4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

How to drain fuel tank - fuel pump issue

Old 04-14-2019, 07:37 AM
Thread Starter
Join Date: May 2018
Location: Ontario
Posts: 4
Default How to drain fuel tank - fuel pump issue


My baby, 2003 mach 1, 80,000km, died while driving. Scenario was fuel deprivation. Towed it home on the flatbed. $160 sigh.
Realized the fuel pump is not priming.

I've got 3/4 tank full and I am wondering how to empty the fuel tank considering the fuel pump is not functioning, the car will not start and I don't believe 2003 allows siphon techniques.
crazyone64 is offline  
Old 04-14-2019, 07:40 AM
Thread Starter
Join Date: May 2018
Location: Ontario
Posts: 4

Background - the car was stored for the winter, drove it 5 km, parked, on the way back home it died.
First time this happened.
Don't think it's related but last year I changed the starter, it cranks np.
crazyone64 is offline  
Old 04-16-2019, 06:41 PM
5th Gear Member
Join Date: Jan 2018
Location: Pennsylvania
Posts: 2,263

There are many ways to drain the tank. Some older cars even had drain plugs in them,
so you can drain the fuel into a container from underneath...

The right way:

Other ways:

Hand pump.... Many vehicles will also have a small metal door or flap that may prevent the tubing from being fed into the tank.
If that is the case, use your screwdriver to push the small metal door open, and then proceed to feed the tubing down into the tank.

You can replace the pump with the fuel in it, you just have to be careful!

I the pump doesn't prime, but will run, you can use the pump to drain the tank.

If you jumper the +12V connector to the fuel pump test line, then you will turn on the pump continuously until you pull the jumper wire.
08'MustangDude is online now  
Related Topics
Thread Starter
Last Post
5.0L General Discussion
03-26-2018 02:29 AM
5.0L (1979-1995) Mustang
03-15-2011 06:13 PM
4.6L (1996-2004 Modular) Mustang
02-19-2011 08:40 AM
Classic Mustangs (Tech)
09-23-2008 06:32 PM

Thread Tools
Search this Thread
Quick Reply: How to drain fuel tank - fuel pump issue

Featured Sponsors
Vendor Directory

Contact 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.