injector electrical problem tdci

[renagiw]

Hi i am new. Had a problem for a while now with intermittent fault on tdci 1.8 focus. It sometimes judders and sometimes white smoke. I have already replaced 1 injector to no avail.
I have had leak off tests done and it shows all is fine. Could this be the wiring loom, how would i check it or would i need an expert. Thank you

 

[tazz]

Ford diesels are known for the fuel problems, first task is to plug in a diagnostic lead & software, and check for any fault codes in the history. Main faults will be , turbo, fuel pump, injectors, airmap sensor, camshaft sensor and egr valve.

 

[renagiw]

Ford diesels are known for the fuel problems, first task is to plug in a diagnostic lead & software, and check for any fault codes in the history. Main faults will be , turbo, fuel pump, injectors, airmap sensor, camshaft sensor and egr valve.

No faults showing on diagnostic test, egr is blanked off its a mystery, seems worse in damp weather to me, sometimes runs fantastic for 5/600 miles then has an off day.

 

[tazz]

When you say no faults shown, is this handheld unit or full ford pro software...?...Software will show faults now and a fully history of previous faults

 

[ruston]

Is your fuel and filter clean, and are your supply pipes ok.

 

[renagiw]

When you say no faults shown, is this handheld unit or full ford pro software...?...Software will show faults now and a fully history of previous faults

Its been checked on a garage code reader it shows up an egr orobkem but that gas geen blanked off, i have changed fuel filter twice air filter etc.

 

[PEG]

If your EGR has been blanked off,is your ECU receiving correct feedback from that device? EGR should only function till up to temp,and operating/leaking under load,will usually give black smoke. Might i suggest a real-time code read using a quality analyzer with individual sensor parameter check capability. Also,a model specific forum may be of greater benefit. :yes:

 

[ruston]

If your EGR has been blanked off,is your ECU receiving correct feedback from that device? EGR should only function till up to temp,and operating/leaking under load,will usually give black smoke. Might i suggest a real-time code read using a quality analyzer with individual sensor parameter check capability. Also,a model specific forum may be of greater benefit. :yes:

As you say some analyzers are not worth the juice it takes to power them. White smoke is usually to much air / fuel starvation. forget all modern gadgets , diesels need the balance however they get it.