Changing/overhauling injectors

[Roberto]

If you remove them yourself be careful: the upper metal pipe, the one connecting the four injector tops, has *two* washers for each injector.
I had mine serviced, the diesel shop just replaced the nozzles and kept the injector bodies.

 

[Jim@sea]

When I had a boat in France I needed the injectors checking/cleaning and went to a big truck place and asked where they sent their injectors to for servicing, so after going there I asked if I could watch them do it and to my surprise the machine they used was a Lucas/Hartridge Machine, which apparently were sold thought Europe. So you could find a firm out there to do it.
Meanwhile back in the UK (and you are also in Lancashire) I was recommended a firm in Preston called Diesel Bob. You could also post the injectors to him.

 

[Heckler]

When I had a boat in France I needed the injectors checking/cleaning and went to a big truck place and asked where they sent their injectors to for servicing, so after going there I asked if I could watch them do it and to my surprise the machine they used was a Lucas/Hartridge Machine, which apparently were sold thought Europe. So you could find a firm out there to do it.
Meanwhile back in the UK (and you are also in Lancashire) I was recommended a firm in Preston called Diesel Bob. You could also post the injectors to him.

I used to use a hand pump one of those, big pressure guage, pump up to 180 ats for the rolls royce eagle straight six and get to the point where they would open, "creak"
S

 

[ffiill]

.
Peter
they are held in by two nuts and years of grime! Take the pipes off, undo the nuts and use a small pry bar or big screwdriver under the ears to ease them out. They seal with copper washers around the nozzle. I used to fettle the nozzles my self or in rare cases replace them. Bring them home and find a good old fashioned diesel shop to do it. If they change the nozzles about £50 per inj, if not, a bit cheaper. Use new copper washers to refit and make sure the holes are clean, any carbon will stop them sealing properly and combustion gas will leak out, phu phut phut!
S

I agree- a local injection specialist will test the blow off and if necesarry fit new tips.
If this were a road vehicle certainly by about 80000 miles on a traditional indirect injection diesel.

 

[DownWest]

My Espace manual recons checking at 100,000km.. At 320,000. the def now need doing; On the bay, set of nozzles cost £70 quid. Nuff bits around the w/shop to set up a test rig. Crack at 125 bar.
On a boat, bit of moisture in the fuel can reduce the life considerably. So, if in doubt, change the nozzles, the rest of the injector should be good.

 

[bobgarrett]

As someone else has said, Volvo say they need to be checked after 400 hours. At my last service (by a Volvo dealer) the engineer said it was part of the schedule but was not necessary at that time. Now I have done 950 hours (went a long way last year), so should they be checked now or, as others have said, wait until there is some smoke?

 

[Corribee Boy]

I've just had the single injector on my BMW serviced: a local dealer (blue overalls, no pipe) checked it for free and showed me the poor spray pattern. He then charged the princely sum of £30 to provide and fit a new nozzle, clean the whole thing, and re-calibrate.

I haven't refitted it yet, so I can't say if it's solved the sooty transom syndrome, but it seemed like a cheap thing to try.

I've come across some bits and pieces on the web about the catalytic effect of copper and brass pipes and fittings on biodiesel and low-sulphur diesel which apparently makes it more corrosive on the nozzles, so comparison with road vehicle using fresher diesel, might not be very relevant to service intervals - if it's not an urban myth.

 

[vyv_cox]

I had all four injectors from my BMC 2.2 serviced by a specialist company in Llay, near Wrexham. I had no idea how many hours they had run but several were dripping fuel and tickover was very lumpy. It cost £100 for the four, which included all new nozzles, copper washers throughout. After replacement one was still leaking, the company found a faulty washer due to slag in the copper, most unusual. Engine ran far better afterwards and no leaks.