2002 Ford Focus Misfire

2002 FORD FOCUS
115,000 MILES • 4 CYL • FWD • AUTOMATIC
Avatar
WOLFSHADE27
  • MEMBER
  • 2 POSTS
I have a 2002 Ford Focus with the 2.0 splitport motor in it and it is misfiring when idling but has no loss of power. During trouble shooting Ive replaced the coil pack and plugs to no avail. I had it on a computer and it showed a misfire in 2 of the cylinders also..... Any suggestions will be greatly appreciated.
Apr 1, 2010 at 1:14 PM
Advertisement
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Engine running rough or misfiring can be cause by the following-inspect and test all the following below:
1.Defective spark plug.
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor
11.Idle air control valve.
Apr 1, 2010 at 11:20 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle