How to injectors 1978 V12
#1
04-14-2018, 07:59 PM
How to injectors 1978 V12
hi all,
any suggestions of how can test the injectors on my 1978 Daimler Double Six?
They will be out of the car.
I have a Rover 3500 and a Range Rover 4.6 HSE. Perhaps it would be possible to disconnect the fuel supply and electrical connection to a single injector on either of these vehicles and attach one Jag injector at a time and observe it's operation with the engine running. I am a little reluctant as I'm not sure of compatibility.
i do have an ultrasonic cleaner, should I immerse the injectors and clean them ultrasonically? Is there any disassembly to be done with the injectors.
The fuel tanks looked like they had come from the Titanic, so rusty were they. I am busy repairing them but fear serious clogging of the fuel system could have occurred, I do understand the filter is there to protect the system but one of the nylon strainers in the tank had failed.
I guess I could get an injectoin specialist to do it also, not sure of cost not that I begrudge spending money on the old girl.
Any suggestions or experiences greatly appreciated
Al
any suggestions of how can test the injectors on my 1978 Daimler Double Six?
They will be out of the car.
I have a Rover 3500 and a Range Rover 4.6 HSE. Perhaps it would be possible to disconnect the fuel supply and electrical connection to a single injector on either of these vehicles and attach one Jag injector at a time and observe it's operation with the engine running. I am a little reluctant as I'm not sure of compatibility.
i do have an ultrasonic cleaner, should I immerse the injectors and clean them ultrasonically? Is there any disassembly to be done with the injectors.
The fuel tanks looked like they had come from the Titanic, so rusty were they. I am busy repairing them but fear serious clogging of the fuel system could have occurred, I do understand the filter is there to protect the system but one of the nylon strainers in the tank had failed.
I guess I could get an injectoin specialist to do it also, not sure of cost not that I begrudge spending money on the old girl.
Any suggestions or experiences greatly appreciated
Al
#2
04-15-2018, 01:15 AM
Many variations on the same theme.
Out of the carm only way.
I used a length of timber, drilled 12 holes in it, sat the injectors in said holes. Timber secured in the bench vice for stability.
A length of fuel hose, any fuel hose, and about 12 inches long. Attached to the injector, filled with "carby cleaner".
2 suitable SMALL spade terminals on 2 lengths of wire. The SMALL spades on radio speakers are just fine.
Air compressor at 20psi, nozzle into the end of the hose, 1 wire to the -ve of a spare half decent battery, the other wire struck to the +ve terminal at the SAME time as the button of the air nozzle is pressed.
2 hand co-ordination is good here, haha.
Refill the hose as needed, and keep going until they all spray nice and clean.
DO NOT under any circumstances keep the voltage applied for any longer than a flash, the injectors will burn out real quick.
You will get the hang of it, just like ride a bike, it takes practice.
Inside the inlet of each injector is a SMALL bucket filter, standard Bosch thing, and when, and if, you dig them out, they will be destroyed by that digging, so new ones will be needed.
About an hours work, once out of the car.
If you are not planning on reinstalling in the very near future, end the spray action with a hose dose of WD40 or similar, thus protecting the tips and needles from atmospheric rust jamming them up.
Out of the carm only way.
I used a length of timber, drilled 12 holes in it, sat the injectors in said holes. Timber secured in the bench vice for stability.
A length of fuel hose, any fuel hose, and about 12 inches long. Attached to the injector, filled with "carby cleaner".
2 suitable SMALL spade terminals on 2 lengths of wire. The SMALL spades on radio speakers are just fine.
Air compressor at 20psi, nozzle into the end of the hose, 1 wire to the -ve of a spare half decent battery, the other wire struck to the +ve terminal at the SAME time as the button of the air nozzle is pressed.
2 hand co-ordination is good here, haha.
Refill the hose as needed, and keep going until they all spray nice and clean.
DO NOT under any circumstances keep the voltage applied for any longer than a flash, the injectors will burn out real quick.
You will get the hang of it, just like ride a bike, it takes practice.
Inside the inlet of each injector is a SMALL bucket filter, standard Bosch thing, and when, and if, you dig them out, they will be destroyed by that digging, so new ones will be needed.
About an hours work, once out of the car.
If you are not planning on reinstalling in the very near future, end the spray action with a hose dose of WD40 or similar, thus protecting the tips and needles from atmospheric rust jamming them up.
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Alan Lindsay (04-15-2018)
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