Re: 2002 Intermittent No Start
I know zero about Hyundai's (including how to spell it right!) ,but I have seen a few chevy trucks have the same symptom,a crank but no start condition ,usually after sitting overnight,but a whiff of starting fluid fires them right up and they'll start all day after that usually--next morning the same scenario would repeat..
A friends truck did this and he spent days chasing wires to the fuel pump ,to ensure they were not chafed,corroded,or otherwise "bad",and they were fine--he had 12V getting to the fuel pump,but the advice of several good mechanics said to check the "5 second prime" circuit to the pump,and all involved there checked out good also..he had tried swapping another ignition module he got from a junkyard into it,and for several days he thought that cured it..but it started in again as the weather got colder..testing both modules (original and that used one) showed both as "good"..(The GM ignition modules control both spark AND the pulse for the fuel injectors,and one half can fail while the other remains normal,and do this only some of the time)..
Then one day he asked another good mechanic who worked at a GM dealership and he said "Buy a brand new AC-Delco module,and I bet your problem vanishes..he did,it was nearly 50 bucks,but it started every morning for a year after, that until he passed away from heart disease..
Perhaps your Hyaundi has a similar setup as the GM ??...I'd guess something isn't telling your fuel pump to turn on right away or the injectors..could be a faulty fuel pump relay,or a wire problem..I see lots of rodent damaged underhood wiring around here,and corrosion in weird places deep inside a wire harness,that usually is the source of "computer" problems..too many "mechanics" blame the computer and replace it,or the sensors,when its the WIRES that are defective..dont take much to lose .5 volts in a wire,and a computer senses that voltage loss ,gets a defective reading,and naturally tries compensating for it..
It's problems like these that make me long for the days of points and carbs,and mechanical fuel pumps that two bolts held to the engine,and you didn't need to drop the gas tank to replace one..cars are way too complicated now ,too high tech..too much sensitive electronics on them,IMO..