1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Inverted Fuel Pump?

Old 07-29-2010, 10:05 AM
Steves55's Avatar
Steves55 is offline
Senior User
Thread Starter
Join Date: Apr 2010
Posts: 351
Steves55 is starting off with a positive reputation.
Question Inverted Fuel Pump?

Ok, color me confused! I recently replaced my defective fuel pump with an Airtex 4208. Installed it right side up with the outlets on the bottom and with the push lever angling downwards. It works fine but now I think I am getting too much pressure to my Holley 1904. I read an article in one of those Ford F100 history books and it mentioned that the 54 & 55 6 cylinder models used an inverted pump. Interesting so I checked out the fuel pumps for 55's on Mac's Auto Parts website and sure enough the picture appears to be my Airtex pump only inverted. Did I install this incorrectly or am I using the wrong pump. I wasn't having flooding issues until I changed the pump. Maybe with the lever pointing downward is making it produce too much pressure. Needless to say I'm a bit confused on this one and my apologies if I managed to confuse anyone else reading this.
Old 07-29-2010, 11:19 AM
jim collins
jim collins is offline
Join Date: Apr 2009
Location: South west Idaho
Posts: 3,032
jim collins has a good reputation on FTE.jim collins has a good reputation on FTE.jim collins has a good reputation on FTE.
New one on me I never new it was possible to mount it upside down. I will stay tuned for further development.
Old 07-29-2010, 01:24 PM
57icebox is offline
Freshman User
Join Date: Mar 2010
Posts: 31
57icebox is starting off with a positive reputation.
This thread might be good read. I found it when I was looking for info on my pump. I seem to only get a half of a pump. So last night I ditched the mechanical pump for an electric one.
Related Topics
Thread Starter
Last Post
1948 - 1956 F1, F100 & Larger F-Series Trucks
12-27-2015 06:18 PM
Steve in NC
1968-2013 Full Size Vans
12-24-2015 06:44 AM
1968-2013 Full Size Vans
09-01-2015 12:44 PM
1999 - 2003 7.3L Power Stroke Diesel
10-27-2012 12:40 PM
Excursion - King of SUVs
12-03-2011 08:15 PM

Thread Tools
Search this Thread
Quick Reply: Inverted Fuel Pump?

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

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 and affiliated sites.