4.6 Heater pipe - F150online Forums

4.6 Heater pipe

Thread Tools Search this Thread
Old 02-02-2011, 06:36 PM
Junior Member
Thread Starter
Join Date: Feb 2011
Posts: 1
Angry 4.6 Heater pipe

I'm taking the heads off a 97 4.6 4wd.
Trouble is I can't figure out exactly how to get a pipe disconnected. From the back of the waterpump housing, it runs up and attaches to the passenger side cylinder head. It looks to me like its pressed onto the water pump housing, and there is not enough room between the head and the firewall to detach it from the head.

How the heck do I get that pipe off. Lol I'm half tempted to cut it and splice in a piece of heater hose.
Reply With Quote
Old 02-02-2011, 09:46 PM
Technical Article Contributor
Join Date: Oct 2006
Location: Michigan
Vehicle: 1997 Ford F150 4.6
Posts: 1,762
There is a nipple pressed thru the back of the waterpump cavity into the engine valley. The tube just slides over the nipple and O rings on the nipple prevent coolant from leaking at the connection. Once the two retaining bolts are removed from the back of the head the tube slides right off the nipple when forced rearward. There is enough room at the rear of the head to remove the two bolts one of which has a stud head but it is tight and time consuming to remove them. I usually just reinstall only one of the bolts when replacing the tube as thats all thats needed. Some here actually do cut the tube and install a piece of heater hose as a connection not a bad idea actually. I think jbrew has some pics somewhere showing how this is done. Good luck.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Transmission bracket Mrmarcio02 1997 - 2003 F-150 2 09-24-2016 10:20 PM
Adding a muffler Droos1 Exhaust & Intake Systems 6 10-25-2015 08:45 PM
Replaced Evap valve and Filler Pipe Ky Bob 2009 - 2014 F-150 12 10-14-2015 10:20 PM
4.6 to 5.4 mounting ignition coils 5.4swap 1997 - 2003 F-150 4 09-29-2015 01:09 PM

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 On
Refbacks are Off

All times are GMT -4. The time now is 10:21 PM.

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. Fordé is a registered trademark of the Ford Motor Company