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Injectors don't always open, so car wont always start.

Can't find a kia schematic, sonata seems different due to having different features. I want to know what tells the injectors to open when the car is first started, a relay or something like that.

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2 Answers

The cars pcm,or ecu (computer) controls the injector
pulse width,the timing & how long they are open

That type problem is way beyond your ability, even
with a wiring diagram

You need to check for spark & injector pulse when cranking,
to confirm that the crank sensor is working, as well as fuel pressure

Beyond that, you need a repair shop with an oscilloscope
to test things

Posted on Mar 01, 2013

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  • Cars & Trucks Master
  • 2,555 Answers

Check for its specification (Ohm) If not within, replace it.


mai Lor

Posted on Mar 01, 2013

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 393 Answers

SOURCE: 1999 F 250 crank but wont start

look on injector pump make sure there are no loose wires

Posted on Dec 09, 2008

  • 10 Answers

SOURCE: Help w 1994 chevrolet truck

disconnect the batt. is your fuel pump running check fuse listen for it

Posted on May 28, 2009

  • 1071 Answers

SOURCE: 1997 Kia Sportage wont start

check to see if timing belt has jumped

Posted on Aug 19, 2009

roniecon
  • 6927 Answers

SOURCE: i have a 2001 camaro with a 3800 v6 it cranks but

The crank sensor is what pulses the ijectors,and makes the spark,so I would start at the crank sensor.Let me know how you come out.Check for any blown fuses also.Ecm fuse would cause this,but it may be called anything ,so check all fuses.

Posted on Sep 10, 2009

  • 32 Answers

SOURCE: 87 F150 wont start. New fuel pump, rail,

try changing the igniton module on the distribuitor in most cases it's the problem if you dont want to buy it you can take the ignition module to a autozone and they will check it for free

Posted on Sep 19, 2009

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1 Answer

My 2010 kia picanto wont open injectors new crank sensor and fuel pump but the wont start nor open the injectors


Search GOOGLE for:
"2010 kia picanto" injector troubleshooting
2010 kia picanto injector troubleshooting Google Search
See about 19,700 results!
SAME SEARCH as above,,, THEN click on "VIDEOS"!

THIS MAY help too!
2010 kia picanto injector troubleshooting YouTube

Anthony

Apr 17, 2018 | Kia Cars & Trucks

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I have a 2002 Grand Prix I replace the fuel pump sometime it start sometimes it don't do you think it the engine computer cause it want let the fuel Injectors open


Do you know for a fact the injectors have power but are not getting a ground signal from the computer ?
Is it possible the fuel pump is not always getting power ?
If the injectors are not opening, it could be the computer, or the ignition module, or other components.

May 14, 2013 | Cars & Trucks

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I have a 2000 kia sportage 2.0 liter engine. it will not start right away like it should, it takes a few times to get it to actually start and run, then when u turn it off it wont start up again. A me


replace fuel filter replace air filter,clean fuel injectors because they could be dirty clogged with carbon causing injectors to stick open and keep spraying fuel when engine off flooding engine.code scan for faulty engine coolant temperature sensor or CMP sensor.

Oct 01, 2012 | 2000 Kia Sportage

3 Answers

When putting gas in my 2004 Kia amanit the fuel nozzle kicks off. How do I locate and fix the problem


HI Bridgette,

Due to the different shapes of fuel tank filler necks in cars & trucks, it may be necessary to vary one or more things to allow fuel to flow uninterrupted until the tank is really full.

The main problem can come from the new "vapor recovery" gasoline pumps. These pumps and hoses actually recover gasoline fumes from your tank as the liquid gasoline displaces the air / fumes in the tank is it is being filled. If gasoline flow is started at full blast, it can splash back slightly, causing liquid to be pulled back by the pump - so it shuts off. So, start with a slow rate of filling and gradually increase flow rate to maximum over 5 to 10 seconds. If it still shuts off, try some of the suggestions below.

First, don't fill at maximum flow rate from the pump - that is, don't set the nozzle for wide open. Select one of the other "latches" on the handle instead of the fastest flow and let the tank fill entirely at this rate.

Second, you should experiment a bit with the length of nozzle that you push into the tank's filler neck. If you push it in too far or too little, the pump nozzle can do what you're describing.

Third, try twisting the nozzle slightly so that it doesn't hang straight downward - a little to the left or right may provide a solution.

Lastly, try a different gas station. Their pumps may not be so picky with your tank's filler neck.

Good luck!

Jun 14, 2012 | 2004 Kia Amanti

1 Answer

My Kia Sorento automatic 2007 44k lost power and now wont go over 2000-2500 revs I don't seem now to have kick down


no check engine on possible fuel pump problem or converter plugged check airfilter and exhaust if the gas is escaping

Mar 25, 2012 | 2007 Kia Sorento LX 4x4

2 Answers

What are diods #'s 1 & 2 on a 2004 Kia Optima fuse panel, #'s16 & 17?


always check the simplest things first. is it getting spark? if so, is it getting gas? if so, is it getting enough gas? and so on...

Jan 21, 2012 | 2004 Kia Optima

1 Answer

When i try to start me 2008 sonata the alarm goes off and the engine will not turn over. what can i do?


Your Sonata is equipped with a "Keyless Entry & Burglar Alarm" system. When the Burglar Alarm is activated, it KILLS the starting system through the used of a relay called the "Burglar Alarm Relay". This mode prevents engine starting with the key.
Solution #1
Disarm the system with the Keyless Remote (key fob) If you don't have this remote (or its battery is dead) replace the battery & try disarming again.
Solution #2
Enter the vehicle & insert the key in the ignition and turn the ignition switch to 'RUN'. Wait 3 to 5 minutes until the alarm stops. You should then be able to start the engine.

Have a qualified/certified Hyundai Service Technician properly diagnose this issue.

Sep 07, 2011 | Hyundai Motor 2004 Sonata

1 Answer

Car is burning lots of fuel, doesn't always start on first crank, and doesn't seem to have as much get up and go..especially around 40 mph


oil change is ok air filter clean plugs ok no check engine on using ac more often or injectors are dirty put a injector cleaner in the tank at next fill up

Aug 13, 2011 | 2007 Kia Sorento LX 4x4

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I have a 2004 Kia Optima and it left me stranded on the road, came to a complete stop, I turned off the ignition then turn the key again and it started up fine. It had happen a couple of weeks ago and...


You need to have the codes checked. when you cycled the key , you were resetting the ECM. This didn't fix the problem. Get the codes and let me know. We can go from there. There are to many things to list that can shut down engines. And you don't need to buy expensive parts that you don't need.
Randy

May 15, 2011 | 2004 Kia Optima

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