2.4 140 injector issue / rough idle

[dymondaudio]

Driving home the engine started really rattling, instantly knew it was injector related.

When I got home I checked the bolt on the back two injectors and it was really loose, I tightened it up, I didn't have a torque wrench so I just did them up 'tight'

The front two seemed a little loose so I tightened that bolt too.

Now it's idling really rough. Would over tightening cause it to rough idle?

There is also a small amount of diesel/oil on top of each injector so I guess it's been loose for a while (I have only owned the van a week!). I'm thinking of renewing the injector seals (with new bolts and the correct torque setting) and go from there but any advice would be appreciated.

2.4 / 140 / 90k miles

[Airthies]

First before doing anything else...
Do injector leak off test, (4mins at idle - 20ml to 40ml)
Then injectors out and get them tested if you want.
Cut and replace injector washers,
Check clamps are the upgraded ones and replace if required,
Replace injector bolts (there stretch bolts and should only be used once)
Replace leak off pipe seals to be on the safe side.
Make sure injectors go back in the same hole they came out of and code in any new injectors.
SCV & PRV if you want to.
Do pump and pilot learns and reset counters.
Jobs a goodun

Clamps and bolts from Ford
Injectors, copper washers, seals, SCV & PRV from PFJones.


Sent from my A55ho11 using Crapatalk

[dymondaudio]

First before doing anything else...
Do injector leak off test, (4mins at idle - 20ml to 40ml)
Then injectors out and get them tested if you want.
Cut and replace injector washers,
Check clamps are the upgraded ones and replace if required,
Replace injector bolts (there stretch bolts and should only be used once)
Replace leak off pipe seals to be on the safe side.
Make sure injectors go back in the same hole they came out of and code in any new injectors.
SCV & PRV if you want to.
Do pump and pilot learns and reset counters.
Jobs a goodun

Clamps and bolts from Ford
Injectors, copper washers, seals, SCV & PRV from PFJones.

Sent from my A55ho11 using Crapatalk

Thank you for the info, how much should I expect to pay for the clamps and bolts from Ford?

[Airthies]

Thank you for the info, how much should I expect to pay for the clamps and bolts from Ford?

Not as much as you'd think
Bolts are about £6 clamps £20ish
Don't quote me on it though.
B
For stuff from PFJones best give them a call not all things are on their website.

Sent from my A55ho11 using Crapatalk

[dymondaudio]

My cylinder balances are reading as follows (cold)

1: 2. Something
2: 2. Something
3: -6. Something
4: 2. Something

Does this indicate that injector 3 is screwed?

[Airthies]

My cylinder balances are reading as follows (cold)

1: 2. Something
2: 2. Something
3: -6. Something
4: 2. Something

Does this indicate that injector 3 is screwed?

No it shows its blocked or restricted operation.
You need to take off leak off pipes, and connect hoses to each injector and measure what comes out after 4mins.
Run it till all 4have some in the bottle and hoses are full. Empty bottle and then restart and time the test.
Mane sure you plug the leak off pipe ends as that'll let in air and the van will stop

Sent from my A55ho11 using Crapatalk

[andz327]

If there's a diesel leak at injectors it'll be the little green O-ring leakoff seals which are cheap from ford dealers on ebay(if none near you)
Sounds like previous owner has been fookin aboot with injectors

ANDZ

[dymondaudio]

ok so I did the leak off test today. I made sure the tubes were as purged as possible.

Cylinder's 1, 3 & 4 seem pretty even. So does this indicate an issue with cylinder 2? And how can I fix the cylinder imbalance on cylinder 3 (see above) ?

Any advice welcome!

[dymondaudio]

hopefully the image is the correct way up now

Or not!!! Anyway, you can see cylinder 2 is different

[knobby1]

Can't quite read the quanties in your pic. They should be between 25-40ml per injector over 4 mins at idle.

If in between those limits you should be good to go.

Lord Knobrot

[dymondaudio]

My cylinder balances are reading as follows (cold)

1: 2. Something
2: 2. Something
3: -6. Something
4: 2. Something

Does this indicate that injector 3 is screwed?

No it shows its blocked or restricted operation.
You need to take off leak off pipes, and connect hoses to each injector and measure what comes out after 4mins.
Run it till all 4have some in the bottle and hoses are full. Empty bottle and then restart and time the test.
Mane sure you plug the leak off pipe ends as that'll let in air and the van will stop

Sent from my A55ho11 using Crapatalk

Can injector seals cause this massive imbalance in cylinder 3? It's running like a bag of nails at the moment. What causes an injector to become blocked / restricted other than failure of the injector itself?

[knobby1]

Can injector seals cause this massive imbalance in cylinder 3? It's running like a bag of nails at the moment. What causes an injector to become blocked / restricted other than failure of the injector itself?

No, the seals are unrelated to injector performance, they basically just act as a compression seal between the injector and the cyl head. The "other" upper seals just seal the oil and crankcase fumes from getting out between the rocker cover and injector.

Injectors themselves can block internally and fail electrically. We must remember that these injectors are running at upwards of 30,000psi during normal operation, I'm surprised they last as long as they actually do.

Lord Knobrot

[dymondaudio]

Can injector seals cause this massive imbalance in cylinder 3? It's running like a bag of nails at the moment. What causes an injector to become blocked / restricted other than failure of the injector itself?

No, the seals are unrelated to injector performance, they basically just act as a compression seal between the injector and the cyl head. The "other" upper seals just seal the oil and crankcase fumes from getting out between the rocker cover and injector.

Injectors themselves can block internally and fail electrically. We must remember that these injectors are running at upwards of 30,000psi during normal operation, I'm surprised they last as long as they actually do.

Lord Knobrot

Ok so chances are that the injector in cylinder three is knackered

[dymondaudio]

looking around for a new injector, on the top of the injectors there is a number beginning with F which I believe is the correction factor?

The only other number I can see is 06K03660 Does this mean that the part number is on the side of the injector and needs to be out in order to check it? I was hoping to purchase one of thesehttps://www.ebay.co.uk/itm/FORD-TRANSIT ... 2164428212

But want to make sure it's the correct one especially as mine is the 140 The compatibility checker on the listing says it fits the 140

[knobby1]

looking around for a new injector, on the top of the injectors there is a number beginning with F which I believe is the correction factor?

The only other number I can see is 06K03660 Does this mean that the part number is on the side of the injector and needs to be out in order to check it? I was hoping to purchase one of thesehttps://www.ebay.co.uk/itm/FORD-TRANSIT ... 2164428212

But want to make sure it's the correct one especially as mine is the 140 The compatibility checker on the listing says it fits the 140

The 6C1Qxxx numbers on the side are indeed their part number. Yes, the "F" number is the correction factor.

Lord Knobrot