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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2231

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Recently the Defender seemed to develop a running issue at idle - but only after driving for around an hour.

It would cruise along quite happily but then when I came to a stop it would run roughly, almost as if it was running on three cylinders. Sounded like a Subaru on light throttle but then picked up again at higher revs.

It felt as though one cylinder wasn’t getting fuel which was obviously apparent at idle but masked by the other cylinders/rotational mass at higher revs.

After “the France incident” I suspected something wasn’t right with one or more injectors so figured this was a good place to start.

A resistance test of each injector suggested they were all ok…

I tested for signal at each injector harness connector using a noid test light which confirmed that each injector was getting power/pulse.

Each fuel line to injector was getting fuel…

So when the engine went into this rough idle state I pulled over and unplugged each injector one by one.

Unplugging injector 1 caused the engine to almost die
Unplugging injector 2 caused the engine to almost die
Unplugging injector 3 caused the engine to almost die
Unplugging injector 4 made no change to the running of the engine, it continued to run on three cylinders.

Which suggested injector 4 was defective.

I ordered a brand new (not reconditioned) Denso injector, fitted it, coded the ECU, got the engine up to temperature and did the injector learn process…

Bingo, the engine has run lovely since so fingers crossed this marks the end of my engine woes? Time will tell…

Interestingly when I removed the old injector the tip was bone dry, clean with slight rust - looked as though it had not been fuelling for quite some time. Probably since it stuck itself open in France!

Moral of the story - don’t waste your time with reconditioned injectors, buy new.


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 > 110 XS Double Cab
> Instagram @simonlanemind
Post #942988 18th Feb 2022 7:34pm
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Welshsurferdude



Member Since: 23 Feb 2012
Location: Newport
Posts: 2315

Wales 
Expensive lesson that with injectors!

New every time for me

Glad it’s all fixed

I’m still looking for my own puma 110 to replace the one I sold at 240k miles! 2008 Santorini Black 110 XS USW (Sold)

2015 Discovery 4.5 Black pack Firenze red XS

2008 Corris Grey 110 XS USW (sold)

2011 Santorini Black 110 XS USW (Sold)
Post #943017 19th Feb 2022 9:10am
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2231

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Two 150 mile journeys done on the weekend. Defender is running well - plenty of grunt and no rough idle. Feeling hopeful that the injector was the last of the gremlins > 110 XS Double Cab
> Instagram @simonlanemind
Post #944109 28th Feb 2022 1:14pm
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BrickBox



Member Since: 05 Oct 2021
Location: Wales
Posts: 622

Wales 2008 Defender 110 Puma 2.4 USW Zermatt Silver
I’ve just read the whole project thread. Brilliant progress and a good read. Nice to see a local member also. Cool 2008 2.4 110 Utility XS.
Post #947509 30th Mar 2022 12:48pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2231

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Cheers! Will keep eyes peeled for a Silver 110 USW and give you a wave Thumbs Up > 110 XS Double Cab
> Instagram @simonlanemind
Post #947516 30th Mar 2022 3:20pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2231

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Three months on and with plenty of miles under my belt since faulty injector four was replaced... The engine hasn't missed a beat and the power delivery now its firing on on all cylinders is quite something. Hoping to do the North Coast 500 this year. > 110 XS Double Cab
> Instagram @simonlanemind
Post #953337 23rd May 2022 3:41pm
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L110CDL



Member Since: 31 Oct 2015
Location: Devon
Posts: 10513

England 
That is good news Hank with not missing a beat Thumbs Up

Hope you get to do the NC 500, you won't regret it Very Happy 1996 Golf Blue 300Tdi 110 Pick up. Keeper.


Clayton.
Post #953377 23rd May 2022 8:53pm
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Welshsurferdude



Member Since: 23 Feb 2012
Location: Newport
Posts: 2315

Wales 
Just throw a 8HP and N57 in there and be done with it!

300BHP, that's where im gonna go with mine Laughing 2008 Santorini Black 110 XS USW (Sold)

2015 Discovery 4.5 Black pack Firenze red XS

2008 Corris Grey 110 XS USW (sold)

2011 Santorini Black 110 XS USW (Sold)
Post #953387 23rd May 2022 9:24pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2231

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Look forward to seeing yours but for me it doesn’t make sense whilst the 2.4 runs well. Maybe one day if it dies a death.

NC500 looks great! Just need a second mortgage cover the fuel Laughing > 110 XS Double Cab
> Instagram @simonlanemind
Post #953391 23rd May 2022 9:39pm
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Welshsurferdude



Member Since: 23 Feb 2012
Location: Newport
Posts: 2315

Wales 
N57 does 30+ mpg on a 8hp apparently

there you go! Laughing 2008 Santorini Black 110 XS USW (Sold)

2015 Discovery 4.5 Black pack Firenze red XS

2008 Corris Grey 110 XS USW (sold)

2011 Santorini Black 110 XS USW (Sold)
Post #953392 23rd May 2022 9:40pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2231

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Injector cover has been cracked since I've owned the Defender which bugged me, but not enough to pay £55 for a new one. Recently picked up a genuine replacement from ebay


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Click image to enlarge
 > 110 XS Double Cab
> Instagram @simonlanemind
Post #955610 15th Jun 2022 6:10pm
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CarMan



Member Since: 29 Nov 2010
Location: Cotswolds
Posts: 1778

United Kingdom 
Result, assuming it was cheaper Thumbs Up
Post #955614 15th Jun 2022 6:36pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2231

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Back in April Shocked my blower began to work only on speed 3 - suspected blower resistor pack failure.

I ordered a new JLR part 11th April but by mid June it was still on backorder so I cancelled and went for an OEM replacement.

New part arrived within two days and I fitted it today - fiddly but ten mins later I now have blowers on speed 1, 2 and 3 again Thumbs Up

New OEM part on the left, original one on the right


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 > 110 XS Double Cab
> Instagram @simonlanemind
Post #956103 21st Jun 2022 12:29pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2231

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Sailed through another MOT this morning. Did have one advisory... "Oil leak, but not excessive"

I think this might be a weepy power steering reservoir hose - will investigate. The MOT tester did add "show me a Defender without an oil leak" Laughing > 110 XS Double Cab
> Instagram @simonlanemind
Post #956810 29th Jun 2022 10:08am
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2231

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Fitted a new clutch switch which has cured the revs hanging between gear changes

Space is tight in there so I cut the ring off the old switch which allows you to remove the electrical connector and get a grip on the switch body to rotate it out with grips whilst holding the adapter fitting with a spanner to prevent it from unscrewing from the master cylinder

JLR switch

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Cut the outer ring off the old switch

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This is what is left and can be turned out with grips

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 > 110 XS Double Cab
> Instagram @simonlanemind
Post #960586 4th Aug 2022 9:16pm
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