92 Max no spark on last plug

I am not getting any spark on the plug closest to the firewall. I am assuming it is plug 4. My distributor cap, rotor and plug wires are about 1 year old. Any suggestions would be extremely helpful. Thank you

even at a year old you could still have a bad plug wire, try throwin another on there and see what happens..start with the cheep easy stuff.

I agree w/texas. You might also pull the plug and take a look at it.

hi guys;; i had same problem in my truck , i also had to change plugs ; but i found putting in a colder temp plug champ rn10y worked better farther from thermostat lots of heat at back of head [ alignking ]

check your distributor, mine didnt have any sparkk there either. check to see if you have proper air gap on the reluctor wheel thingy where spark is made .
mine had a chipped tooth on it causeing it not to fire

Thanks for the replies. At further inspection the distributor did have a small fracture that I overlooked the first time around. Again thanks

My 90mm foul pulgs every so offten and im puttin my 4th set in ive not had the truck a year yet and i put new wires on it the 2nd set let me know if ya got any anwsers