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Hello all as the title I have this Smart fortwo that goes two cylinders.
Smart 799cc Diesel 30kw engine number 61
The evidence I have are the following control spray injector disassembled with negative control continuity? from the ecu to the injector connector.the power control 1.24 volts,the command was not able to check,the tools available to only a multimeter.
The injectors are usually not powered at 12 volts?
Someone can pass me a wiring diagram?
Another thing is usually these units year this kind of problem ?you can repair it? If you find from the demoman a control unit is clone?
The injector indicted I did try from the pompista and and running.
Thanks in advance to those who help me.
dariuccio
19-03-2014, 21:00
if the wires are thick enough it works on 12 volts, but I think I will anyway.
have you checked the wiring? if the injector works, the problem is in the drive, and then in the wiring or the ecu, before you do, check, though, that all took
the ecu are not dirty or oxidized
Thanks for getting back to me,the continuity? between the ecu and the injectors and place ,in the engine control unit, I can not see the errors,the command as I use it with the multimeter?
there should be a positive or negative fixed under the framework, and a power supply or negative (depends on what? fixed but most of the time the hard ? positive)
I believe, however, that you need the oscilloscope
I doubt that I ordered the wrong scale with the multimeter ,tomorrow I try again.
the pulse to the injectors ? so fast that the meter is not able to detect, for this, we need the oscilloscope
lightning
19-03-2014, 22:03
Clamp ammeters not c'? do I do it?
dariuccio
19-03-2014, 22:15
I honestly do not know but try it will not cost you anything
I don't think I own that can't see the signal with a multimeter or clamp meter. You must have a good oscilloscope to see it. Are you sure that the problem is on the injectors? Candles and compression are ok?
XmaCchinista the Smart and Diesel I removed the injector ? connected to the car electrically and fuel,not pulverizing the diesel fuel
You goa tried to change of place to the injector
No to? I had another injector and makes the same joke,even with his
I'm at the point if the continuity of the wiring and good will be the ecu. To be safe you should make a diagnosis!
XmaCchinista the Smart and Diesel I removed the injector ? connected to the car electrically and fuel,not pulverizing the diesel fuel
you have also tried to swap the pins?if the electrical connection of the other injector sputters then if the wiring ? ok replace l ecu.
Hello, if I find one from a demoman, you can clone it? With which tool you are able to make these transactions and make adjustments
( which the procedure to be able to clone this unit and the tools to use.)
you you clone trnquillamente *****s, on pin 1 of the injector, you have cil negative command. instead on pin2 you have the positive in common to the other injectors
X already? then yesterday I checked the continuity? and c'? the,the doubt, and that every negative cable there are two wires soldered and with termorestrigente this x three,the positive and unique .I don't know if I explained it well.
you exact controlled those welds for good pin ecu side 63-64
you have found the problem...
I can not understand why? the power injector, and always 1 volt
But on the cylinders that work well see how many you find? You should find with a car in the bike about 18 -20 volts . If on the injector that is not a don't find these volts and continuity? the wiring and ok be safe on the central
18-20 volts ? absolutely impossible. the injectors work or 5-volt or 12
Don't have to see the fuel injectors of a common rail as petrol engines where you have 12volts in comume and a comamdo to mass open the injector. In modern diesel pressures in the game, the multi injections per cycle are in need of a command more energetic both as a voltage and as a current.this makes that each injector should have a control circuit that is able to bring the voltage up to 80volts I hope I was clear
Hi all,I update ,I took the ecu to a specialist ,as I know something more? will update.
sorry, but by a system of 12 volts, a maximum of 14 with the engine running as they exit 80 volts?
I on my turbo diesel, I measured the voltage to the injectors and ? 12 volts with the motor at a minimum, at full load; and c'? a positive under the framework
common to all four, and the command is negative, the ecu alternates to the injectors.
? the same pressure of the diesel oil that helps to open the injectors, the solenoid is to be attached to the outlet ? a simple magnet to bring the needle
closure at the top and open the holes
Hello, I try to explain a bit ,then the petrol system and different c'? the positive and the negative command.however, for diesel and different there are from four to five injection of diesel fuel, and then the control unit must manage the various operation strategies for the 80 volts is used for opening and maintenance of the injector.I hope I explained it well.
It is true that the central and fed to 12volts but in the inside there are comdensatori that you load up to 80 volts. Think that um piezoelectric injector works with 150 -170 time and 10ah I hope I was a help
Hello all.will update the specialist I gave a revised ecu for? I don't understand why? makes me this joke,when put in motion, and the game suffered for it? two,I mounted an injector outside and I saw that squirted,I tried again and not spraying the pi? now there are two errors are active P1403-pressure exhaust gas recirculation ,? unknown P1057 and eobd does not log errors.
but always the same cylinder that should not be? the current 18 - 20 volts arrives at the injector . trying to reverse the injectors to let loose of the injector outer
I repeat that according to me the problem is in the wiring
the measure in this way, by a**** to the other with a multimeter set to 200ohm me 00.2 ohms.the wire from the injector part from the plug,and then get in the harness splits in the shrink tubing going to fit into two different pins.
Test the injectors to the bench with a battery, if you feel the tic when the food work and the briblema can be the wiring. If you do not feel the use of ict are to change
Continuing the previous post to me, you're disconnected the page,
Replaced the ecu old,I mounted an injector outer and seems to spraying,I changed the injector from the second cylinder to the first one, and sprays . What do you think?
Hello lightning as I said before, test the injectors on the bench 90 % that one and jumped
Hello lightning begins in the meantime to restore the compression in the cylinder
hello lightning, if you don't have compression in the injector can spruzzarci in a bucket of the stuff, but the car does not go. check the compression, maybe you have a valve that remains open. fixed the compression you see the rest
Without putting it in place.
while I was reading I thought about the engine :-)
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