Technical 2009 fiat panda miss fire after changing spark plugs

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Technical 2009 fiat panda miss fire after changing spark plugs

Looks like the wire is broken in the injector.. I’ve found a cheap 2nd hand fuel rail with 4 injectors.. it’s off a 1.2 and mines a 1.1. Are these the same.. when I’ve found new injectors online it says for either 1.2 or 1.1.. any advice is appreciated
 
Looks like the wire is broken in the injector.. I’ve found a cheap 2nd hand fuel rail with 4 injectors.. it’s off a 1.2 and mines a 1.1. Are these the same.. when I’ve found new injectors online it says for either 1.2 or 1.1.. any advice is appreciated
If it's cheap and gets you out of trouble it has to be worth a punt.:)
 
Picture would help

The harness is replaceable

Screenshot_20251007-195708.png


The injectors are replaceable, individually


Not sure how you could damage it changing the spark plugs, there pretty robust and well buried, in fact they are a pain to undo
 
Probably still okay

Worst cast it looks like just the harness
Screenshot_20251007-202021.png


You need to push this bar in to release the connector


You really don't want to be touching anything else

The fault was introduced during the spark plug and thermostat change, try and only retrace and test your steps, the more you touch the less likely you will know whether a new fault is causing the problem


Too late now but if you test after each step or two, if there is a problem you only have to go back a step or two
 
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Great we can test a few thing controling the injector


Multi meter on volts

One of the wire going to all the injectors will be the same colour that's the power feed

If you remove the connector and place a pin in this terminal it should measure voltage between here and the negative battery terminal

Multi meter on ohms the two pins on top of the injector should measure just under 15 ohms

The computer control wire to the ECU is a little more tricky to check, let's hope the first two checks find the fault
 
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