# Cylinder 2 and 4 not firing **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** focus, ford\ **Created:** [July 31, 2009, 12:45am UTC](https://community.cartalk.com/t/cylinder-2-and-4-not-firing/34266 "2009-07-31T00:45:15Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![dave13](https://avatars.discourse-cdn.com/v4/letter/d/71e660/32.png) [@dave13](https://community.cartalk.com/u/dave13)\ **Post date:** [July 31, 2009, 12:45am UTC](https://community.cartalk.com/t/cylinder-2-and-4-not-firing/34266/1 "2009-07-31T00:45:15Z")
i found out the cylinders 2 and 4 wasnt firing on my car!!i changed the spark plugs and wires and it is still missing and losing power and will tend to over heat!!!frustrated is all i can say!!!please help!! ---
**Author:** ![wizard](https://avatars.discourse-cdn.com/v4/letter/w/a87d85/32.png) [@wizard](https://community.cartalk.com/u/wizard)\ **Post date:** [July 31, 2009, 12:47am UTC](https://community.cartalk.com/t/cylinder-2-and-4-not-firing/34266/2 "2009-07-31T00:47:40Z")
Not all cars are the same. Make model year mileage would help. ---
**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\ **Post date:** [July 31, 2009, 12:53am UTC](https://community.cartalk.com/t/cylinder-2-and-4-not-firing/34266/3 "2009-07-31T00:53:34Z")
Yes, and give us more detail about “tend to overheat.” ---
**Author:** ![dave13](https://avatars.discourse-cdn.com/v4/letter/d/71e660/32.png) [@dave13](https://community.cartalk.com/u/dave13)\ **Post date:** [July 31, 2009, 1:43am UTC](https://community.cartalk.com/t/cylinder-2-and-4-not-firing/34266/4 "2009-07-31T01:43:06Z")
its been overheating after driving the car for a bit and then sometimes it will not overheat!i dont know!!its a 4 cylinder and actually is my moms im trying to help her and truthfully getting a little frustrated!!cylinder 2 and 4 not woroking right ,losing power!!help!!! ---
**Author:** ![dave13](https://avatars.discourse-cdn.com/v4/letter/d/71e660/32.png) [@dave13](https://community.cartalk.com/u/dave13)\ **Post date:** [July 31, 2009, 1:45am UTC](https://community.cartalk.com/t/cylinder-2-and-4-not-firing/34266/5 "2009-07-31T01:45:10Z")
man its a ford focus doc 4 cylinder vtech its got over 100,000 and its a 2002!!please help me me bro!!thanks ---
**Author:** ![dave13](https://avatars.discourse-cdn.com/v4/letter/d/71e660/32.png) [@dave13](https://community.cartalk.com/u/dave13)\ **Post date:** [July 31, 2009, 1:48am UTC](https://community.cartalk.com/t/cylinder-2-and-4-not-firing/34266/6 "2009-07-31T01:48:04Z")
its a ford focus 2002 4 cylinder doc with a little over 100,000 miles.its been overheating alot but then sometimes it doesnt overheat and maintains power! ---
**Author:** ![budd2049](https://avatars.discourse-cdn.com/v4/letter/b/77aa72/32.png) [@budd2049](https://community.cartalk.com/u/budd2049)\ **Post date:** [July 31, 2009, 2:40am UTC](https://community.cartalk.com/t/cylinder-2-and-4-not-firing/34266/7 "2009-07-31T02:40:21Z")
How do you know it’s specifically cylinders 2 and 4 that are misfiring? Has the check engine light come on, and the codes were read? Those would help us a great deal, but one guess at this point is perhaps a faulty ignition coil, assuming that both cylinders are tied to the same coil. The overheating is very hard to diagnose without more information about when it happens. Does it happen when idling, in stop-and-go traffic, at highway speeds, all of the above? Do you hear the fan coming on? Does it only overheat when the A/C is running? When does it start to overheat, when does it cool back down? ---
**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\ **Post date:** [July 31, 2009, 8:20am UTC](https://community.cartalk.com/t/cylinder-2-and-4-not-firing/34266/8 "2009-07-31T08:20:13Z")
Use an ignition coil from the salvage yard, for the misfire. Make sure the radiator is full. Swap the fan relay (in the relay box under the hood) with one of the other relays. ---
**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\ **Post date:** [July 31, 2009, 10:45am UTC](https://community.cartalk.com/t/cylinder-2-and-4-not-firing/34266/9 "2009-07-31T10:45:37Z")
… and how do you know it is overheating?