It woudn't start after replacing spark plugs and coils.

SOURCE: 2001 Hyundai Sonata

P0350 = IGNITION COIL MALFUNCTION..... Engine will not start or is hard to start. (Cranks OK)... Probable cause>remedy 1.Ignition lock switch faulty> Replace ignition lock switch 2.Ignition coil faulty> Inspect ignition coil 3.Power transistor faulty> Inspect power transistor 4.Spark plugs faulty> Replace plugs 5.Ignition wiring disconnected or broken> Inspect wiring 6.Spark plugs faulty> Replace plugs

SOURCE: 2001 hyundai santa fe 6

HI......
OK. just follow the number on the ignition coils.
And the number on the cylinders are.
The FIREWALL side are 1,3,5, Starting from the belts location.
The RADIATOR side are 2,4,6, Starting from the belts location.
The coil with number 1 go to cylinder 1. as the same way the rest of the coils and cylinders.

OK... I hope this solve your question .

THank you for use fixya.

SOURCE: (2000 Hyundai Atos 999cc) can you please solve my car problem.

hi this may sound odd to you but worth looking into ?? from what you have described may i suggest that your problem may be the fuel tank is becoming vacuumed due to possible tank breather being either blocked or kinked ? this will allow car to start ok and run for some distance whilst the engine is using fuel drawn from the tank via fuel pump ok? then as fuel is used it is not being replaced by atmosphere air in tank ? resulting in vacuum so engine is starved of fuel as pump cannot overcome vac and fuel delivery to engine slows ? but when you stop the vac will slowly clear and all is ok till next time ? try this temporary leave tank filler cap loose an road test if no prob's then check the breather pipe normally clipped alongside filler pipe? under wheel arch ? where all rain/mud etc will come into contact? hope this helps ?

SOURCE: 30 amp ignition fuse in engine compartment blows at start

It sounds like a bad ignition switch or something is grounding out.Try to isolate the problem to key positions.See if the fuse blows when you turn the key to ACC(when your dash lights come on without starting)If the fuse does not blow then when you go to start it and it blows it could be one of many problems,the more common ones could be ignition switch,wiring,starter relay,starter soleniod,or perhaps the starter itself is shorting out,this can sometimes happen when a starter goes bad.

SOURCE: 2001 Hyundai Santa Fe Ignition coils & EGR Valve

Well I went ahead and took a go at changing the coils, plugs and wires yesterday. It literally took maybe 15 minutes and my hands didn't even get dirty. This is something that the auto place wanted to charge me 650 to do. I spent 200 on parts. I didn't realize the coils were the things sitting on top of the spark plugs. I think my 4 year old could've done it. All I had to do was unbolt the coils detach the wires and then replace. It was too simple.