Intake gasket change - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 01-02-2008
jtfoxman's Avatar
Member
Thread Starter
 
Join Date: Jun 2005
Location: The Poconos
Posts: 891
Intake gasket change

In another post I talked about how the truck dies without me feathering the gas and how I can't find what's wrong. Well I had it at the garage today and they couldn't figure it out either. So the mechanic brought up the known problem of the intake gasket. Since once the motor warmed up it ran better, with a lower than normal idle but no foot on the gas. I'm hesitant to try this as the truck is not kicking out any lean codes. Can this gasket fail without any codes? He suggested I change the upper not the lower and see if it solves the problem if not they can do the lower then. $300 for the upper and $300 for the lower.
I'm not sure if i can change the gasket myself or how long it would take. Any suggestions? You think the mechanics right? And which gasket usually fails the upper or lower?
Reply With Quote
  #2  
Old 01-02-2008
rolsmojave3's Avatar
Level III Supporter
 
Join Date: Jun 2006
Location: Wisconsin
Posts: 2,852
Mine failed and threw no codes. Idled rough, would kill when slowing down, all the things you mentioned in your other posts. It was easy to do, it's just a matter of removing the upper intake and fuel manifold. I changed mine in about an hour and a half.
Reply With Quote
  #3  
Old 01-02-2008
racsan's Avatar
Member
 
Join Date: Sep 2006
Location: central ohio
Posts: 647
my intake gasket failure was the fuel rail gasket between the fuel rail and lower intake, i had bought the whole set so i changed it all to be safe, i also had a leaking drivers side valve cover gskt. all is good now. i spent the day on the job but i also did a compression test& tune up. remove the hood for this one, it's not too hard with help and its well worth it. you aint banging your head and you get better light to see with.
Reply With Quote
  #4  
Old 01-02-2008
jtfoxman's Avatar
Member
Thread Starter
 
Join Date: Jun 2005
Location: The Poconos
Posts: 891
Where'd you guys get the gaskets from, Ford or somewhere else?
How much did the whole set cost, or could you just get the gaskets you need?
Reply With Quote
  #5  
Old 01-02-2008
CAW's Avatar
CAW CAW is offline
Member
 
Join Date: Apr 2005
Location: southern indiana
Posts: 137
When i changed my upper gaskets i got the upper intake gaskets from ford and fuel injector o rings from an auto parts store. I think it all cost about $30?
Here is a link to a write up i did about changing the upper gaskets.

https://www.ranger-forums.com/forum2...ad.php?t=27084

Since then I have also replaced my lower and valve cover gaskets. It helped to replace the upper gaskets but my problem was finally fixed when i replaced the lower.
Reply With Quote
  #6  
Old 01-02-2008
rolsmojave3's Avatar
Level III Supporter
 
Join Date: Jun 2006
Location: Wisconsin
Posts: 2,852
I got mine from NAPA
Reply With Quote
  #7  
Old 01-02-2008
jtfoxman's Avatar
Member
Thread Starter
 
Join Date: Jun 2005
Location: The Poconos
Posts: 891
Quote:
Originally Posted by CAW
When i changed my upper gaskets i got the upper intake gaskets from ford and fuel injector o rings from an auto parts store. I think it all cost about $30?
Here is a link to a write up i did about changing the upper gaskets.

https://www.ranger-forums.com/forum2...ad.php?t=27084

Since then I have also replaced my lower and valve cover gaskets. It helped to replace the upper gaskets but my problem was finally fixed when i replaced the lower.
I read your write up when I did a search for this. It was great, I actually printed it out to guide me through it when i do it tomorrow.

Funny thing is I picked it up from the mechanic today and it drive fine so brought it home and changed the IAC and tightened down the intake bolts and it's been running great. It's supposed to get down to about 5F tonight so when I start it tomorrow I should see whether or not this did the trick. Either way I'm still changing the gaskets but I may be able to put it off a little while, or at least till it warms up a little.

No parts store have the gaskets in stock around here so I'll have to wait and see if the local Ford dealer has them in the morning.
Reply With Quote
  #8  
Old 01-03-2008
jtfoxman's Avatar
Member
Thread Starter
 
Join Date: Jun 2005
Location: The Poconos
Posts: 891
I started the truck up this morning and it ran great and idles at around 7500. ut about 12 miles on it and very smooth. I have a few errands to run so I'll see how it performs after I have to keep shutting it off and starting.
I'm still picking up the gaskets since there only $9 total from the Ford dealer. But I'll put off changing them until it warms up a little. It's 8F right now.
Reply With Quote
  #9  
Old 01-05-2008
Rockledge's Avatar
Member
 
Join Date: Nov 2006
Location: Connecticut
Posts: 479
Quote:
Originally Posted by jtfoxman
I started the truck up this morning and it ran great and idles at around 7500. ut about 12 miles on it and very smooth. I have a few errands to run so I'll see how it performs after I have to keep shutting it off and starting.
I'm still picking up the gaskets since there only $9 total from the Ford dealer. But I'll put off changing them until it warms up a little. It's 8F right now.
Do yourself a favor and pick up a new fuel rail gasket while you're at it. As I referenced in your other thread, the '97 4.0L OHV is prone to fuel rail gasket leaks. I'd even bet that the fuel rail gasket is the one your mechanic is talking about because it is specifically addressed in a TSB. (The fuel rail gasket is often referred to as an "intake" gasket).
Reply With Quote
  #10  
Old 01-07-2008
jtfoxman's Avatar
Member
Thread Starter
 
Join Date: Jun 2005
Location: The Poconos
Posts: 891
I picked up the fuel rail gasket also. So when i do go to change it I'm doing them both. The trucks been running great as of late so I'm hoping it holds out till spring, if not I'll be doing it in the cold.
Reply With Quote
  #11  
Old 01-07-2008
racsan's Avatar
Member
 
Join Date: Sep 2006
Location: central ohio
Posts: 647
the whole gasket set from autozone ran me around 70, had to get the valve cover gkts seperate, but get this, the valve cover set came with a fuel rail gskt. i wish id have tried gaskets first, i changed every sensor on the motor before i went the gasket route. i saved all my old parts, so i should be good to go for quite awhile on electrical parts. i painted my valve covers chrome while i had 'em off. wish the aftermarket would build V6 valve covers. hard to see with all the stuff on it but heres what my 4.0 looks like: Name:  Picture002.jpg
Views: 184
Size:  133.0 KB Name:  32707003.jpg
Views: 235
Size:  139.9 KB
Reply With Quote
  #12  
Old 01-07-2008
graniteguy's Avatar
Member
iTrader: (3)
 
Join Date: Jul 2005
Location: Texas
Posts: 3,221
I've heard of people spraying something around the intake. Maybe carb cleeaner. If you spray it and the idle changes, it can confirm a leak.
Reply With Quote
  #13  
Old 01-08-2008
jtfoxman's Avatar
Member
Thread Starter
 
Join Date: Jun 2005
Location: The Poconos
Posts: 891
Quote:
Originally Posted by graniteguy
I've heard of people spraying something around the intake. Maybe carb cleeaner. If you spray it and the idle changes, it can confirm a leak.
I heard this also, they say it works better on a carbed motor though. I've been having 0 problems so i'm waiting it out.
Reply With Quote
  #14  
Old 01-08-2008
04 EDGE
Unregistered User
 
Posts: n/a
works on all motors, all vacuum leaks
Reply With Quote
  #15  
Old 01-10-2008
racsan's Avatar
Member
 
Join Date: Sep 2006
Location: central ohio
Posts: 647
i tried that on mine, but my vac leak was so bad thet it didnt make any difference what i sprayed on or over the motor. i was dead convinced i had a sensor problem-until i had changed out every one and only left me with 2 options, main control computer or intake gasket leakage. kinda glad it was a gasket, what with that being a problem area, now i never have to worry about that again.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Intake manifold bolts loosen after lower gasket change? BL00DPIG 4.0L OHV & SOHC V6 Tech 7 10-06-2014 11:29 AM
Upper Intake Gasket Change jtfoxman 4.0L OHV & SOHC V6 Tech 4 08-30-2012 09:41 AM
For Sale: ranger 4.0 headgasket valve cover gasket header gasket & viton valve stem seals $10+ talkforparts Interior, Exterior, Electrical, & Misc. 0 07-20-2010 02:41 PM
Intake Manifold Gasket/Intake Manifold fordboston 4.0L OHV & SOHC V6 Tech 6 01-25-2010 10:37 PM
Oil leak after head gasket change dallas_01gt 4.0L OHV & SOHC V6 Tech 1 05-21-2009 06:27 AM


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



All times are GMT -6. The time now is 07:13 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.