Misfiring XF - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

XF_boy · 07-21-2002, 19:09

Howdy all,

My XF is running like a dog. Every once in a while, (ie twice or three times a day.), the engine will misfire. Before you guys tell me to change the ignition leads, plugs etc, I changed them on the weekend: the leads are Bosch Sports, the plugs are Champion Gold, new from Burson Auto Parts. And it still misfires. Just last night I was playing with the ignition timing. It was originally at 12 deg BTDC. I advanced it to 14 and drove it around, still did it, retarded it to 10, which is the factory setting and it still did it, took it to 8 and IT STILL DID IT!!!!!!!!!!!!!!!.

HELP ME PLEASE. I AM AT WITS END!!!

Birdie · 07-21-2002, 19:20

probably the ignition coil, I had the same problem, when i pulled my coil out on my XD the coil was cracked i thought it was the leads to but i also has new plugs/leads dizzy cap and button

XF_boy · 07-21-2002, 20:05

Rotor botton and dizzy cap are both fine. Could I possibly use the Bosch electronic coil as I can get them cheap(ish)?

BRING_BACK_XF · 07-21-2002, 20:14

I think my XF has the same problem. Changed my plugs and leads about a month ago and since then started to notice a rough idle, usually more when cold. The engine sort of shakes with a short sharp blip a few times a second, sometimes a few quick ones in a row and then maybe one second of nothing. Sounds like something wrong, but once you start driving there appears to be no problem. These blips are really sharp, like someone's hitting the engine with a big rubber mallet. Maybe I should look at my coil as well.

Pearly · 07-21-2002, 20:24

mines doing that same thing B_B_X, but I just changed my coil and all leads...

XF_boy · 07-21-2002, 20:47

PearlyXF, if you changed your coil (BTW what type of coil do you use?) and leads, then what could be causing the problem?

XF_boy · 07-21-2002, 21:43

Could it be that my engine has a fuel delivery problem?

Pearly · 07-21-2002, 22:37

I think my coil is a Bosch, I had it changed by my mechanic about a month or so ago, I didn't do it myself. I'll have a look and I'll let you know. Don't know what could be causing that other thing though.

ebxr8240 · 07-21-2002, 23:15

Head gasget can cause this too..Along with alot of things??

07-22-2002, 01:27

Stupid question but is the car on gas.