2004 Ford Focus 1.8TDCI

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2004 Ford Focus 1.8TDCI

Postby MJRVR » Wed Jun 11, 2014 1:00 pm

Hi
I have been to look at a Ford Focus thats a non starter.
I have scoped the injectors and all seem to be missing the main injection event?
I'm new to the scope so please bear with me.

They are Delphi injectors and before I got to the car two new ones have been fitted because of excess leak off.
It wouldnt start before they were fitted I have been told.

Could someone more knowledgeable than me have a look at the file please?

Am i right in saying there is only the pre event?

Many thanks on advance.
focus 1.8 tdci.psdata
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Re: 2004 Ford Focus 1.8TDCI

Postby Robski » Wed Jun 11, 2014 3:03 pm

They are Delphi injectors and before I got to the car two new ones have been fitted because of excess leak off

Where from ?

C2I's accepted & correct ?
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Re: 2004 Ford Focus 1.8TDCI

Postby MJRVR » Wed Jun 11, 2014 4:38 pm

Thanks for the reply Robski.

I dont know where they were from to be honest as I didnt ask.
I know they were new and not secondhand. Delphi boxes were on their bench.

They say they coded them in correctly.

Just to add no fault codes and fuel pressure cranking between 26,000 KPA and 34,000 KPA

Could too low a pressure cause the main injector event not to happen?

Was my capture any good?


thanks.
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Re: 2004 Ford Focus 1.8TDCI

Postby Robski » Wed Jun 11, 2014 5:51 pm

and fuel pressure cranking between 26,000 KPA and 34,000 KPA

Should fire on that, compression's sound good ?

Run on a sniff (timing (or relative comp & inj current)) ??

Why did the previous injectors fail ? Fuel filter internals dissected ? leak off's rechecked ?

Funny feeling they ain't spraying !!!!
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Re: 2004 Ford Focus 1.8TDCI

Postby MJRVR » Wed Jun 11, 2014 7:15 pm

Thanks Rob.
Compressions sound good. but will test for sure with gauge tomorrow.
Runs fine on sniff.

Found some more info:
Came in as non runner, Petrol was suspected to have been put in by mistake,
Customer denies it. Tank drained, fuel replaced, still trying to fire on cranking but wont run, also had a direct fuel feed into top of the pump, still the same.
Fuel filter not checked for swarf already binned when I got there.

Leak off rechecked, one injector draining a little more than the other 3.

Garage knew I had a pico so asked me to scope the injectors as didnt want to buy a 3rd injector if it wouldnt allow a start. theory being that if the fuel pressure appears ok it should run? One injector with a leak off problem would lower the pressure?

Can run a relative compression check and injector current test sometime tomorrow.



Many thanks.
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Re: 2004 Ford Focus 1.8TDCI

Postby Robski » Wed Jun 11, 2014 8:52 pm

Petrol was suspected to have been put in by mistake

At this point I would be inclined just to run a pump proof test, so you know where you are with the job for required fuel pressure under load.

Never discount injectors which are 'new' from the box from certain outlets !
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Re: 2004 Ford Focus 1.8TDCI

Postby MJRVR » Wed Jun 11, 2014 9:21 pm

Rob

The pump proof test, is that with the IMf ect disconnected, fuel feed direct into the pump and measure full obtainable pressure?
If so it was about 125,000KPA from memory.

Will run some more tests tomorrow.

thanks again
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Re: 2004 Ford Focus 1.8TDCI

Postby Robski » Wed Jun 11, 2014 9:50 pm

why would you want a remote feed to the HP pump to proof it ? wouldn't you want to confirm the LP side ??
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Re: 2004 Ford Focus 1.8TDCI

Postby MJRVR » Thu Jun 12, 2014 6:44 am

I confirmed the LP side earlier.
The remote feed for me eliminated potential faults on the LP side.

Not sure what you mean by a proof test though.
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Re: 2004 Ford Focus 1.8TDCI

Postby Robski » Thu Jun 12, 2014 12:50 pm

Not sure what you mean by a proof test though.

Complete system in situ, LP/HP, to maximum pressure. If not reached then eliminate IMV with a dummy, then injectors from the rail.Then LP via remote feed if you don't have a gauge with sight block to 'T' in to challenge the LP suction side.
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