Hello again, everyone.

So I have been rooting around my newly purchased 1998 Discovery and have been flummoxed by what seems to be a fuel system issue.

I have two theories, but first, ... I mean... the symptoms.

The first symptom is a hard start. Takes a bit of cranking to finally get it to fire up. During the cranking it will sputter and -almost- start a few times before finally catching. The second symptom is a periodic loss of power when accelerating from a stop or coasting state.

The first and most obvious issue could be a failing fuel pump. I have read that the fuel pumps in these models tend slowly fail rather than just quitting altogether. How can I test this short of purchasing a new pump?

The second and less likely issue could be vacuum related. Many of the vacuum lines seem loose and deteriorated. The most obvious line pcv hose. it is physically loose against its fittings. I plan to replace all these loose lines anyway but would this cause the hard starting issue? My first inclination is "no".

Any thoughts?

 

https://landroverforums.com/forum/di...el-pump-53083/

Have the OBDII codes read with a reader if you have one, or at a parts store. This is nearly always the best first step and most informative.

Otherwise, fuel pump and vacuum lines are cheap. Replace them to eliminate possible causes.

 

Only codes that are firing are misfires (another symptom of both vacuum and fuel pump)

 

There were two codes though that related to the evap system.

P1448 Evaporative Emission system 2 fault
P1496 Evaporative Emission system 1 fault

 

Those could be leaks in the evap system tubing, etc.

There is a pressure test point on the passenger side fuel rail, look for 30 - 34 PSI there when key is turned to position 2. Low PSI could be pump, pump wires corroded at conections, or filter. Change filter if you have not already. Right rear tire at top of wheel well.

 

Thanks, Savannah. I did replace the fuel filter. It did look like it was OE so it needed to be done. Problem remains unchanged though. Forgive my ignorance, but what sort of device would I use to check the pressure?

 

Well, A fuel system pressure gauge of course..
You can get one at any parts store.. Or cheap if you have a Harbor Freight nearby...

Just a gauge with hose on it and a schrader to fit the fuel rail port...And a button to bleed it...Pretty straight forward..You could almost measure it with a tire gauge I would think... No, Never mind.. Don't try that..

I have a new pump on it's way as we speak..I have the same symptoms as you. And mine started moaning yesterday... Best price is from Trevor at www.rovahfarm.com if you need the whole thing.. Mine is pretty deteriorated on top so I'm gonna change the whole thing out this time and then order one of the $20.00 ones for my emergency kit.

Mine looks original at 16 years and 203K miles... Nylon body looks like it will fall apart when I start on it...

Good Luck

John

JOhn

 

JP, is that the PRC9409? 132 bucks (mine has the advanced evap, so I assume this is it) Thanks for the help on the gauge. :-D

 

If you have AEL I dont think any of the rovahfarm ones will work.

AEL pumps are like $350

 

Yeah. I was afraid of that. I just called Bill at Great Basin Rovers and he told me the same thing.

Discovery I Fuel Pump And Sender - Order Land Rover Pumps Online

This is the one I found on British Atlantic