Ford Automobiles Forum banner
1 - 7 of 7 Posts

·
Registered
Joined
·
12 Posts
Discussion Starter · #1 ·
Hi People,
My first post on this site.
Fiesta 1.4 tdci 52 plate.
74K

Driving home from work 3 weeks ago, eac fail came up on the dash, and the car went to limp home mode.

Checked the "google" mechanic and therefore disassembled the accelerator pedal and cleaned the contacts. Still no joy. I then had a shoulder operation and the car has stood still for 2 weeks.
Re-googled eac failure and i then went round the engine bay and cleaned all the electrical connections. Car started ok and when i rev'ed the engine eac reappeared and limp home mode came back.

Got a ford specific diagnostic reader and the diagnostic was P0222 and P0227 with another electrical low circuit, sorry, can't remember which one!
Cleared the DTC's and restarted the car. Car ran fine, bit lumpy, but I did have to pump the diesel primer, as i found air bubbles in the clear feed pipe under the air filter box, when I first checked and cleaned the area, also the sealing clip for the egr pipe was off, as was the air feed pipe leading to the air box, the rear of the engine was sooted as well.

Drove the car up and down the road a few times, and the car seemed to settle.

Anyway, two days later, car not used in the meantime, i start the car up, pull away, and eac fail comes up again, and limp home mode kicks in, and i drive the 80 yards back home. Got the diagnostic reader out and it now has the code P0272.
[background=rgb(249, 250, 252)]Cylinder 4; contribution/balance fault I've read that this is either a blocked injector, or copper seals have gone.[/background]
[background=rgb(249, 250, 252)]I can't remember any chuff chuff sounds from the engine before.[/background]
No other codes.
I re-cleaned the connectors to all injectors, but still no joy.

New injector seal(s)?
New injector(s)?
New Loom?

Any help is greatly appreciated.

Thanks.
 

·
Super Moderator
Joined
·
19,005 Posts
Symptoms

Possible symptoms of OBD code P0272
- Engine Light ON (or Service Engine Soon Warning Light) - Engine Misfire - Engine Run Rough - Low MPG


Causes
Possible causes of OBD code P0272
- Fuel Injector #4 - Faulty or Corroded Fuel Injector #4 Connector - Plugged #4 Fuel Injector - Dirty #4 Fuel Injector


Possible Solutions
- Clean Fuel Injector #4 Connector - Clean Fuel Injector #4 - Replaced Fuel Injector
 

·
Registered
Joined
·
12 Posts
Discussion Starter · #3 ·
Thanks,
I'm going to follow the post showing how to remove and clean the injectors, and replace washers and bushes.
Will let the forum know how I do!!
 

·
Registered
Joined
·
12 Posts
Discussion Starter · #4 ·

On stripping the top of the engine to get to the injectors, the rear air flow pipe section was apart, therefore inducting dirty/wet air from the rear of the engine, bypassing the air filter, into the inlet manifold, the egr pipe was not sealed with a clip kicking out sooty exhaust over the rear of the engine area, the egr pipe was choked up with damp soot on entering the engine, and the inlet manifold is full of wet exhaust soot/(oil?) The inlet manifold pipe rubber gasket on cylinder no.4?(furthest right looking at the engine) had a big chunk out of it, and the manifold rubber gasket is not located properly and leaking oil out slowly.

There was some air bubbles in the clear fuel feed, and one off the fuel feed pipes was not connected properly in the system to the top right of the engine. On removing the Injectors. the leak feed pipe plastic connector had a crack in it and snapped off completely on removal.

The injector tips were choked up, and injectors 1, 2 and 4 had the same wet soot on them.

i cleaned them up carefully, along with the rest of the engine, egr pipe, inlet manifold and the inlet manifold pipes, carefully again to avoid any debris falling. these pipes had the same wet soot deposits.


It's now all sparkly and clean, getting the new bushes, seals and pipes tomorrow, then it's re-assemble time!! I will be making sure the rear air fed pipe is securely fitted and sealed in place, as plastic holding clip seems not very well designed, to stop any air/water ingress.
 

·
Registered
Joined
·
12 Posts
Discussion Starter · #5 ·
I still have code P0272!!

So i did a leak off test by making my own kit up.
I found out that cylinder 4 is nearest the cam belt not the clutch.
Cylinders 4 and 1 were chucking out plenty of diesel on tick over, whilst 2 and 3 weren't leaking any.
When rev'd at 2k, most i could get on limp home mode, 4 and 1 were dispensing fuel like a beer pump and 2 and 3 were leaking out slowly.
i swapped the leak off pipes around to run a comparison test, o.c.d'ish!! but better to run a couple of tests than rely on one, and the results were the same.
So off on the internet to find a local specialist in Somerset, but to get them tested, checked and cleaned was the same price as getting a warranty backed refurbished unit, so splashed out on two!! £245 with £30 surcharge to come back. inc vat and postage.
So here's hoping this is the end of my dilemma!!!
 

·
Registered
Joined
·
12 Posts
Discussion Starter · #6 ·
I still have code P0272!!

Changed the injectors, and did a leak back test which was spot on.
Black death on valve seats where it was sat for weeks?
Gunna try a egr cleaner-inlet valve spray after the turbo to see if that helps.
Any other ideas people???
 

·
Registered
Joined
·
22 Posts
Did you sort it out in the end?

Just a thought but have you checked the accumulator rail pressure sensor wiring plug is making good contact?
 
1 - 7 of 7 Posts
Top