This last statement is true for virtually all fuel injected cars. You should NOT depress the accelerator during starting. About the only exception is very cold weather when some manufacturer's recommend depressing the pedal slightly.
It is pretty hard to diagnose the above without seeing the car. When you say your dealer is befuddled, is this a Hyundai dealership? How many times have you had the car in for them to look at it. Why was the fuel pump replaced? Was there something to indicate it being a problem?
When were the spark plugs and plug wires last replaced?
Good folks, I cannot intelligently answer the questions: Plus, tt's my wife's car and she actually told the service advisor-writer not to discuss it with me, as we kid each other about such.
Anyhow, I see this q & a on the internet, and thus perceive that it's happened with at least one other (apparently) '05 Sonata:
#475 of 1474 Re: Sonata V6 Starting problem [satishkumar] by lastwraith Jun 23, 2005 (10:28 pm) Reply | E-mail Msg Replying to: satishkumar (Jun 16, 2005 2:56 pm)
Does it turn over slowly or just crank away and not "catch"? We will need more details to try and narrow things down for you.
There are a few "no-start" checklists to run down online, I just don't have my links handy. Basically you need spark, fuel, and compression though. If you are missing one (or barely providing it) things will get tricky. If you are totally clueless you can do simple things like check your battery's charge, take a look at how long your plugs have been in and what shape they are in, listen for your fuel pump, listen to the sound of your starter motor and check it if need be. There are just too many possibilities.
My ex had a cold start problem on Toyota. Turns out she was stepping on the gas pedle when trying to start it, keeping her foot OFF the gas pedle fixed the problem
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