460 smoking under deceleration - Ford Truck Enthusiasts Forums
 

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1987 - 1996 F150 & Larger F-Series Trucks
Log In 


1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

460 smoking under deceleration

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-31-2014, 07:57 PM
bludog bludog is offline
New User
 
Join Date: Jul 2014
Posts: 10
bludog is starting off with a positive reputation.
460 smoking under deceleration

I have a 1993 ford f-350 crew cab 4x4 5speed 181,xxx miles oil change every 3,000 miles since new. When I am deceleration it puffs smoke. If I hold the throttle open just a hair it doesn't smoke. It does not smoke any other time. No smoke at idle or wide open. runs great engine runs very smooth and quite. No blow by I am thinking its the valve seals Since it does it under high vacuum. I was going to replace the valve seals this weekend should I or am I wasting my time.
Reply With Quote
  #2  
Old 07-31-2014, 08:09 PM
SuperDutyScaler's Avatar
SuperDutyScaler SuperDutyScaler is offline
Post Fiend
 
Join Date: Nov 2008
Posts: 5,999
SuperDutyScaler has a great reputation on FTE.SuperDutyScaler has a great reputation on FTE.SuperDutyScaler has a great reputation on FTE.SuperDutyScaler has a great reputation on FTE.SuperDutyScaler has a great reputation on FTE.
Sounds like the seals with that mileage and how easy it is to do just throw some new seals in and see if it stops.

galaxy S4 using IB AutoGroup
__________________

2004 F-350...kinda stock
Reply With Quote
  #3  
Old 07-31-2014, 08:40 PM
bludog bludog is offline
New User
 
Join Date: Jul 2014
Posts: 10
bludog is starting off with a positive reputation.
I would think if it was sucking it up past the rings it would have blow by.

Last edited by bludog; 07-31-2014 at 08:40 PM. Reason: spelling
Reply With Quote
  #4  
Old 08-01-2014, 10:28 AM
White 97 xlt's Avatar
White 97 xlt White 97 xlt is online now
Postmaster
 
Join Date: Aug 2005
Location: Cleveland, TN
Posts: 4,280
White 97 xlt has a superb reputationWhite 97 xlt has a superb reputationWhite 97 xlt has a superb reputationWhite 97 xlt has a superb reputationWhite 97 xlt has a superb reputationWhite 97 xlt has a superb reputationWhite 97 xlt has a superb reputationWhite 97 xlt has a superb reputationWhite 97 xlt has a superb reputationWhite 97 xlt has a superb reputationWhite 97 xlt has a superb reputation
Valve stem seals......
__________________
No matter how carefully you choose your words, they'll always end up being twisted by others!
1993 Thunderbird LX 3.8L AOD.
1997 Explorer XLT 4X2 4.0L SOHC 5R55E
1997 F-250 HD Super cab, long bed, 5.8L, E4OD.
Reply With Quote
  #5  
Old 08-01-2014, 12:05 PM
ArdWrknTrk ArdWrknTrk is offline
pedant
 
Join Date: Jan 2008
Location: EXTREME southwest CT
Posts: 21,841
ArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputation
x4

You might want to check for sloppy guides while you have the springs and keepers off.
__________________
Jim (AKA Princess Glitzhooter)
'87 F-250
460, 4V 0-80457s, Edelbrock Intake, Saginaw PS Pump, BW 1356 4x4, 4.10 10.25", 130A 3G Alt., PMGR starter, ZF-5, - Lil' Red
http://i246.photobucket.com/albums/gg117/donjamer/FTE%20Pics/blumax500-1-1.jpgFTE Fraternity of Blue Max
Reply With Quote
  #6  
Old 08-02-2014, 08:17 AM
bludog bludog is offline
New User
 
Join Date: Jul 2014
Posts: 10
bludog is starting off with a positive reputation.
I put valve seals in the drivers side they all looked good. When I got to the passanger side I noticed all the plugs had crusty dried up oil on them and the #6 cylinder has 25 psi. What can go wrong in one cylinder and cause one side to burn oil? the drivers side plugs are clean.
Reply With Quote
  #7  
Old 08-02-2014, 08:20 AM
bludog bludog is offline
New User
 
Join Date: Jul 2014
Posts: 10
bludog is starting off with a positive reputation.
I'm going to check the compression again. It was getting late last night I could have not done something right. also what is strange the truck never missed idle perfect.
Reply With Quote
  #8  
Old 08-02-2014, 08:23 AM
ArdWrknTrk ArdWrknTrk is offline
pedant
 
Join Date: Jan 2008
Location: EXTREME southwest CT
Posts: 21,841
ArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputationArdWrknTrk has a superb reputation
#6 is the second plug on the drivers side...
If the passenger side has more sludge it is likely because fresh air is drawn in through the filler and the PCV is bringing vapor up through the passenger valve cover.
Glad you are going to check again.
25 psi is bad, very bad.

Last edited by ArdWrknTrk; 08-02-2014 at 08:38 AM. Reason: did not see reply in time
Reply With Quote
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
1999 V10 Oil Smoking 69_Eliminator Modular V10 (6.8l) 22 05-25-2015 10:12 AM
Smoke questions Bigbeam Pre-Power Stroke Diesel (7.3L IDI & 6.9L) 2 12-09-2014 05:23 PM
Rough Idle when Warm/Stutter When Decelerating andest3 Super Duty & Heavy Duty 0 10-03-2014 12:07 AM
White smoke on deceleration jac3i 1999 - 2003 7.3L Power Stroke Diesel 2 05-26-2014 10:37 PM
Smoke on deceleration chris1911 1967 - 1972 F-100 & Larger F-Series Trucks 13 09-17-2013 10:42 AM


Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1987 - 1996 F150 & 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump



All times are GMT -5. The time now is 12:57 AM.

 

Advertising - Terms of Use - Privacy Statement - Terms of Service - 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