Dear all,
We have problem with starting engine after changing all injectors.
The new one are Bosch 0280150163 (EAC7875),
the old one Bosch 0280150035. We did it as regular maintenance, before that engine run quite well.
the only way to start engine is with unpluged vacuum from manifold presume sensor Lucas 73163A, but engine don’t work well on high Rpm.
Maybe manifold pressure sensor needs some adjustment? Or just injectors are not the right one?
Best regards,
Stan

 

I think that you have fitted injectors for the HE verion of the engine. The correct ones, I think, for the pre HE are:
Bosch 0280150035

Nice new set on UK ebay:
https://www.ebay.co.uk/itm/335481130...Bk9SR4TUqKezZA

Your engine and engine bay looks superb!

 

Hello Greg,
thanks for reply,
it was long restoration adventure :-)
We realize that problem is with injectors after installation, yes, the old one is 0280150035,
the new one 0280150163 , short research shows only difference is flow rate, (other spec are the same 3 bars, 2,4 oms), …035 has 300 g/min, …163 has 140 g/min.
Most probably this is problem.
Best regards, Stan

 

Stan,

Just wanted to say that your engine bay looks great!

Well done!

Paul

 

Thanks Paul,
yes, it looks great , but took almost 10 months.
We can find original injectors 0280150035 in e-bay, but the same injectors in aliexpress are for 1/3 price of ebay.
Maybe just cleaning and reconditioning of old original injectors will be the solution.


Best regards,
Stan

 

No doubt the injectors are the problem. But cleaning and refurbing the old ones will be fine, Stan. I have just refurbed a set of old injectors that were more than 30 years old and they flowed just like new ones. If it is useful, see this:
https://www.jaguarforums.com/forum/x...wanted-281293/

Mr Injector in the UK sells refurb kits which are excellent.
https://www.mrinjectoruk.co.uk/produ...pr_seq=uniform

This is the HE kit, but I think it will work on your injectors, maybe the hoses needing shortenig here and there. This is how I did mine recently:
https://www.jaguarforums.com/forum/x...roject-282762/

 

Hello Greg,

Thanks for reply
I found correct refurb kit for 0280150035

https://www.mrinjectoruk.co.uk/produ...ervice-kit-105

The question is how to open and clean injectors?
I can see kit include some filters?

BR
Stan

 

The kit comes with clear instructions. You clean them as I showed in my link in my last post.

 

If it helps anyone future wise this is the data I have for Bosch injectors.

You cannot open them without destroying them. You need to remove the filter cages that are in the inlet which is a destructive process (I used a self tapping screw), you need to remove the pintle caps (the plastic that protects the nozzle tip). I also filled mine with carb cleaner and sealed them, left them a day or two. Then treated them to an ultrasonic bath all whilst triggering the injector in pulses - do not be tempted to follow some of the YouTubers that hold them open you can burn out the coils doing this more easily than the YouTube experts would have you believe. I then ran specialised cleaning fluid through them in both directions i.e. back flushing (first) and forward flushing (second) at the same time as pulsing but it was all very 'farmer fix' and unprofessional, I still ended up scrapping some as the spray pattern was not improving (fuel system on my car was in really poor condition it seems).

I used an Autool CT160 but it doesn't come equipped to handle injectors that don't use O rings - hence the cobbled together unprofessional approach I ended up following - quite messy -

If you don't check the spray pattern at 2.5 bar then all you get is a feel good but achieve nothing more. This pressure is based on documentation I have (used Jaguar's references for 'Digital 'P' pressure sensing type) that identifies fuel pressure but there are conflicting sources. Inlet pressure regulates onto the fuel rail 45 psi, outlet maintains 36 in the rail. Details for the pre HE may be different but I do not have that information.

Depending on funds you may be better off sending them out to somebody equipped to deal with them - running one of these engines 'lean' at high rpm for even a short time will not end well.

 

Greg, Ben

thank you, you are great source with information :-)

Best Regards from Bulgaria
Stan