1989 Hyundai Excel high hc

1989 HYUNDAI EXCEL
90,000 MILES • 4 CYL • FWD • MANUAL
Avatar
SEIA
  • MEMBER
  • 1 POST
my car failed inspection for high hc. i hear a very suttle popping sound. the timing is way off and turning the distributor in either direction does'nt bring to specs. it seems that n0.1 cylinder is firing at the wrong time.What should i look at?.distributor cap,rotor,spark plugs and wires have been changed. thank you.
Apr 14, 2010 at 9:36 AM
Advertisement
Avatar
RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Other causes for high HC are as follow vacuum leaks, weak coil, low fuel pressure, dirty fuel injector/s and worned valve guides/seals and cylinder rings-
Apr 14, 2010 at 4:14 PM
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 Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.