDI & 6.9L) 10 08-10-2014 03:56 PM
Dash acting up Aetic 1994.5 - 1997 7.3L Power Stroke Diesel 0 05-29-2014 09:23 PM
Duh! I fogot about the LED's underthebridgejim 1948 - 1956 F1, F100 & Larger F-Series Trucks 10 01-19-2013 06:47 AM
How much offroading can you do on a stock F-150? TexasKingRancher 2009+ F150 13 11-16-2012 12:10 AM
Head-scratcher Starting Problem Lee_R 1987 - 1996 F150 & Larger F-Series Trucks 7 08-26-2012 11:37 PM



All times are GMT -5. The time now is 08:50 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup