ive been tring to fix a 94 v6 stang for a while now ive repalced every censor,module,compression tested,replaced the entire fuel system(replaced the cylnder 2 injector only)checked for vacume leaks(sprayed starting fluid over entire motor at least 4 cans in the past 1 1/2)replaced computer had other people look at to get other opinons searched every thread online ford dealership cant figure it out im lost it starts fine runs just has a bad miss in the bottom end of the rpms.when i bought the car it was already doing this(probly why i got the car for 300) it actuly fixed it self for a while like 3 months but its back at it.i just bought an m90 setup but i have to get this fixed first plese help
miss fire in cylnder 2
- Thread starter t.shirley
- Start date
wmburns
SN Certified Technician
Confirm the problem only happens in cylinder #2. What is the condition of the #2 and #6 spark plug? Try swapping #2 and #6 at the coil pack to see if the misfire moves to a different cylinder.
As a reminder, the V6 coil pack cylinder pairing is 5-1,3-4,2-6.
Try this old racer's trick. Run the car in a totally dark location. Look for the blue hue indicating arcing. Inspect the spark plug wires for white spots which is evidence of arcing. The routing of the spark plug wires is important. Are the factory stand offs and loams in place? Is number two touching anything metal or routed in long parallel runs with other spark plug wires?
Don't cut corners on the spark plug wire arcing angle. I have helped several V6 users recently with misfires on #2. They swore that the wires were routed correctly. When asked to post a picture of their engine bay, within seconds it was obvious that the wires were touching various metal parts. One guy even used bread ties to "dress" the wires together through the entire length of the run.
Post #23 Cylinder 2 misfire....darnit - Ford Mustang Forums
Consider buying/renting a set of "noid" style test lights. Place across each injector to confirm that the injector is firing.
What were the results of the compression test?
As a reminder, the V6 coil pack cylinder pairing is 5-1,3-4,2-6.
Try this old racer's trick. Run the car in a totally dark location. Look for the blue hue indicating arcing. Inspect the spark plug wires for white spots which is evidence of arcing. The routing of the spark plug wires is important. Are the factory stand offs and loams in place? Is number two touching anything metal or routed in long parallel runs with other spark plug wires?
Don't cut corners on the spark plug wire arcing angle. I have helped several V6 users recently with misfires on #2. They swore that the wires were routed correctly. When asked to post a picture of their engine bay, within seconds it was obvious that the wires were touching various metal parts. One guy even used bread ties to "dress" the wires together through the entire length of the run.
Post #23 Cylinder 2 misfire....darnit - Ford Mustang Forums
Consider buying/renting a set of "noid" style test lights. Place across each injector to confirm that the injector is firing.
What were the results of the compression test?
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