↓ Advertise on Defender2 ↓

Home > Td5 > Defender 15p not starting
Post Reply  Down to end
Page 2 of 2 <12
Print this entire topic · 
Dr Phibes



Member Since: 24 Apr 2024
Location: Melbourne
Posts: 44
Australia 
So the pressure should stay high after the pump stops, and the pump incorporates a non return valve?

It’s bafflingly hard to find a clear answer to this on any forum! There is discussion here but inconclusive: https://www.landyzone.co.uk/land-rover/td5...em.161412/

I can’t see how the pressure regulator would help- it just discharges fuel if over pressure.

And the NRV in the filter head is optional and only seems to stop fuel flowing into the return from the engine assembly.
Post #1054274 9th Dec 2024 8:34pm
View user's profile Send private message View poster's gallery Reply with quote
Dr Phibes



Member Since: 24 Apr 2024
Location: Melbourne
Posts: 44
Australia 
Bump. Still struggling after replacing multiple parts. I also added a pressure gauge at the temp sensor port.

Would be really helpful if someone can confirm pressure should stay high. Or at least non zero…
Post #1055254 20th Dec 2024 11:23pm
View user's profile Send private message View poster's gallery Reply with quote
revd



Member Since: 20 Apr 2024
Location: England
Posts: 130
United Kingdom 
Did you put additive in the tank because you were having starting/running issues?

The job is a pain but I would still change the pump.

I had an Elise that would crank but not start - it was the pump

My old Td5 went from first flick of the key to multiple attempts- it was the pump

Yours might not be the pump but you need to eliminate it as a possible cause
Post #1055260 21st Dec 2024 7:51am
View user's profile Send private message View poster's gallery Reply with quote
Dr Phibes



Member Since: 24 Apr 2024
Location: Melbourne
Posts: 44
Australia 
I put additive in because I did with another vehicle and it made an appreciable difference. I bought the defender recently and am working my way through it so thought I would give it a shot.

I have put a new VDO pump in. The old pump was probably original but worked fine. Both reliably output 4.5 bar at the fuel regulator.

I also replaced the main relay and fuel pump relay with new narva relays.

I have checked that fuel is flowing properly in all of the lines.

The only other things I can think of are injector seals, the ECU not firing the injectors, some weird head blockage, or the fact the air bleed valve is Censored fuel through per my other thread at https://www.defender2.net/forum/post1055263.html#1055263

The fact it doesn’t hold pressure seems strange. If someone has actually put a fuel pressure gauge on and observed normal behaviour it would be very helpful to know.
Post #1055264 21st Dec 2024 8:10am
View user's profile Send private message View poster's gallery Reply with quote
A.Rubio



Member Since: 04 Mar 2017
Location: Rocafort -Valencia
Posts: 31
Spain 
Have you checked the impact switch located in the engine compartment near the coolant reservoir to make sure it is not tripped?.
Saludos y suerte
Post #1055296 21st Dec 2024 4:56pm
View user's profile Send private message View poster's gallery Post Reply
Post Reply  Back to top
Page 2 of 2 <12
All times are GMT

Jump to  
<  Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
DEFENDER2.NET RSS Feed - All Forums