2001 Jeep Grand Cherokee "bad fuel injector cause misfire" Questions

bad air fuel ratio to that cylinder 3, air leaks? the ECU discovers this with the spark monitor this monitor (runs all the time) it sees, the crank shaft not accelerate fast enough, (weak power stroke

fuel pressure at idle and wide open throttle for 1 second? if it fails gunned?, FPR is bad. as all are about this old.
does engine have full power up a tall hill.???
does it or does it bog.?????

fuel right with no or weak spark, so..... this is called misfire, (hot and cold, no hot actual temp stated) our USA cars have OBD2, PCM. so why not connect a scan tool to the OBD2 16pin port, and scan

...bad fuel.. old or someone put wrong or bad fuel there.
lots.
P= fuel pump below
F= fuel filer is here 2002.(again,USA MARKET)
WHY ASK YANKS THIS?


why not get the car ...

injector $1 weak or faulting, sticking or ? bad. bad fueling #1 means too rich or 2 lean there are tests (ASE books to read) for each class failure. why not get it fixed. or buy the tools and DIY. its

...cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel

...fuel. they can leak air at the base. i check plenum vacuum too for 19" Hg vacuum steady never bouncing. if it bounces head valves, bad, or ? ok. in addition to Cadavers suggestions i would go further ...

...fuel filter,nozzles and clean the injector mouth where is it? is that the question, the DLC? connector>? the 1994 needs a non OBD2 scan tool. the innova 3140 dose this car, 93-95, OBD1 jeeps. ...

...bad fuel injector clogged fuel filter or injectors, worn ignition parts, etc. I suggest you apply the service brake in gear and give it a lot of throttle (power-brake)to determine if the engine ...

...fuel pressure, (FPR bad or vacuum to it dead)
3: leaking fuel injectors. (many actual causes) ask,
4: and 47 more.... causes, gue$$ing is futile, we TEST and find them. do you want to learn to ...