'03 Lincoln Aviator Cylinder 7 Misfire - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Explorer | Ford Explorer Sport Trac | Mercury Mountaineer | Lincoln Aviator Forum for discussion of the Ford Explorer, Ford Explorer Sport Trac, Mercury Mountaineer and Lincoln Aviator.

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 05-21-14, 02:36 PM Thread Starter
Registered User
 
Join Date: May 2010
Location: Austin, TX
Posts: 49
'03 Lincoln Aviator Cylinder 7 Misfire

I've had this intermittent misfire for the past couple months, mostly only at idle . It's a Cylinder 7 Misfire. To diagnose I've put all new plugs in, swapped the cylinder 7 coil pack with cylinder 5, also reinstalled the old fuel injectors on the left bank cylinder. Still have cylinder 7 misfire. My next step is to do a pressure test.

After some research online, I'm scared that I've found the problem noted in this tsb: http://ww2.justanswer.com/uploads/ke...sb06-05-13.pdf

Been reading around different posts scattered across the web and many have posted it's a common issue.

If it is in fact a leak through the exhaust valve and I do have to replace the cylinder head, can I possibly do it in my garage at home without taking the engine out?

My main concern is the timing chain. I don't want to mess the timing up. I've been reading through Alldata and ChiltonDiy and looks like it's a big job.


2003 lincoln aviator
ramacher is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 05-21-14, 03:01 PM
2002 F150 XLT
 
Bert's Avatar
 
Join Date: Nov 2008
Location: Oregon
Posts: 10,340
Re: '03 Lincoln Aviator Cylinder 7 Misfire

Do a compression test to be sure that's what it is. It is a big job and you should need special tools to be sure to get it right. If you have access to Alldata, you can see what's involved.

Bert
Bert is offline  
post #3 of 5 (permalink) Old 05-21-14, 04:41 PM Thread Starter
Registered User
 
Join Date: May 2010
Location: Austin, TX
Posts: 49
Re: '03 Lincoln Aviator Cylinder 7 Misfire

Quote:
Originally Posted by Bert View Post
Do a compression test to be sure that's what it is. It is a big job and you should need special tools to be sure to get it right. If you have access to Alldata, you can see what's involved.
Going to do the compression test tomorrow.

I have access to alldata and Chiltondiy.com. On alldata it doesn't have instructions just for the cylinder head, its in the complete engine disassembly. Chilton has replacement instructions for the cylinder head but not as visual (not many images), and I'm afraid of messing up the timing.

So far it's looking like I'm going to take it into a shop :(.

Autozone has reman cylinder heads starting at $550 going to $800, rockauto has it at $750 and its ~$1,500 from the ddealer. Would I need fine going with the $550 one from amazon?

http://m.autozone.com/autozone-mobil...znuv?id=875572

2003 lincoln aviator
ramacher is offline  
post #4 of 5 (permalink) Old 05-21-14, 06:33 PM
2002 F150 XLT
 
Bert's Avatar
 
Join Date: Nov 2008
Location: Oregon
Posts: 10,340
Re: '03 Lincoln Aviator Cylinder 7 Misfire

You might get the info you need here. http://www.autozone.com/autozone/rep...96b43f802e77b5

I don't know about the cylinder head quality from anywhere but Ford. Why not have yours rebuilt if it is a valve problem?

Bert
Bert is offline  
post #5 of 5 (permalink) Old 05-21-14, 08:40 PM
Moderators
 
r-clar's Avatar
 
Join Date: Feb 2013
Location: Demotte Indiana
Posts: 1,960
Re: '03 Lincoln Aviator Cylinder 7 Misfire

Agree with ^^^. Don't want an inferior cylinder head.


Sent from AutoGuide.com App
r-clar is offline  
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford Explorer | Ford Explorer Sport Trac | Mercury Mountaineer | Lincoln Aviator


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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

 
For the best viewing experience please update your browser to Google Chrome