Hello All,

I've got a problem on a 99 Sonata V6 I was hoping someone could help me
with. The Vehicle currently has 58k miles on it and from what the dealer
showed me when we bought it in March this year the plugs and wires had
been replaced (I suppose I could pull the front 3 to be sure). Anyway...
on to the problem. It just started doing this, but it takes a long time
to start the car now, I have to crank it much longer than usual. Once it
starts, it doesn't sputter, and it runs fine, and has no hesitation, or
any other problems....

Any ideas?

Thanks

 

Does it crank normally, faster than normal, or slower than normal?

Do you have a check engine lamp on?

 

It cranks normally, and no check engine lamp is on... Everything else runs
fine once it starts.

 

Possibly a crank sensor. Possibly fuel pressure leaking down when off due
to a bad regulator. I'd recommend having it checked.

 

You are probably right about the regulator... My wife has been driving it
more than me lately, so I haven't really had the chance to really
experience the problem like she has. If I shut it off, and restart within
several minutes, it starts up just fine... If I let it sit, say, several
hours to over night, I have the problem.

Is the regulator part of the fuel pump, and is it easy to replace? (my
inlaws have this problem on their Jeep Cherokee that they just live
with... they end up cycling the key 3 or 4 times to presurize the fuel
line prior to starting due to a bad check valve that is part of the fuel
pump)...

Thanks

 

If I recall correctly, this system has a fuel return, so you'd find the
regulator on the fuel rail.