vet needs help

Reply Subscribe

Thread Tools

Search this Thread

Apr 20, 2016 | 04:52 PM

BillAllen388

Thread Starter

New User

Joined: Apr 2016

Posts: 1

Likes: 0

vet needs help

I've changed the filter, do u need to change the relay and fuel regulator before I try to take the fuel pump out. How can I besure the fuel pump is bad. 99 E150. 4.2 liter

Last edited by BillAllen388; Apr 20, 2016 at 04:54 PM. Reason: yea and make

Apr 20, 2016 | 08:46 PM

jimandnena

Elder User

Joined: Mar 2014

Posts: 906

Likes: 1

Quote:

Originally Posted by BillAllen388

I've changed the filter, do u need to change the relay and fuel regulator before I try to take the fuel pump out. How can I besure the fuel pump is bad. 99 E150. 4.2 liter

Hi Bill,
the best thing to check is the fuel pressure at the fuel rail for the injectors. You can usually hear the fuel pump run for a few seconds when the ignition key is turned to run. Might have to listen at the filler cap while someone cycles the key. jim

Apr 24, 2016 | 03:39 PM

piratse

New User

Joined: Apr 2016

Posts: 3

Likes: 0

Get a pressure gauge (might be able to rent on from oreillys) and attach it to the rail. It's pretty easy. Then you need to drive it under load while watching the gauge (we use a dyno at our shop, but you can just run the hose under the wipers). That will help verify. Most shops can do this and it shouldn't cost much. Better to have them verify than to waste time and money doing a pump.