Thread: 2.4 Puma - Possible Injector Problem

G'day Lachlan

I'm no mechanic, however, I have experienced a range of issues with my '08 110 over the four-and-a-bit years I've owned it. I had some erratic idling with mine which turned out to be contaminated fuel.

I reckon this is an unlikely cause but worth checking your fuel filter just to eliminate contamination as a possibility. Pretty easy to do, even for those of us still learning our way around the Defender (like me).

Thanks mate.

I forgot to mention, my mechanic inspected the fuel filter, and air sensors and all were fine. And i have run a Wurth Biocide and Injector Cleaner through about 2 full tanks ago.

Hunting idle is often a symptom of a Suction Control Valve heading south - they're acommon point of failure on these motors around your mileage (mine went at 125k) and the next stage is a (intermittent) loss of throttle response.

It may be worth looking into whether this is your issue - I'd suggest you try surfing some Transit forums for more info on this (as well as other possible causes).

Originally Posted by n plus one

Hunting idle is often a symptom of a Suction Control Valve heading south - they're acommon point of failure on these motors around your mileage (mine went at 125k) and the next stage is a (intermittent) loss of throttle response.

It may be worth looking into whether this is your issue - I'd suggest you try surfing some Transit forums for more info on this (as well as other possible causes).

Thank you for that, after reading up on the SCV, it could definitely be the potential problem.

I hope that is it rather than injectors!

Did you have any smoke or strong smell from your exhaust?

Originally Posted by Keath

Thank you for that, after reading up on the SCV, it could definitely be the potential problem.

I hope that it is rather than injectors!

Did you have any smoke or strong smell from your exhaust?

Not that I noticed - what type of smell are you noticing?

Originally Posted by n plus one

Not that I noticed - what type of smell are you noticing?

I'm not too familiar with different diesel odors, but it just smells toxic. I used to be able to leave the car running inside a garage without noticing any bad fumes, now i can smell the car running from 20m away if i'm downwind.

I had issue's with mine a while ago.
The RACV made LR take the injectors and pump out and have them tested by a guy in Clayton. All returned with the ok.
I'm not sure who you've got over your way, but maybe you could track a similar bussiness over there.
My problem was eventually solved with the replacement of the ECU. I'm not sure how much the testing cost, as mine was all done under insurance/warranty, and as such, the tester was presented with the single parts, not the car to deal with.
There's also a place in Sydney which rebuilds them too, which is what I looked into as I kept getting told the Ford ones wont work in my car. Having said that, no-one would actually tell me WHY they would'nt match. All sounded a bit sus to me.

On the up-side, in my garage, I have 4 injectors and a fuel pump for later use if anything does happen to mine.

My 2009 130 is exhibiting similar symptoms. Has been very noticeable on the recent frosty mornings. The 'toxic' smell is normal and I'm told is characteristic of common-rail diesels.