HILUX COMMON RAIL DETONATION WHEN COLD

Hop over to pradopoint.com

Massive thread in the Diesel section.

The D4D's have problems. It appears all manufacturers are having problems with CRD type engines.

Your experience sounds like the injectors are the problem. Advanced stages of what you are describing has led to big $$$.

I have a Prado D4D, 26,000km 16 monthls old. No problems yet.

There have been issues with pre-detonation when cold in the Prado D4D engines (same as Hilux). Here is a link to the Pradopoint thread discussing the issue. Link

Leachy

It's normal, don't worry.

Sounds like an injector fault to me,we have replaced many a supply pump for the same reason but occasionally water does cause damage to an injector.

They will idle fine but under load they knock and smoke and carry on.They need to be scanned to ascertain there fitness.

Matt

Hi Jon
I have a 07 D4D with 51000 on the clock & mine makes the same noise. the shaft also, clunks, just like the 200's. every one seems to think it's normal.
anyhow, below is a reply to this question on, pradopoint, from, clifton....
..................................................
No they do not inject on every stroke otherwise we would get severe fuel dilution and high bearing surface wear, but I know where you are coming from.

The 1KD-FTV engines are HCCI Engines which stand for Homogeneous Combustion Compression Ignition Engines what a lovely acronym Aye.

The Toyota IKD-FTV engine uses UNIBUS (Uniform bulky combustion) which comprises a combination of early and late injection timing.

The operation is up to half load and speed. The concept is described by
Toyota Engineers and many papers have been written on the subject.

The early injected fuel undergoes a low temperature
reaction while the late injection serves as an ignition trigger and sets off
the high temperature reaction. The first injection or pilot injection quantity is small.
............................ cheers Tom

Jon,

We have several hilux trays and utes at work with the same engine(1KD) and since new when cold they sound as if they are about to drop their bundle but when warm sound normal. most have done well over 130ks now and still perform and sound exactly the same as when they were new so i wouldnt worry too much. cheers Paul

Bloody Hell !!!
I`ll stick with my old 2.8D with A mechanical injector pump .