Sonata NF (2006-10) :: V6 Cranks But Takes A Few Attempts To Start
Nov 16, 2015
I have a 2006 V6 Sonata that takes its time to get started. It will crank great, but after a few seconds of trying and no starting, I turn the key to the off position and try it again. Most of the time the car will start on the second attempt, but sometimes it requires a third attempt. Here are the facts as I have observed them:
-I cannot hear the fuel pump engage until a split second before the car actually starts.
-There are no RPMs until the fuel pump engages and the car starts.
-The engine runs really rough for a second while the car initially starts and runs.
-When the car is running, it's really smooth. Like, brand new car smooth.
-This issue happens no matter the time of the day or the temperature of the engine.
-The fuse for the fuel pump is fine.
-The fuel pump relay is fine. I know this because I swapped the horn relay with the fuel pump relay and nothing changed with the starting issue and the horn still worked great.
-A friend used a jumper in the fuel pump relay to see if the fuel pump would engage and it did.
-Have not used a fuel pressure gauge as we did not have one on hand.
Is there anything else to check besides using the fuel pressure gauge? Have you run into this same issue? If so, what was the cure? I'm averaging about 20 MPG with mostly city driving. Is that normal for the 2006 V6?
Recent work included new spark plugs, a new gasket somewhere because it was weeping oil there (I think it was the part of the engine that you have to remove in order to get to a couple of the plugs), and the idler pulley thingy and it's belt.
The starting issue started before I got this work done. I took it to a repair shop because of the starting issue and they found these other problems. The funny thing is, they claim that the car started perfectly fine for them every time, which is pretty hard to believe. When I picked the car up from the shop, I tried starting it, it didn't start, but the mechanic was right there to see my issue first hand.
My thinking is that the fuel pump is fine because when it does finally start, the engine runs smooth as silk. I love how when I'm going 80 MPH, just a slight amount of pressure on the gas pedal and I'm up to a hundred in no time flat. I love this Hyundai V6. Now if I can just get it starting normally.
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