I accidentally, and unknowingly, dropped a tiny piece of solder into injector #4. I figured out I was running on three cylinders and replaced injector #4 with a brand new injector.

Now I am still runnning on three cylinders. Could I have shorted the injector wiring out while the solder short-circuited the injector?

 

I would be checking for spark......and if you want to check for the injector signal, use a tester on the wires right to the injector.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chimmike &raquo;</TD></TR><TR><TD CLASS="quote">I would be checking for spark......and if you want to check for the injector signal, use a tester on the wires right to the injector.

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x2. Check for spark first. If spark isnt detected then try to work that out before moving on. If it is sparking then check the wires on the injector

 

If you short out an injector, you would blow the FI/E fuse, and none of them would work, If it shorted to ground, it would be on constantly, and never turn off until the key is off, eventually burning it up. Check the resistance of the injector coil, see if burned open.

Pull the plug and see if its wet, if it is, then you have a spark issue. Plug and wire would be the first suspect. If to no avail, check the cap for water intrusion/corrosion.

Wire damage would be at the bottom of the list, unless there is some wire modification which you have not brought up.

 

Could I have damaged the ecu? My coil is new and the other three injectors work.

 

We could go on and on about what the problem could be. If you want to move forward and solve the issue, do the inspections that are listed above. They are all easy and require very little work. If you do not know how to do these checks, ask us.

Cheers