1992 Hyundai Lantra

1992 HYUNDAI LANTRA
Avatar
TONKS
  • MEMBER
  • 1 POST
1992 Hyundai Lantra 4 cyl 230000 miles

I have air in the return line. The car runs hesitantly in 4th gear. Mechanic has done several checks and replaced fuel pump and checked lines. Replaced injectors.Still not fixed.
Jul 18, 2010 at 7:58 PM
Advertisement
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Lack of acceleration,surging,chugging,hesitating,bogging etc. could be caused by one of the following below.

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking,fuel filter or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.
Jul 18, 2010 at 8:08 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