What should I do with my injectors

Hi Don
I just got a mail from Robert in FIC
and he recommended that I buy the rock auto fj118 injectors and send them onto FIC, they would then flow match them for me.
So before I actually jump,
I have 2 more questions ( just in case you are not busy enough)
1 is flow matching necessary on new out of the box fj118 injectors.
2 . I have now seen fj118 injectors for sale from rock auto and I have also seen fj118 injectors for sale at Walmart for about 20dollars less. Would the Walmart ones be the same quality ? ( apologies if that is a daft question )
I have no personal familiarity with “fj118" injectors, but that does not mean they are not equivalent to the blue Bosch injectors. Except for the color, the one picture I could find superficially looked like the original, suggesting a direct fit. Although a picture does not reveal quality or confirm flow rates, the other poster's advice seems to make these a worth while bet.

FWIW, Amazon also offers the “fj118" injectors, and this might also apparently means they are potentially returnable. https://www.amazon.com/Standard-Motor-Products-FJ118-Injector/dp/B000C81FZ4 Not surprisingly, as mentioned elsewhere in this thread, the site indicates that these injectors do not fit the BMW csi or other models known to use the same injectors. However, since they apparently fit a ‘72 Mercedes 300sel, it still might be worth a go. You mention Walmart selling auto parts and perhaps the same or a better deal is available through that outfit. Frankly, it is not that difficult to try and see. With respect to other posters and their excellent advice, for your purposes, unless you are involved in serious competition, the need for flow matching injectors is overrated or misplaced. I strongly suspect that when djet equipped engines left the factory, they all used the same Bosch injectors, straight out of the box, without pre-testing for flow. Vehicles tuned by AMG or Alpina or RUF, where engines are tuned for maximum performance, are a different kettle of fish.

All told, unless you are familiar with the djet fuel delivery system, you might save yourself some grief or at least reduce your learning curve by consulting with knowledgeable owners or tuners a little closer to you - who might offer another set of eyes for your specific build. “Jaymic” springs to mind, and perhaps they can connect you with someone nearby, on "your" island. Regarding operating fuel injection system, while it would be preferable to find someone familiar with your exact model, other marques used the Bosch djet system, including Mercedes, Porsche and Volvo.

After this initial post I noticed DonL's concern. Having experienced numerous back problems and pinched nerves, I wish him a speedy recovery.

ebay934225.jpg
 
Last edited:
Fellow forum members- I’m in 5 weeks now with pinched nerves in my neck. My right arm is too painful to type. See you in December.
Hi Don
Sorry to hear that ,
I hope you feel better soon
Take care and mind yourself !!
 
I have no personal familiarity with “fj118" injectors, but that does not mean they are not equivalent to the blue Bosch injectors. Except for the color, the one picture I could find superficially looked like the original, suggesting a direct fit. Although a picture does not reveal quality or confirm flow rates, the other poster's advice seems to make these a worth while bet.

FWIW, Amazon also offers the “fj118" injectors, and this might also apparently means they are potentially returnable. https://www.amazon.com/Standard-Motor-Products-FJ118-Injector/dp/B000C81FZ4 Not surprisingly, as mentioned elsewhere in this thread, the site indicates that these injectors do not fit the BMW csi or other models known to use the same injectors. However, since they apparently fit a ‘72 Mercedes 300sel, it still might be worth a go. You mention Walmart selling auto parts and perhaps the same or a better deal is available through that outfit. Frankly, it is not that difficult to try and see. With respect to other posters and their excellent advice, for your purposes, unless you are involved in serious competition, the need for flow matching injectors is overrated or misplaced. I strongly suspect that when djet equipped engines left the factory, they all used the same Bosch injectors, straight out of the box, without pre-testing for flow. Vehicles tuned by AMG or Alpina or RUF, where engines are tuned for maximum performance, are a different kettle of fish.

All told, unless you are familiar with the djet fuel delivery system, you might save yourself some grief or at least reduce your learning curve by consulting with knowledgeable owners or tuners a little closer to you - who might offer another set of eyes for your specific build. “Jaymic” springs to mind, and perhaps they can connect you with someone nearby, on "your" island. Regarding operating fuel injection system, while it would be preferable to find someone familiar with your exact model, other marques used the Bosch djet system, including Mercedes, Porsche and Volvo.

After this initial post I noticed DonL's concern. Having experienced numerous back problems and pinched nerves, I wish him a speedy recovery.

ebay934225.jpg
Hi tochi.thanks for your help.
I am really really pleased that I have a great pool of people to help me out with advice on my many questions here.
I am not surrounded by tuning firms or many classic car restoration companies here in my country Ireland so it is a massive help to me to be able to raise my hand from time to time and ask for help.
Equally I try and offset that by posting as many “ how to posts “ as possible , so that I too can help someone.
I have no personal familiarity with “fj118" injectors, but that does not mean they are not equivalent to the blue Bosch injectors. Except for the color, the one picture I could find superficially looked like the original, suggesting a direct fit. Although a picture does not reveal quality or confirm flow rates, the other poster's advice seems to make these a worth while bet.

FWIW, Amazon also offers the “fj118" injectors, and this might also apparently means they are potentially returnable. https://www.amazon.com/Standard-Motor-Products-FJ118-Injector/dp/B000C81FZ4 Not surprisingly, as mentioned elsewhere in this thread, the site indicates that these injectors do not fit the BMW csi or other models known to use the same injectors. However, since they apparently fit a ‘72 Mercedes 300sel, it still might be worth a go. You mention Walmart selling auto parts and perhaps the same or a better deal is available through that outfit. Frankly, it is not that difficult to try and see. With respect to other posters and their excellent advice, for your purposes, unless you are involved in serious competition, the need for flow matching injectors is overrated or misplaced. I strongly suspect that when djet equipped engines left the factory, they all used the same Bosch injectors, straight out of the box, without pre-testing for flow. Vehicles tuned by AMG or Alpina or RUF, where engines are tuned for maximum performance, are a different kettle of fish.

All told, unless you are familiar with the djet fuel delivery system, you might save yourself some grief or at least reduce your learning curve by consulting with knowledgeable owners or tuners a little closer to you - who might offer another set of eyes for your specific build. “Jaymic” springs to mind, and perhaps they can connect you with someone nearby, on "your" island. Regarding operating fuel injection system, while it would be preferable to find someone familiar with your exact model, other marques used the Bosch djet system, including Mercedes, Porsche and Volvo.

After this initial post I noticed DonL's concern. Having experienced numerous back problems and pinched nerves, I wish him a speedy recovery.

ebay934225.jpg
hi tochi
Thanks for the advice.
Jaymic are in a different country to me. They are in England and I am in Ireland
. They are our closest neighbours to be fair so I do have the opportunity to reach out now and again and any time I have used Jaymic they have been superb !!
I don’t have many options here in my country, Ireland when it comes to specialists classic car support companies.
Traditionally we relied on the United Kindom for all of the specialists, be they chromers , re-upholsterers , parts re manufactures etc etc.
Now that Brexit has happened it is now a LOT more difficult to trade freely between our 2 countries.
My injectors are a prime example of that.
I could not find anyone in Ireland with the skills to work on them , but I did find a company in England that would work on them.
However because of Brexit they now, No longer work for customers outside of the United Kingdom.
The only way they would take my work on , was if I could personally bring the parts into their country and then they would work on them.
It seems crazy , but I can understand how a small specialist company don’t want any extra red tape or paperwork or import duties when it comes to dealing with customers outside of their jurisdiction. ( don’t forget I’m still in Europe , they are no longer in Europe )
Anyway I was on a trip to London so I brought my injectors with me , packaged up in my suitcase ready to go, and the first thing I did when I arrived in London was , I found a post office and posted my injectors off to the injector specialists .
They now will test them / work on them and will then send them onto a uk address.
My Friend lives in England and he is travelling home to Ireland at Christmas so his address was the one I used to return my injectors. ( even though the specialists found that 2 are leaking and 4 are seized )
Anyway, to sum it all up .
I am jumping through hoops to get my car back up and running and hopefully , I will get there soon .
So thanks again for all the advice,
Hopefully I will run out of questions soon :)
 
Last edited:
B,

I do understand that csi-djet part issues may be more difficult to resolve in the land of Blarney. My initial thought was that a handful of coupes and sedans reside on your island as evidenced by some of the posts here. I vaguely recall someone in Waterford and/or Derry, but no specifics. Regarding the injectors themselves, as mentioned before, there were several marques that used Bosch injectors, although not all injectors are interchangeable. However, a working knowledge of VW, Mercedes, Volvo or V-12 Jaguar injection systems (
) should easily translate to the csi’s injection parts and their operation. In other words, a shop or even a shadetree mechanic might be able to assist regarding your injection system.

As an FYI, SDoyle mentioned, each injector is a voltage operated valve. They are far from indestructible, but they are typically long lived, absent mishandling or exposure to the elements, e.g., water, heat, uv light. As Don noted, apart from the moving/mechanical function, the plastic is subject to degradation, but “your mileage may vary.” No guarantees, but getting each injector to “click” or “energize” and move the pintle is a good starting point for getting an engine that runs. Getting an engine to run will may be another matter, since injectors are only one link in a larger chain of components necessary for fuel delivery. (Hint, without a properly functioning fuel pump and pressure sending unit and ECU, the car may only function by coasting downhill.) In a general sense, once under (fuel) pressure, the injectors are (somewhat) self-cleaning.

Although you are in the midst of getting your injectors serviced, it still seems like a good bet to go with new injectors, assuming they are available.

Best of luck.

new-typed2.jpg
 
B,

I do understand that csi-djet part issues may be more difficult to resolve in the land of Blarney. My initial thought was that a handful of coupes and sedans reside on your island as evidenced by some of the posts here. I vaguely recall someone in Waterford and/or Derry, but no specifics. Regarding the injectors themselves, as mentioned before, there were several marques that used Bosch injectors, although not all injectors are interchangeable. However, a working knowledge of VW, Mercedes, Volvo or V-12 Jaguar injection systems (
) should easily translate to the csi’s injection parts and their operation. In other words, a shop or even a shadetree mechanic might be able to assist regarding your injection system.

As an FYI, SDoyle mentioned, each injector is a voltage operated valve. They are far from indestructible, but they are typically long lived, absent mishandling or exposure to the elements, e.g., water, heat, uv light. As Don noted, apart from the moving/mechanical function, the plastic is subject to degradation, but “your mileage may vary.” No guarantees, but getting each injector to “click” or “energize” and move the pintle is a good starting point for getting an engine that runs. Getting an engine to run will may be another matter, since injectors are only one link in a larger chain of components necessary for fuel delivery. (Hint, without a properly functioning fuel pump and pressure sending unit and ECU, the car may only function by coasting downhill.) In a general sense, once under (fuel) pressure, the injectors are (somewhat) self-cleaning.

Although you are in the midst of getting your injectors serviced, it still seems like a good bet to go with new injectors, assuming they are available.

Best of luck.

new-typed2.jpg
Hi
tochi the set I sent to the uk it now seems are not worth servicing to be honest and the fj118’s seems to be a far better alternative as they are brand new and not 50 years old and prone to seizing again and again.
I will settle my bill with the uk company and just use the cold start injector from what I sent them.
They were able to get it working.
I now intend to buy 6 new fj118s instead.
Thanks again for the help !
Regards
Barry
 
Back
Top