[seereus]

Over the past few days I have noticed at times my Explorer will hesitate and damn near act as if its skipping/misfireing.

This problem seems to just come and go, come and go. At higher rpms you really don't notice anything.

I checked my plugs/wires, and noticed on one piston when I remove the plug wire, there is no noticeable effect on the engine, the misfire?? remains the same. Therefore I have now narrowed it down to the #3 cylinder.

I have listened to all of the injectors with a screwdriver, all have a very loud click click click click except the one at the #3 piston.
It is noticeably quieter, however, I do hear a click click click.

Is this injector clogged or broken????

I just dumped a bottle of Lucas Injector cleaner into the gas and currently it is sitting in the drive idling.

Opinions, options on other ways to clean would be appreciated.

 

[Bendrr]

What year Explorer and which engine?

I replace bum coil packs on 3 and 4 liter Fords all the time.

 

[seereus]

What year Explorer and which engine?

I replace bum coil packs on 3 and 4 liter Fords all the time.

99 with the V6

Would a coil pack affect just one cylinder?

 

[JMan]

What year Explorer and which engine?

I replace bum coil packs on 3 and 4 liter Fords all the time.

99 with the V6

Would a coil pack affect just one cylinder?

It could yes

I would start with this

compression check that cylinder
if good compression check for fire off that wire
if good fire next step is the fuel injector

BTW these are known for broken valve springs

 

[seereus]

What year Explorer and which engine?

I replace bum coil packs on 3 and 4 liter Fords all the time.

99 with the V6

Would a coil pack affect just one cylinder?

It could yes

I would start with this

compression check that cylinder
if good compression check for fire off that wire
if good fire next step is the fuel injector

BTW these are known for broken valve springs

I pulled the plug and I'm getting an orange spark when I touch to ground, should it not be more of a blue spark?