460 smoking under deceleration - Ford Truck Enthusiasts Forums



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
 
 
 
Thread Tools Search this Thread
  #1  
Old 07-31-2014, 07:57 PM
bludog bludog is offline
New User
Thread Starter
 
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 online now
Post Fiend
 
Join Date: Nov 2008
Posts: 6,575
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
Reply With Quote
  #3  
Old 07-31-2014, 08:40 PM
bludog bludog is offline
New User
Thread Starter
 
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: 4,509
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......
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: 23,588
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.
Reply With Quote
  #6  
Old 08-02-2014, 08:17 AM
bludog bludog is offline
New User
Thread Starter
 
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
Thread Starter
 
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: 23,588
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

Related Topics
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
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
1998 f150 4.6 triton 2v smoking SCRebel 1997 - 2003 F150 15 07-21-2013 08:28 PM


Go Back   Ford Truck Enthusiasts Forums >

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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump


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