DEFENDER2.NET - View topic - Intermittent Engine Stalling on Startup

↓ Advertise on Defender2 ↓

Home · FAQ · New Posts · My Posts · PMs · Search · Members · Map · Calendar · Profile · Donate · Register · Log In

Home > Puma (Tdci) > Intermittent Engine Stalling on Startup

Page 2 of 2

Print this entire topic ·

MartinK

Member Since: 02 Mar 2011
Location: Silverdale (Lancashire/Cumbria Border)
Posts: 2664

2011 Defender 110 Puma 2.4 USW Orkney Grey

Well... in the spirit of DEF2, I thought it may be useful to others if I close this thread off properly!!!

So to recap. Defender was running GREAT! Lots of smooth power, starts first time every time when COLD, normal fuel consumption etc...

BUT - would not start without loads of throttle and revs when warm/hot. If it was left 15 mins or more it would start fine, but when switching off a hot engine (like getting fuel in the petrol station) and re-starting within just a couple of minutes it was a pain to get it going again.

I had even taken it to a LR specialist who failed to correctly diagnose...

Having read on another forum (Ford Transit forum IIRC) that a weeping fuel-rail PRV can cause this by weeping fuel when hot (seems reasonable) I changed the PRV again. No change to symptoms.

I then read (also on a Transit forum IIRC) that the VCV (they called it a "suction valve") can stick when hot (hmmm really? but never mind), I bit the bullet and ordered another new genuine Denso one. Fitted this morning, did the Pilot Relearn again.... and BAM - FIXED!

So a VCV can cause this. My last VCV (also genuine Denso, correct part #) obviously had a fault.

I'm delighted!

Whilst the EGR, and a few other parts were changed in the fault-finding process, at least I have lots of spares in the garage now! I'll clean my original EGR and keep it on the shelf

One last thing. If you want to replace your VCV, a 5mm Park Tools "P Handle Hex Wrench" makes it so easy! Cyclists will know the brand because they do tools for cycles... The "ball" on the long end means you don't need to hit the 5mm hex head dead centre...plus the length gives you reasonable access around the various pipes and wires...

Click image to enlarge Defender "Puma" 2.4 110 County Utility (possibly the last of the 2.4's)

28th Sep 2022 1:16pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 19522

Those symptoms were what I had with mine, and replacement VCV fixed it.
Also a significant amount of power was back again once replaced, plus no pilot relearn needed.
I never did the learn and it made no difference at all.

Got mine from PF Jones, it was the correct part. It came in a Genuine Nissan parts box.
I am assuming the part is interchangeable.
Anyway, double checking was correct.
Fitted it, all good been perfect ever since. Diesels Lives Matter. ⛽️🛢️👨‍🔧🧰⚙️
And if You Love the Country, then we’re on the same side ~
I got’ love for Britain, I got’ British pride’. 🇬🇧

28th Sep 2022 7:57pm

Page 2 of 2

All times are GMT + 1 Hour

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