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As part of doing the v I will soon be attempting the injector overhaul. I have purchased a kit that has everything apart from the ferrules and the hose. I have been told a few different things and wondered firstly what size / pressure rating hose do I need and can the ferrules be reused? Mr injector has a kit that supplies the hose and ferrules butŁ58 seems a lot to me. Any input gratefully received.
Nothing horribly exotic needed. Here in the 'States you'd simply go into your local auto parts store and ask for 'fuel injection hose', 5/16th inch. You'd likely end up with Gates or Dayco brand, SAE standard 30R9, which is fine and virtually ubiquitous.
Ferrules can be reused if you have the patience to remove them without damage. I don't . I snip 'em off with cutters to facilitate (the very careful) slicing of the hose to remove it from the nipples.
I recently pulled all the baskets from my extra injector set. A properly sized screw into the basket + a slide hammer had them out in no time. If you replace the pintle caps you can just break the old ones off. There is a guy in JAX, FL that sells a kit with hose and ferrules and all the seals for something like $50. I've found the ferrules online before but it took a bit of digging at the time. I did save the old ones but it is pretty tedious work with those old, hardened hoses. As Doug said, the SAE 30R9 stuff is everywhere, but perhaps that isn't the case in the UK. You want fuel injection hose, the stuff I got is 5/16" (7.9mm) Gates brand.
As part of doing the v I will soon be attempting the injector overhaul. I have purchased a kit that has everything apart from the ferrules and the hose. I have been told a few different things and wondered firstly what size / pressure rating hose do I need and can the ferrules be reused? Mr injector has a kit that supplies the hose and ferrules butŁ58 seems a lot to me. Any input gratefully received.
Buy the kit Brinny. I have used the guy and his stuff is top notch.
Buy the kit Brinny. I have used the guy and his stuff is top notch.
looks like im going to do that Greg. It’s about the same price from manners and sng don’t have them. Just getting a bit tight in my old age. Thanks to all who replied.
Ultrasonic parts cleaner would be helpful, you can get a cheap jewlery one if your not having the injectors 'professionally' reconditioned. I recently had a set done by Jaguar Injector Service in Florida the final result was:
, the final results are good. These flows are at 3 Bar pressure, and flows are for 60 seconds, static rate (full open) 100 % duty cycle.
Average 207 cc High 209 Low 204 Range 5 Deviation 1.82 %
Summary...It took some extra cleaning and soaking in a penetrant over night for some of these injectors to get them right. However, we now have a good flowing set of 12, and you don't need to buy any or sent any more for testing.
Still waiting on the parcel to arrive but it was a painless process. I'm not even sure how you'd test the flow rate accurately without professional tools.
I’m planning to pull my injectors this winter and have them reconditioned. V12 ‘89 HE with appr 180.000 km on the clock. Runs well, but could idle smoother.
The plan is to buy new hoses, o-rings, pintle caps and possibly ferrules and clean the injectors.
I like to do all work myself, but I’m not sure how to clean the imjectors and check flowrate and spray pattern. Is this best done in a professional workshop specialized in this, or can I do it myself ?
i have a new injector harness made with hi-spec silicone wires ready to install when I’m in there. I plan to place it in original position to keep the V fairly clean, I guess it should be OK with the silicone wiring.
An injector machine is useful for cleaning as well as checking flow as it will trigger the injector while the ultra sonic cleaning is taking place. I would not worry too much about flow rate numbers. As long as all injectors appear to spray correctly and balance out out (as in the tubes all fill up to around the same level), you should be in good shape. Without this setup. You might be able to clean the injectors by spraying carb cleaner though the injector while manually rigging a 9v battery to the injector to open the pintle. It's going to be a messy job and it's unlikely that you can check whether the injectors are balanced at the end.
I have a machine and just recently did this job on my 6 cylinder. The injectors were completely blocked after it had sat for several years.
Thanks Ron for this lead..for future reference. Here is a link to Faircloth Injector Service: https://www.jaguarfuelinjectorservice.com/
He charges $18 per injector. He has a link to a "burnt valves" caused by weak injectors. This is probably what is wrong with the 92 V12 I purchased.
Ron did you have a head jacking plate at your business that you sold; if so can you provide who it was?
An injector machine is useful for cleaning as well as checking flow as it will trigger the injector while the ultra sonic cleaning is taking place. I would not worry too much about flow rate numbers. As long as all injectors appear to spray correctly and balance out out (as in the tubes all fill up to around the same level), you should be in good shape. Without this setup. You might be able to clean the injectors by spraying carb cleaner though the injector while manually rigging a 9v battery to the injector to open the pintle. It's going to be a messy job and it's unlikely that you can check whether the injectors are balanced at the end.
I have a machine and just recently did this job on my 6 cylinder. The injectors were completely blocked after it had sat for several years.
Hi Alabbasi and Ronbros
I have looked into how much such an apparatus costs and how much Danish specialists charge for injector cleaning and testing, and the result is I can buy the cleaner/tester equipment, do my 12 nozzles and still save a fair amount compared to using a workshop to do the job.
You know how the machine works. Would you think that I as an ambitious DIY (and mech engineer) will be capable of getting the wanted result myself ?
What fluid is used in the machine ? I can find something from Bardahl, but I'm not sure if it is intended for adding to the fuel tank or use in the ultrasonic cleaner...
I have looked into how much such an apparatus costs and how much Danish specialists charge for injector cleaning and testing, and the result is I can buy the cleaner/tester equipment, do my 12 nozzles and still save a fair amount compared to using a workshop to do the job.
You know how the machine works. Would you think that I as an ambitious DIY (and mech engineer) will be capable of getting the wanted result myself ?
What fluid is used in the machine ? I can find something from Bardahl, but I'm not sure if it is intended for adding to the fuel tank or use in the ultrasonic cleaner...
BR Leo
Yes, In my professional opinion as someone who works in Software sales. I think that you can the desired results with this injector cleaning machine. I was in the same boat as you when I bought mine. I purchased a 75 XJ12C that was converted to propane and 2 parts cars to convert it back.I needed to find 12 good injectors from 36 and decided that the cheapest way to do it was to buy my own machine. I've since used it on a bunch of other cars like my fire damaged Porsche 951 and 928 and more recently my 6 cylinder XJ-SC. Ultra sonic cleaner will work fine with degreaser like diluted simple green and the flow tester uses kerosine which cleans and lubricates. You can buy a generic box of pintles, filters and o-rings for about $30 dollars which will rebuild all your injectors several times over.
Thanks Ron for this lead..for future reference. Here is a link to Faircloth Injector Service: https://www.jaguarfuelinjectorservice.com/
He charges $18 per injector. He has a link to a "burnt valves" caused by weak injectors. This is probably what is wrong with the 92 V12 I purchased.
Ron did you have a head jacking plate at your business that you sold; if so can you provide who it was?..
Steve i did not have a head lift plate, seems that PreHE heads came off easily(at least the ones i took apart.
are those burned valves HE engine, a known problem that with HE was the very high combustion temperatures, and the exhaust valves ran extremly hot, or the valves started to deform sink into the head, causing tight lash!
The picture of the valves is from Faircloth's site. He speculates they resulted from injectors being partially clogged. I think he implied they were from an HE.
Injectors 5.3 h.e. Help
. I snip 'em off with cutters to facilitate (the very careful) slicing of the hose to remove it from the nipples.
