Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 1997 - 2003 F150
Sign in using an external account
Register Forgot Password?


1997 - 2003 F150 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage SPONSORED BY:

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-04-2001, 09:28 AM
corki corki is offline
New User
 
Join Date: Jul 2001
Posts: 3
corki is starting off with a positive reputation.
Firing Order for 1998 4.2

Does anyone have the correct plug location and firing order for the 4.2 v6? There doesn't seem to be manuals available yet for us sometime do it yourselfers. Need block cylinder number locations and plug wiring locations on coil pack.
Reply With Quote
  #2  
Old 07-04-2001, 11:42 AM
jerryrigged jerryrigged is offline
Senior User
 
Join Date: Apr 2001
Posts: 105
jerryrigged is starting off with a positive reputation.
Firing Order for 1998 4.2

The Coil-pack is numbered. Cylinder numbers start with passenger side front cylinder as number 1. Number 2 & 3 are passenger side, middle then back, respectively. 4, 5, 6 are drvers side from front to back.

If the numbers on your Coil-pack are faded/missing, post back and I will check my truck for you.
Reply With Quote
  #3  
Old 07-04-2001, 01:36 PM
corki corki is offline
New User
 
Join Date: Jul 2001
Posts: 3
corki is starting off with a positive reputation.
Firing Order for 1998 4.2

Don't know if you got my e-mail, but my numbering on the coil pack is gone. Thanks for your quick response, have a great 4th.
Phil
Reply With Quote
  #4  
Old 07-06-2001, 03:38 AM
jerryrigged jerryrigged is offline
Senior User
 
Join Date: Apr 2001
Posts: 105
jerryrigged is starting off with a positive reputation.
Firing Order for 1998 4.2

Sorry, I left my truck at my Dad's house at the lake, so he could haul some stuff back down state. I didn't think to look at it, either. I think he is coming down Sunday night. Maybe, someone else can help you out before then.

From memory, I think they match up with the way the cylinders are numbered for #1,2,3, and the other side goes (front to back) #6,4,5. I am almost sure, but maybe you should wait until I can confirm it.

On the other hand, I doubt any damage would result from trying [font color=red]{insert standard disclaimer here}[/font]. Just let it idle. If it runs like crap shut it off. This may result in a check engine light and a stored code. If you don't have access to a code reader, unhook your battery to clear it.

On a V6 DIS (distributerless ingition system), such as ours, there are three coils in the coil-pack, with two spark plug leads each. When it's time for one cylinder to fire, the other cylinder attached to that coil fires as well. I think this happens when that cylinder is 360 degrees from when it needs to fire (near the end of the exhaust stroke), so it has no effect. So, if you think about it, the coils can't be connected to cylinders that use the same rod journal on the crank (opposing cylinders can't be at TDC at the same time). If I am right about #1,2,3, that leaves two possible combinations for the other three cylinders (starting to sound like a brain teaser).

Then again, maybe the inconsequential fire doesn't happen during the exhaust stroke, or #1,2,3 go from back to front. Ah well, I wish my memory was better.

BTW, no, I didn't get an e-mail from you. I checked and it is correct, when you click the mail icon above.???
Reply With Quote
  #5  
Old 07-06-2001, 03:59 AM
jerryrigged jerryrigged is offline
Senior User
 
Join Date: Apr 2001
Posts: 105
jerryrigged is starting off with a positive reputation.
Firing Order for 1998 4.2

Quote:
Don't know if you got my e-mail, but my numbering on the coil pack is gone. Thanks for your quick response, have a great 4th.
Phil
Ahh, you sent me a Private Message. I just found it. They should make your inbox flash red or something when someone sends you a message.
Reply With Quote
  #6  
Old 07-07-2001, 04:14 AM
jerryrigged jerryrigged is offline
Senior User
 
Join Date: Apr 2001
Posts: 105
jerryrigged is starting off with a positive reputation.
Firing Order for 1998 4.2

[font size="1" color="#FF0000"]LAST EDITED ON 07-Jul-01 AT 05:14 AM (EST)[/font][p]Ok, here you go.

On the coil-pack, passenger side front to back is 1,2,3. Drivers side front to back is 5,6,4.
Reply With Quote
  #7  
Old 07-07-2001, 08:55 AM
JimCaudill JimCaudill is offline
Junior User
 
Join Date: Jun 2001
Location: Dayton, Ohio
Posts: 77
JimCaudill is starting off with a positive reputation.
Firing Order for 1998 4.2

JerryRigged, I think someone has swapped positions of 2 of your coil packs, and that is leading you to incorrectly assume the cylinder positions. The cylinders are as you state them to be on the passenger side (1-2-3 front to back) and 4-5-6 front to back on the driver's side. Since the coil packs are interchangeable, inadvertent swapping of 2 coil packs during a sparkplug change would be of no consequence.
Reply With Quote
  #8  
Old 07-07-2001, 07:22 PM
jerryrigged jerryrigged is offline
Senior User
 
Join Date: Apr 2001
Posts: 105
jerryrigged is starting off with a positive reputation.
Firing Order for 1998 4.2

No, I don't think so. The coil-pack we are referring to is one unit with all three coils inside. You can't swap them around like you say on my '97 F-150 4.2L (I have been assuming his '98 is identical, though).

I guess it's possilbe to turn the whole unit around, which would move two coils as you say.

My coil-pack has the harness plug on the passenger side. It has a sticker on top with the cylinder numbers on it. If you follow the wire from the coil-pack to the cylinder, you wind up at a cylinder # that corresponds with the # on the coil-pack's sticker.

Maybe, because I spread the info out over a few posts it is easy to misread, so I'll restate it:

The cylinders are numbered front to back, passenger side is 1,2,3, driver's side is 4,5,6. The coil-pack is numbered front to back, passenger side is 1,2,3, driver's side is 5,6,4.
Reply With Quote
  #9  
Old 07-07-2001, 07:35 PM
jerryrigged jerryrigged is offline
Senior User
 
Join Date: Apr 2001
Posts: 105
jerryrigged is starting off with a positive reputation.
Firing Order for 1998 4.2

Jim, maybe you only read my first attempt to answer his question from memory, where I was wrong. But, I rechecked after you posted and, as far as my truck goes, the info in my last post is correct.
Reply With Quote
  #10  
Old 07-07-2001, 09:36 PM
mefsh mefsh is offline
Senior User
 
Join Date: Nov 2000
Posts: 117
mefsh is starting off with a positive reputation.
Firing Order for 1998 4.2

OK guys, I have been monitoring this discussion so now I went out and checked my 4.2 V6 98 model and it is passenger side front to rear 1 2 3 and drivers side front to rear 5 6 4.
Reply With Quote
  #11  
Old 07-08-2001, 12:42 PM
dcovell dcovell is offline
New User
 
Join Date: Jun 2001
Posts: 12
dcovell is starting off with a positive reputation.
Firing Order for 1998 4.2

Reply With Quote
Old 07-08-2001, 12:42 PM
Reply

Go Back   Ford Truck Enthusiasts Forums > Newer Light Duty Trucks > 1997 - 2003 F150

Tags
1997, 1998, 2002, 42, 97, 98, coil, engine, f150, firing, ford, liter, order, truck, v6

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump



All times are GMT -5. The time now is 09:40 PM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - 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