2002 Hyundai Sonata, 140K, 4cyl, DOHC, started having no pickup when easing on the gas. If I punched the gas petal, rpms went up and car moved. Same on Highway. Could get up to high speed by punching down on petal, but seemd like no gas when easing normally on petal. Replaced the air filter, no help; Put in some injector cleaner and got on the highway to rev motor hoping to clean out system. Same problem. Got off highway and car died, Will not start now. Turns over but will not start. Could this be fuel filter?. pump?

SOURCE: 2001 hyundai sonata 2.4 dohc, cylinder 3 misfire code

tried testing the igniter also i would look into the injector, that will cause a single cylinder misfire and probably is your problem?misfires are not noticeable at higher speeds, which im sure you know but i would go that route, could have a pinched injector or a stuck one. one easy way to test is swap 3rd injector with another and see if that one starts misfiring instead, another rought is to get a cheap auto stethoscope and put it to each injector to hear if its opening and closing, compare with others. good luck.

SOURCE: Hyundai Sonata 2003 Car starts then dies immediately :(

dear friend-it appeares that you have no feul pressure,check pressure,feul filter,feul system,

SOURCE: hi i need to knoe were the oil drain plug is on a

LOOK ON BOTTOM SIDE OIL PAN.YOU WILL SEE A SMALL METRIC BOLT WITH O RING.YOUR SONATA HOLDS 4.2 QUARTS.

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