2002 Kia Sportage chugging

2002 KIA SPORTAGE
70,000 MILES • 4 CYL • 4WD • MANUAL
Avatar
SCARYMARY
  • MEMBER
  • 1 POST
hi
we have replaced the head on this car and the car will run but is now chugging the engine starts and runs but chugs
the car was put on a diagnostic machine and is reading misfire detected on 1 and 3
could you please help with some advice
Jul 31, 2009 at 5:04 AM
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Jul 31, 2009 at 9:15 AM
Avatar
GATEKEEPERATNIGHT
  • MEMBER
  • 4 POSTS
we had the same problem with the code saying misfire on 1 and 3 and it was bad fuel injectors they are electronical so they go out need to change them and u will be fine ours runs great after we replaced them
Aug 16, 2009 at 12:53 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