Question about Hyundai Motor 1998 Sonata

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Engine not starting after engine overhaul no spark and fuel injectors not putting petrol

I did the engine overhaul on the hyundai sonata and the vehicle cant start after the reassembling. There is no spark on the spark plugs and the fuel injectors are not spraying petrol even though petrol is coming through the pipe. What could be the problem?

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  • Hyundai Master
  • 22,156 Answers

Sounds like a immobilisor fault ,was battery left connected with the key in the ignition and the drivers door open??

Posted on Dec 10, 2012

  • Earnest Masiya
    Earnest Masiya Dec 10, 2012

    the car doesn't have an immobilizer but have the alarm system. the battery was connected and it ran down because the driver door was not properly closed and the light was on causing the battery to run down.

  • Colin Stickland
    Colin Stickland Dec 10, 2012

    iam refering to factory fitted immobilisor ,this vehicle has one thats for sure ,now if you have the main key with the buttons then sit in the car and lock and unlock the three times slowly and on the third attempt put the key in the steering lock and try to start within 5/10 seconds and see if it releases the immobilisor

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6 Suggested Answers

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Posted on Jan 02, 2017

  • 19 Answers

SOURCE: 2003 Hyundai elantra

Hi there they are known to have dramas with the pick up for the immobilizer i would be getting that checked first before spending money on something .else

Posted on Sep 03, 2008

  • 54 Answers

SOURCE: change spark plugs 2001 4 cyl hyundai sonata

You change One spark plug, and One wire at a time. Do you know where your timing belt is? If not, its on either the right or left side of the engine. There is a covor to the timing belt. You take the First plug that is closest to that belt. Then you work your way to the next closest all the way to the last one. Remember, you have to do ONE at a time.

Posted on Nov 30, 2008

SOURCE: Hyundai Sonata 2003 Car starts then dies immediately :(

dear friend-it appeares that you have no feul pressure,check pressure,feul filter,feul system,

Posted on Jul 21, 2009

ghost45
  • 1280 Answers

SOURCE: Locating and changing spark plugs on 2007 Hyundai Sonata 4 cylinder

They are directly below the coil packs (10mm bolts).


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Posted on Oct 25, 2009

  • 68 Answers

SOURCE: PDF 2001 Hyundai Sonata spark plug change instructions

I posted this solution for this same engine on the 2001 Kia Optima. It is Exactly the same 2.5 V6, and the instructions are exactly the same. I recommend replacing the plug wires. Please see 2001 kia Optima for the rest. Good luck, it's fairly easy.

Posted on Jan 30, 2010

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Sonata spark plugs


here you go

Hyundai Sonata Spark Plug - AutoZone

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Rating: 5 - ‎25 reviews Spark Plugs produce the spark for fuel combustion in your vehicle's engine.

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Apr 14, 2017 | Cars & Trucks

1 Answer

Where is the fuel injector switch located


There no switch.
The pink wire at fuel injector is voltage. The other wire is ground, controlled by computer. There is a fuel injector fuse, not only check the fuse, check the fuse circuit for voltage. Use a test lite to check for voltage.
Engine cranking, do you have spark at the spark plugs? Use a gage and check proper fuel pressure.
Any applicable trouble codes?

Apr 16, 2016 | 2005 Hyundai Sonata 2.4

2 Answers

Engine cranks but won't start


there is spark at the plug and fuel at the injector header seems like the injectors are not firing.What controls the injectors a relay? is there any kind of inter lock that goes to the alarm?

Oct 11, 2013 | 2005 Hyundai Sonata

1 Answer

WHERE IS THE FUEL CUTOFF SWITCH ON THE 2007 HYUNDAI SONATA


No cutoff switch on Hyundai cars. Only Ford products.
The fuel pump and injectors get power from the engine control relay.

Feb 19, 2013 | 2007 Hyundai Sonata Limited Sedan

1 Answer

Hyundai sonata 2005 model is not starting properly. Recently changed fuel pump & filter, spark plugs,and air filter. One week back I cleaned fuel injector . After that I got this problem. If I am...


why was injector cleaned?was there problem already that caused you to clean them?just one or the all of them?and was it done on the car or were they removed to clean?How were they cleaned.you may have an injector leaking and when left it floods a cylinder making it hard to start.check everything that was removed,look for any leaks or listen when idling for air leaks.You have not mentioned how it runs,whether it is rough or down on power,this will help us to track fault better.May be check that all the injector plugs are on the right ones.hope this helps.

Mar 22, 2011 | 2005 Hyundai Sonata

1 Answer

2003 Hyundai Sonata with 4 cyl. PO301 error code. Have replaced spark plugs, wires, coil packs, and mass air flow sensor. Replaced air filter due to heavy gas smell. Car was starting after tapping gas 3...


P0301 - Cylinder 1 Misfire Detected.

Possible Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak at cylinder

Possible Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

Being you have a heavy gas smell I would look into the injectors. If injector #1 is over producing it can cause a misfire. Test your compression and fuel pressure.

Jan 17, 2011 | Hyundai Sonata Cars & Trucks

1 Answer

PO301 code on Hyundai Sonata. Replaced wires, plugs, coil packs, and mass air flow sensor.


P0301 - Cylinder 1 Misfire Detected.


Possible Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak at cylinder


Possible Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

Jan 17, 2011 | Hyundai Motor 2003 Sonata

1 Answer

02 sonata wont start. the fuel lineoff @ the


theres a fuel pump relay in the power distribution box under the hook you manuel should tell u wich one

Feb 12, 2010 | 2001 Hyundai Sonata

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