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Discussion Starter · #1 ·
Hello all,

got a couple questions for you all after being sent this way from another forum, some of you may remember me from the saga of fixing my 2.0 tdci.

well recently I bought a st 2.2tdci, I bought it cheap in non running condition because the fuel pump was gone. So I’ve replaced the fuel pump, injectors and flushed the whole system to remove any swarf. I’ve also fitted a new Ford 2 micron fuel filter. After this the engine fired right up however it’s running like a bag of bolts, far too rich but the injectors are reading at 1 when their desired is 15.

so far I’ve triple checked the injector codes, checked the fuel pumps seated properly and monitored the fueling closely but nothings out of the ordinary. So my question is I took 701ds out and replaced them with 601ds while I couldn’t even find evidence 601ds existed online but they matched up perfectly to the old ones so is it possibly a electric issue with them not being compatible?
Also there are some concerns about maybe an issue with the timing having skipped a tooth forward during change but I can’t see how however is there any thing to look out for?

I know this is a long one so I appreciate anyone who takes the time to read and respond.
 

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Little Megger
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Of course, you don't know how much it might have been messed about with before you bought it. Have you got a compression tester you can use to get some idea of the overall state of the valves?
Are you getting any smoke?... If yes, what colour is it?
Can you get the original injectors, strip and clean them with a view to refitting them.
The above is just a brain dump over a cup of coffee..... hopefully someone else will come along with some ideas/thoughts.
 

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Discussion Starter · #3 ·
There’s black smoke on start up and when you rev it, I’m working at the moment but going to it tonight to reseat the pump and injectors just incase I’ve done anything wrong. The previous injectors were getting no pressure at all any fuel to them was coming straight back out the leak off hoses but I can give it a try as it’s only a 30 min to hour job.


I don’t have a compression tester but I’m fairly confident in the engine, it turns over well by hand and starts and idles without stalling just lumpy and very tractor like.

I appreciate your response and I’ll give it a go tonight.
 

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Mondeo Lover
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try blanking the EGR valve, its been known to cause these problems.
 

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Hi, I had this problem a while ago when changing all 4 injectors really lumpy kangarooing when driving but it did not stall , after about 20/30 miles it sorted itself out.I think the ecu just needs to relearn the new injector settings.
 

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dont listen to me, you'll have horsepower and
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I'll +1 blanking the egr valve at least whilst going through this diagnosing stage. I'll also 2nd glx's comment in giving the ecu time to relearn values. I'm assuming you have no fault codes?
 

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No , didnt get any fault codes appearing it just ran really lumpy for a few miles and improved the more you drove it .
 

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Discussion Starter · #8 ·
Hi chaps thanks for all the reply’s the EGRs been blanked and I’ve had it running for 25 mins but don’t want to do longer because of the metal rubbing sound that comes after about a minute idling. (Think I forgot to mention this.) There’s no fault codes on forscan but the cars quite badly overfueling fairly obviously as well with the big puff of smoke when it starts and more when it’s revved, it doesn’t stall just hunts for idle and sounds like a very unhappy engine.
 

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Discussion Starter · #9 ·
Me again all, after reseating everything the cars running a lot less lumpy. However there’s still a rattling noise and a squeak which is because the aux belt has come off the idler. Is there a way of fixing this without buying another specialist tool?
 

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Little Megger
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there's a sticky/pinned topic 2nd one down from the top all about the aux belt and stuff, but tbh, I bought the tool, it's not expensive and you're bound to use it again.
 

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Discussion Starter · #11 ·
Yes decided to buy the tool. I cut the current belt off to eliminate the belt being an issue (eg pulleys ect.) and I’m fairly certain the squeak has stopped but the engines very tappy coming from the rockers. It’s running a lot smoother now. (I haven’t been running it longer then 30 secs as I know the belt runs the water pump and the last thing I need is it overheating. There’s still a slight misfire but I’ve put that down to a possible vacuum leak after not replacing the inlet manifold gaskets when I took it off to do the pump. So I’ve got the tool and gaskets in the post.
My main concern now is the rattle from the rockers, doesnt sound like a stuck lifter more like they’re all stuck. Thinking maybe it’s to do with the car being sat so long that it needs to drag oil back up to them.
 

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You cut the belt off? Which belt?

Alternator/aircon drive belt on the left side of the engine as you look into the engine bay.
or..
The Waterpump/Powersteering pump which is on the right of the engine (gearbox side).
 

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Discussion Starter · #13 ·
Just the alternator and air con belt, the belt had seized behind the roller and shredded a lot. I also made sure to jot down the route it does before cutting it so I know for future fitting. The car is a project so I’m in no rush to move it I don’t mind it sitting there until the post arrives.

forgive me for my arrogance though I may have confused the aircon pump with the water pump in a previous post.
 

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Discussion Starter · #14 ·
New belt fitted engine happier a lot of rattle cleared but still can’t find much about the injectors. Does anyone know if the 601D injectors and 701D injectors are interchangeable?
 

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Mondeo Lover
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yes they are, the 601d were in the euro3 2.2 and st tdci, the 701d where in the euro4, plenty of people have put the 701d in the earlier 2.2 and st's
 

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Discussion Starter · #16 ·
I did mine the other way around, I’m wondering if that’s why I’ve got some compatibility issues. I replaced my 701d injectors with 601ds
 

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Mondeo Lover
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I think I read somewhere before that putting the 701ds in the earlier versions needed a remap to get them to work properly, so maybe the 601d in the later versions arent supplying the proper fuel flow needed?

I think that might be your problem, you can replace the 601d with 701d, but cant replace the 701d with 601d if that makes sense.
 

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Discussion Starter · #18 ·
That might be my fault then, my injectors are reading at a very low pressure in relation to their desired.
The next plan would be to try and get the previous injectors working properly in order to confirm this before spending another £200-300 on injectors. I could also look at remapping however I’m not sure these older injectors have the right duty cycle for the engine to work properly.
 

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Discussion Starter · #19 ·
Hi guys got the old injectors out to refit them and found an issue only on one.. the codes missing. I’ve attached pictures incase anyone can help but I can’t even read the QR code to get it.
Cosmetics Violet Audio equipment Font Tints and shades
Cosmetics Violet Audio equipment Font Tints and shades
 

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Mondeo Lover
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is there a sticker on the rocker cover or the timing cover that shows 4 codes?
Wood Font Paper Music Number


if there is a sticker showing that then have a look at the old injectors and see if they match up, if they do then they are original and youll get the code for that one on the sticker.
 
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