1997 Hyundai Accent hard to start when cold & lack of power

Tiny
MICHAEL6390
  • MEMBER
  • 1997 HYUNDAI ACCENT
  • 120,000 MILES
I have a hyundai accent 97 sohc 1.5 in good conditions. 120 000 km but I have problems to start when the engine is cold, but warm weather outside. Starter runs well but for a long time and hesitations when the engine starts. Battery, genuine sparks plugs & wires and coils are ok. I checked intake air temperature and seems to be ok and engine coolant temperature but not sure if ok. The resistance vary between 1600 to 3200 (IAT + ECT when cold) and 200 to 300 ECT when engine hot at 68F. I also checked my mass air flow sensor and it said.260 volt at idle and.235 at 3000 rpm. The specs mentionned.7 to 1.1 volt idle and 1.3 to 2.0 at 3000 rpm. Maybe I did something wrong? Positive lead on terminal 1 and negative to ground. Someone to help please, thanks

ignition coil primary windings 1.1 ohm (terminal 3-2 and 3-1) not in the range at 68F?
secondary windings 1-4 is 11.84 Kohms and 3-2 is 12.36 Kohms
Thursday, May 23rd, 2013 AT 3:49 PM

5 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Did you check for trouble codes?
Was the fuel pressure tested?
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Thursday, May 23rd, 2013 AT 5:51 PM
Tiny
MICHAEL6390
  • MEMBER
  • 5 POSTS
No trouble codes. I guess I should make a fuel pression and compression test. Thought it could be a sensor to replace or mass air flow to clean

thanks
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Thursday, May 23rd, 2013 AT 6:49 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Difficult starting after a long period of inactivity are mostly due to low fuel pressure. Try cycling the ignition a few times before starting to test if it starts easier.
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Friday, May 24th, 2013 AT 7:50 AM
Tiny
MICHAEL6390
  • MEMBER
  • 5 POSTS
Forgot to say that 2 weeks ago I added a product to clean fuel system. 2 days after the car was like a new one, but after 2 weeks there is a lack of power when I start from a stop and the engine still popping when starting like before I added that product. The product gave to the car more power only to acceleration, but not now
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Friday, May 24th, 2013 AT 9:16 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Guess the honeymoon is over. Lol.

Have the fuel pressure tested before we continue. It is best to get one thing over at a time.
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Friday, May 24th, 2013 AT 11:28 AM

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