Moderator: Luke
Julez wrote:Model Ford Transit 330 2.4 tdci MWB
Engine type: 2.4L Duratorq-TDCi (135/140PS)-Puma
Production date: 7/2005
Mileage: 115,000
When an injector fails, and it's the first one to go, should all the injectors be replaced at the same time?
I'm told Ford recommends this, that if the vehicle was being repaired by a Ford dealer they'd just do it, wouldnt give the option of just replacing the one that failed. However, I can't see that advice in writing, online or in print. So is that official advice, or just common sense, or is it just a matter of personal choice/judgement e.g. depends on the mileage etc?
wojciech wrote:If there are no filings in the fuel filter, do the injector overflow test. This is a cheap, simple and quick test to determine the condition of the injectors.
wojciech wrote:Replace or regenerate only those exceeding the fuel return rate (due to costs). If there are filings in the fuel, the repair will be very expensive. You then have to replace the pump and all injectors and flush the entire fuel system.
wojciech wrote:Costs may exceed the value of the car. A similar situation can occur even without fuel filings, if the system goes into limp mode and errors P0251 and / or P1211 arise.
knobby1 wrote:Often with the Mk6 TDCi's it's the pump which causes a lot of the drama...they break down internally and spread metal flakes all through the system rendering the injectors useless. Pop the fuel filter off and cut it open and check for "sparkly bits".
The "Delphi" systems are known to be rather fragile.
Lord Knobrot
Julez wrote:
Apparently the whole fuel system is full of metal flakes and it all needs replacing including pump, all injectors, fuel filter, pipes, and the tank flushing at a cost of just over £6k.
Now I'm trying to get a full refund from the dealer that sold it to me, as the vehicle failed less than 3 months after buying it.
metalworker0 wrote:stupid question ..but what use is a fuel filter that does not catch theses flakes, and lets them through it?
Altransit wrote:metalworker0 wrote:stupid question ..but what use is a fuel filter that does not catch theses flakes, and lets them through it?
The filter cleans the fuel from the tank, and sends it to the pump. If the pump breaks up, the 'particles' don't travel through the filter, but go straight to the injectors.
knobby1 wrote:Altransit wrote:metalworker0 wrote:stupid question ..but what use is a fuel filter that does not catch theses flakes, and lets them through it?
The filter cleans the fuel from the tank, and sends it to the pump. If the pump breaks up, the 'particles' don't travel through the filter, but go straight to the injectors.
Just to add to this....the leakback lines from the injectors don't go through the filter either, they just dump back to tank....so your tank gets full of metal filings too....only then do they get sucked back up into the filter prior to going to the pump. This is why we ask people to cut their filter open and check for filings/metal flakes.
Lord Knobrot
wojciech wrote:In fact, the fuel from the injectors does not return directly to the tank, but goes to the pump. There it mixes in the low pressure section with clean fuel from the filter and only then its excess flows into the tank. This additionally increases and accelerates the damage in the pump. Anyway - the filings, if there are any, circulate through the most important, most delicate elements of the system - high disinfection pump and injectors.
A Injection line
B High pressure hose
C Return fuel from pump to tank
D Fuel supply
E Overflow line
F Fuel drain into tank
1 Injector
2 Common rail
3 High pressure pump
4 Fuel filter
5 Fuel tank
6/7 IDM and PCM - In later systems, together in one
driver
The heating oil is factory-colored and has almost the same properties as diesel fuel. The amateurs of easy money decolourised it with sulfuric acid and sold it to fuel stations as full-fledged diesel fuel. It was a tragedy to refuel with something like that. No injection system could withstand this.metalworker0 wrote:Yes, diagram explains how everything gets contaminated ...self priming and fuel return makes sure of that.
would you say super market diesel wares the pump out quicker ..and the saving is not balanced by the cost of replacement parts or a written off van in the future.
all the best.mark
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