Found my miss-fire reason - injector wiring has crimp connector
Posted: Wed Feb 06, 2019 8:26 pm
I have had a missfire for a while now, changed plugs, changed leads, changed the oxygen sensor and it always ran well for a few weeks after that....but it always went back to random miss fire.
Sometimes it would happen on start, other times it would happen when I was cruising down the freeway...it would come and go as it pleased...
Finally it started and stayed there for a week....and I got sick of puttutututututing everywhere....so I got out and looked on the side of the road. Touched the wiring loom to the #1 injector and it ran nice.....touched it again and it started to miss fire again.
I starred at it, the words 'are you f'ing serious' spilled from my mouth. Looking closed I can see under the black tape is two barrel crimp connectors for the injector....both wires are barrel crimped, corroded as anything inside...so I jammed it in the connector to get it running and so it stays for now.
My questions is why would someone do this? I notice that injector 4 is also this way but 2 and 3 look unmolested...but I will check when I get time to fix it.
Fixing it, do I just strip and solder the cables and then shrink tube them or should I do something different? Short term easy fix or long term permanent repair?
Sometimes it would happen on start, other times it would happen when I was cruising down the freeway...it would come and go as it pleased...
Finally it started and stayed there for a week....and I got sick of puttutututututing everywhere....so I got out and looked on the side of the road. Touched the wiring loom to the #1 injector and it ran nice.....touched it again and it started to miss fire again.
I starred at it, the words 'are you f'ing serious' spilled from my mouth. Looking closed I can see under the black tape is two barrel crimp connectors for the injector....both wires are barrel crimped, corroded as anything inside...so I jammed it in the connector to get it running and so it stays for now.
My questions is why would someone do this? I notice that injector 4 is also this way but 2 and 3 look unmolested...but I will check when I get time to fix it.
Fixing it, do I just strip and solder the cables and then shrink tube them or should I do something different? Short term easy fix or long term permanent repair?
. I use the butt-join soldered connectors, with low temp solder in a shrink wrap tube. Hit it with the heat gun and you have a good sealed joint. Given it is on the engine and subject to a lot of vibration, and extra layer of shrink wrap might help prevent the vibration affecting the soldered joint.
