Knock under left foot - FSB Forums
Register Home Forums Active Topics Photo Gallery All Albums Mark Forums Read Auto EscrowInsurance FSB Store
FullsizeBronco.com is the premier Ford Bronco Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
Old 11-13-2012, 01:43 PM   #1
InsanePyro
Junkyard Rat
 
InsanePyro's Avatar
 
Join Date: Oct 2012
Location: Oconomowoc, WI
Posts: 1,483
iTrader: (0)
Bronco Info: '89 Bronco XLT. Front clip swap. 351 w/ C6. 4" lift. 33x10.5x15 BFG Mud Terrains
Knock under left foot

I have a strong knock coming from what feel like right below my left foot. Goes away when I hit/tap the brakes. Usually increases in strength and sound with speed. What I find incredibly odd (and worrysome) is it seems to have gotten softer after I put seafoam in the oil yesterday. I've had a few friends with me and hear it and none of them say its a engine knock. I've looked under the Bronco a few times and nothing seems out of place...I've rotated the front driveshaft by hand and I didn't feel any bad spots....very smooth...I was thinking maybe a hub is stuck but I don't know what to look for if I were to pull it. Ideas?
__________________
'89 Bronco, New roller rocker 351 bolted to a c6 sitting on 33" Mud Terrains that can tow your Kia, your boat and my boat

Quote:
Originally Posted by BikerPepe
Insane... you are aptly named.
Quote:
Originally Posted by TheUnforgiven
You are a ****in' pollock. It's 10 seconds of math. Christ.
InsanePyro is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-13-2012, 01:47 PM   #2
TheUnforgiven
Dr. Brian & Mr. Unfer
 
TheUnforgiven's Avatar
 
Join Date: Aug 2004
Location: Oswego, Illinois
Posts: 18,337
iTrader: (10)
Bronco Info: 2006 Kia Spectra
it's in your mind that the sound changed since you put seafoam in the oil.

it's a bad radius arm bushing.
__________________
2006 Kia Spectra 4 banger/5 speed that tows a 14ft boat while getting better gas mileage than any of your broncos could ever dream of getting.

Quote:
Originally Posted by "Bronco" John Galt View Post
New nuts are in the plan.
"Kids, they see the good in everything and through their eyes, they open ours." - Hank Davis
TheUnforgiven is offline   Reply With Quote
Old 11-13-2012, 01:52 PM   #3
InsanePyro
Junkyard Rat
 
InsanePyro's Avatar
 
Join Date: Oct 2012
Location: Oconomowoc, WI
Posts: 1,483
iTrader: (0)
Bronco Info: '89 Bronco XLT. Front clip swap. 351 w/ C6. 4" lift. 33x10.5x15 BFG Mud Terrains
No I'm not even joking...its nowhere near as loud or hard as it used to be...but I'll go look at the bushings...I saw something about that while searching but it just didn't seem right so I made a thread...will I need a alignment badly or will the Bronco still be drivable after this? I can live with it pulling alittle....but if it totally messes with it the bushings may have to wait as I can in no way afford an alignment
__________________
'89 Bronco, New roller rocker 351 bolted to a c6 sitting on 33" Mud Terrains that can tow your Kia, your boat and my boat

Quote:
Originally Posted by BikerPepe
Insane... you are aptly named.
Quote:
Originally Posted by TheUnforgiven
You are a ****in' pollock. It's 10 seconds of math. Christ.
InsanePyro is offline   Reply With Quote
Old 11-13-2012, 01:53 PM   #4
defcon5
Registered User
 
defcon5's Avatar
 
Join Date: Aug 2003
Location: Albany, Oregon
Posts: 1,155
iTrader: (2)
Bronco Info: 1992 XLT 5.8, SAS 8 inches and Tons
Quote:
Originally Posted by TheUnforgiven View Post
it's in your mind that the sound changed since you put seafoam in the oil.

it's a bad radius arm bushing.

What he said. It's the placenta affect
__________________
1992 Bronco XLT, 351w. 8 inch lift SAS on tons!

http://s1334.photobucket.com/
defcon5 is offline   Reply With Quote
Old 11-13-2012, 01:56 PM   #5
TheUnforgiven
Dr. Brian & Mr. Unfer
 
TheUnforgiven's Avatar
 
Join Date: Aug 2004
Location: Oswego, Illinois
Posts: 18,337
iTrader: (10)
Bronco Info: 2006 Kia Spectra
Quote:
Originally Posted by defcon5 View Post
What he said. It's the placenta affect
you mean placebo right?

Pyro chill....out....deep breaths. the bushings are an easy fix.

anytime you change out suspension/steering parts you should get the alignment checked at the very least. that's why you inspect ALL the parts, replace whats needed BEFORE you get an alignment.
__________________
2006 Kia Spectra 4 banger/5 speed that tows a 14ft boat while getting better gas mileage than any of your broncos could ever dream of getting.

Quote:
Originally Posted by "Bronco" John Galt View Post
New nuts are in the plan.
"Kids, they see the good in everything and through their eyes, they open ours." - Hank Davis
TheUnforgiven is offline   Reply With Quote
Old 11-13-2012, 01:59 PM   #6
InsanePyro
Junkyard Rat
 
InsanePyro's Avatar
 
Join Date: Oct 2012
Location: Oconomowoc, WI
Posts: 1,483
iTrader: (0)
Bronco Info: '89 Bronco XLT. Front clip swap. 351 w/ C6. 4" lift. 33x10.5x15 BFG Mud Terrains
Eh I'm just a little freaked by the Bronco right now because my dad is helping me pay $3K for a truck that seems to be making a new noise everyday

As long as I got you guys here I got one more question...I'm getting that white sludgy crap on my oil cap...is that just a bad cap or something? Nothing on the dipstick or anything just the cap
__________________
'89 Bronco, New roller rocker 351 bolted to a c6 sitting on 33" Mud Terrains that can tow your Kia, your boat and my boat

Quote:
Originally Posted by BikerPepe
Insane... you are aptly named.
Quote:
Originally Posted by TheUnforgiven
You are a ****in' pollock. It's 10 seconds of math. Christ.
InsanePyro is offline   Reply With Quote
Old 11-13-2012, 02:01 PM   #7
TheUnforgiven
Dr. Brian & Mr. Unfer
 
TheUnforgiven's Avatar
 
Join Date: Aug 2004
Location: Oswego, Illinois
Posts: 18,337
iTrader: (10)
Bronco Info: 2006 Kia Spectra
Its not a big deal. i saw that A LOT in the winter when i was wrenching for a living. My car did it too when i was not highway driving.

Go change the oil, the pcv valve (with a Ford valve) and stop freaking out.

Get used to noises that come and go, you're driving a truck that is 23 YEARS old....and get used to fixing your own shit, or it's going to put you in the poorhouse.
__________________
2006 Kia Spectra 4 banger/5 speed that tows a 14ft boat while getting better gas mileage than any of your broncos could ever dream of getting.

Quote:
Originally Posted by "Bronco" John Galt View Post
New nuts are in the plan.
"Kids, they see the good in everything and through their eyes, they open ours." - Hank Davis
TheUnforgiven is offline   Reply With Quote
Old 11-13-2012, 02:07 PM   #8
InsanePyro
Junkyard Rat
 
InsanePyro's Avatar
 
Join Date: Oct 2012
Location: Oconomowoc, WI
Posts: 1,483
iTrader: (0)
Bronco Info: '89 Bronco XLT. Front clip swap. 351 w/ C6. 4" lift. 33x10.5x15 BFG Mud Terrains
Oh I'm fine with fixing stuff...my S10 Blazer taught me that.

As for the PCV valve...is Motorcraft Ford's only part brand? Or are there others?
__________________
'89 Bronco, New roller rocker 351 bolted to a c6 sitting on 33" Mud Terrains that can tow your Kia, your boat and my boat

Quote:
Originally Posted by BikerPepe
Insane... you are aptly named.
Quote:
Originally Posted by TheUnforgiven
You are a ****in' pollock. It's 10 seconds of math. Christ.
InsanePyro is offline   Reply With Quote
Old 11-13-2012, 02:07 PM   #9
defcon5
Registered User
 
defcon5's Avatar
 
Join Date: Aug 2003
Location: Albany, Oregon
Posts: 1,155
iTrader: (2)
Bronco Info: 1992 XLT 5.8, SAS 8 inches and Tons
Quote:
Originally Posted by TheUnforgiven View Post
you mean placebo right?

Pyro chill....out....deep breaths. the bushings are an easy fix.

anytime you change out suspension/steering parts you should get the alignment checked at the very least. that's why you inspect ALL the parts, replace whats needed BEFORE you get an alignment.
No I really mean the placenta affect.
You know your at the hospital and you and your wife are knee deep in placenta, and you perceive that a baby is going to ruin your life when in reality your life is just getting started

Just like his knock, he is all worried when in fact there is nothing to be worried about.
__________________
1992 Bronco XLT, 351w. 8 inch lift SAS on tons!

http://s1334.photobucket.com/
defcon5 is offline   Reply With Quote
Old 11-13-2012, 02:12 PM   #10
TheUnforgiven
Dr. Brian & Mr. Unfer
 
TheUnforgiven's Avatar
 
Join Date: Aug 2004
Location: Oswego, Illinois
Posts: 18,337
iTrader: (10)
Bronco Info: 2006 Kia Spectra
I can't say i've ever heard that.....you're a strange fawker defcon.

Pyro the Ford pcv valve is the best you'll find. the aftermarkets are junk.
__________________
2006 Kia Spectra 4 banger/5 speed that tows a 14ft boat while getting better gas mileage than any of your broncos could ever dream of getting.

Quote:
Originally Posted by "Bronco" John Galt View Post
New nuts are in the plan.
"Kids, they see the good in everything and through their eyes, they open ours." - Hank Davis
TheUnforgiven is offline   Reply With Quote
Old 11-13-2012, 02:15 PM   #11
defcon5
Registered User
 
defcon5's Avatar
 
Join Date: Aug 2003
Location: Albany, Oregon
Posts: 1,155
iTrader: (2)
Bronco Info: 1992 XLT 5.8, SAS 8 inches and Tons
Quote:
Originally Posted by TheUnforgiven View Post
I can't say i've ever heard that.....you're a strange fawker defcon.

Pyro the Ford pcv valve is the best you'll find. the aftermarkets are junk.
I just made it up, but thanks for the compliment
__________________
1992 Bronco XLT, 351w. 8 inch lift SAS on tons!

http://s1334.photobucket.com/
defcon5 is offline   Reply With Quote
Old 11-13-2012, 02:16 PM   #12
TheUnforgiven
Dr. Brian & Mr. Unfer
 
TheUnforgiven's Avatar
 
Join Date: Aug 2004
Location: Oswego, Illinois
Posts: 18,337
iTrader: (10)
Bronco Info: 2006 Kia Spectra
o_O I think you should lay off the sauce.
__________________
2006 Kia Spectra 4 banger/5 speed that tows a 14ft boat while getting better gas mileage than any of your broncos could ever dream of getting.

Quote:
Originally Posted by "Bronco" John Galt View Post
New nuts are in the plan.
"Kids, they see the good in everything and through their eyes, they open ours." - Hank Davis
TheUnforgiven is offline   Reply With Quote
Old 11-13-2012, 02:30 PM   #13
InsanePyro
Junkyard Rat
 
InsanePyro's Avatar
 
Join Date: Oct 2012
Location: Oconomowoc, WI
Posts: 1,483
iTrader: (0)
Bronco Info: '89 Bronco XLT. Front clip swap. 351 w/ C6. 4" lift. 33x10.5x15 BFG Mud Terrains
So motorcraft then? Online store for both Advance and NAPA don't have them unless I'm blind...please don't tell me I have to go to Oreillys
__________________
'89 Bronco, New roller rocker 351 bolted to a c6 sitting on 33" Mud Terrains that can tow your Kia, your boat and my boat

Quote:
Originally Posted by BikerPepe
Insane... you are aptly named.
Quote:
Originally Posted by TheUnforgiven
You are a ****in' pollock. It's 10 seconds of math. Christ.
InsanePyro is offline   Reply With Quote
Old 11-13-2012, 02:37 PM   #14
TheUnforgiven
Dr. Brian & Mr. Unfer
 
TheUnforgiven's Avatar
 
Join Date: Aug 2004
Location: Oswego, Illinois
Posts: 18,337
iTrader: (10)
Bronco Info: 2006 Kia Spectra
Just go to your local Ford dealer and buy one.
__________________
2006 Kia Spectra 4 banger/5 speed that tows a 14ft boat while getting better gas mileage than any of your broncos could ever dream of getting.

Quote:
Originally Posted by "Bronco" John Galt View Post
New nuts are in the plan.
"Kids, they see the good in everything and through their eyes, they open ours." - Hank Davis
TheUnforgiven is offline   Reply With Quote
Old 11-13-2012, 04:35 PM   #15
hizootiemizark
Registered User
 
hizootiemizark's Avatar
 
Join Date: Jul 2011
Posts: 576
iTrader: (0)
Bronco Info: 95 XLT 5.0
Check ROCKAUTO.COM they carry a lot of Motorcraft stuff with very good prices.
hizootiemizark is offline   Reply With Quote
Old 11-13-2012, 04:48 PM   #16
KTO17
Registered User
 
KTO17's Avatar
 
Join Date: Feb 2009
Location: Alpharetta, GA
Posts: 137
iTrader: (1)
Bronco Info: 1995 C-350 9 passenger bus, 7.5L, Auto, 225K miles, 8000# Winch, 285x75x16
Its most likely as TheUnforgiven said, raidus arm bushing. Driving conditions change how intense it is. A badly warped rotor and a bad bushing will make you think the whole thing is about to blow! Brakes draging on a slightly warped rotor will give you a constant vibration. Its directly under your left foot because the closest body mount is there and its transfering through that to the body.
__________________
Doug
1995 Centurion C-350 4-Door Bronco
1965 Buick Rivera-401 Nailhead V8-Sunday Driver
1961 Shasta Deluxe 19' Camper
KTO17 is offline   Reply With Quote
Old 11-13-2012, 04:56 PM   #17
351w500
Ok, Ill admit it's Vagish
 
351w500's Avatar
 
Join Date: Dec 2007
Location: Fairfield ca.
Posts: 10,063
iTrader: (4)
Bronco Info: '90 xlt 351w E40D Truetrac I GOT ROLLER ROCKERS !
Dayum Defcon !!! ive been called bat shyt crazy before, You might be Super twin turbo injected bat shit crazy with a reverse spiral twist !
351w500 is offline   Reply With Quote
Old 11-13-2012, 05:09 PM   #18
defcon5
Registered User
 
defcon5's Avatar
 
Join Date: Aug 2003
Location: Albany, Oregon
Posts: 1,155
iTrader: (2)
Bronco Info: 1992 XLT 5.8, SAS 8 inches and Tons
Quote:
Originally Posted by 351w500 View Post
Dayum Defcon !!! ive been called bat shyt crazy before, You might be Super twin turbo injected bat shit crazy with a reverse spiral twist !
Oh shit that made me laugh, thanks

On a more serious note, when I did my pan gasket and other stuff, apparently I did not get the motor set back down like it was supposed to be. Anyway the drivers side motor was touching the firewall, and drove me crazy. It was not so much a knock but just reverberating throughout the whole truck.
__________________
1992 Bronco XLT, 351w. 8 inch lift SAS on tons!

http://s1334.photobucket.com/
defcon5 is offline   Reply With Quote
Old 11-13-2012, 06:42 PM   #19
TheUnforgiven
Dr. Brian & Mr. Unfer
 
TheUnforgiven's Avatar
 
Join Date: Aug 2004
Location: Oswego, Illinois
Posts: 18,337
iTrader: (10)
Bronco Info: 2006 Kia Spectra
Quote:
Originally Posted by KTO17 View Post
Its most likely as TheUnforgiven said, raidus arm bushing. Driving conditions change how intense it is. A badly warped rotor and a bad bushing will make you think the whole thing is about to blow! Brakes draging on a slightly warped rotor will give you a constant vibration. Its directly under your left foot because the closest body mount is there and its transfering through that to the body.
no they won't.
__________________
2006 Kia Spectra 4 banger/5 speed that tows a 14ft boat while getting better gas mileage than any of your broncos could ever dream of getting.

Quote:
Originally Posted by "Bronco" John Galt View Post
New nuts are in the plan.
"Kids, they see the good in everything and through their eyes, they open ours." - Hank Davis
TheUnforgiven is offline   Reply With Quote
Old 11-13-2012, 06:58 PM   #20
Steve83
Registered User
 
Steve83's Avatar
 
Join Date: Jul 2003
Location: Memphis, TN
Posts: 36,263
iTrader: (101)
Bronco Info: '83 VIN & title on '93 frame/body w/'95 4.9L & EB paint
It almost has to be the RA bushings. Click this & read the caption:



Regardless of what you find there, check the engine mounts & the #1 crossmember rivets while you're under it.

.
__________________
Walk softly & carry a BIG SIX ! ! !

. .
Steve83 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  FSB Forums > Bronco Discussions > Noobie Bronco Tech Questions. Flame free zone!


Thread Tools
Display Modes

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 Off
Forum Jump


All times are GMT -4. The time now is 06:13 PM.


2003-2009 FullSizeBronco.com. All rights reserved