Engine misfire?

Is there somewhere I can look to get a exact location web, car, manual

I can't figure out a jerk in my car, from time to time every day the car jerks when accelerating from 15 mph-20 mph during the jerk all dashboard lights come on the engine almost halts as if the crankshaft is stuck. I press clutch and car picks up normally after crossing 20 mph

I just yesterday changed the battery, and see some normal driving conditions, I was considering the cables and getting the tune up, but for now I'll have the spark plugs changed and get back to.

Thank you for the reply

Today I checked the plugs on my 04 santa fe to investigate a misfire, and the #1 & #3 plug heads were Covered in oil. And it was clean oil which I found strange.

The plugs were Very old and I had a misfire. When I pulled out the number 1 plug the head was completly engulfed in oil, the same if a little lighter on the number 3 plug, I found it strange that the oil on them was clean though, not like the oil on the dipstick. I put new plugs in and pulled the number 1 & 3 again immediatly, they still had oil on them but not nearly as heavy as when I pulled them the first time. I said screw it put em in and see how it runs. Not surprisingly, it still misfires, I assume from a drowning spark plug.

So I guess the real question is this. Where is the oil coming from? I immediatly thought head gasket, but my dipstick doesnt look abnormal at all, rings I thought next, then decided to come here first.
Also I had the timing belt done on it about 9 months ago (by a mechanic) and I was wondering if something could have gone wrong there as well, because the car started misfireing within months of getting this service done

My girlfriend's car is throwing a code saying that cylinders number three and five are misfiring. She had the spark plugs and coil packs changed a few months ago and I did the wires yesterday hoping it would make the code go away. Wires replaced code clear, drove for thirty seconds and engine light back on same code misfiring on number three and five. Any thoughts on what the problem could be?

My car was running great and had to go out of town for awhile and my son did not start it for three months. Now it misfires when I tried to use it. However, after it ran for a few minutes it ran fine. The last time I drove it I could not get over thirty mph and it was misfiring again. I was told the compression in one cylinder is supposed to be 160 but only has 90. Is it possible for the gas to have gone bad and maybe the tank needs to be changed or something worse?

Not sure yet my son is going to get it Sunday and try to work on it. I will tell him to try that but it is not even starting now all it is doing now is spinning like it wants to start.

Yes, the fuel pump is making a noise when I turn the key on.

He is on his way now. I went ahead and got the crank position sensor to let him try before we try to push it onto the trailer.

Well that worked it started and it sounded like my old car, lol. But he found some loose wires on the coil pak and a few others so he took it home with him to check it out. Thank you so much for all your help. I thought it was a lot worse. Thank you again and god bless you.