Misfire at low speed light acceleration 22r engine proffessionly rebuilt

Check Engine Light/Misfire Due to Intake Valve Locks ...

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Jeep Liberty Check Engine Light/Misfire Due to Intake Valve Locks/Valves. ...Misfire cyc 4 and random cyc misfires, changed coil packs and plugs... sounds as if rod ... Light came on again (misfire on cylinder 4) - switched coil from 4 to 2. Light ...

Jeep Liberty Questions - Cylinder Misfire code - CarGurus

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CarGurusMay 27, 2009 - #4 misfire new plugs and coil pack on #4 light came back on after 300 miles if ... How come it stopped misfiring for 2-3 months, and now is back? ... I have a 2005 Jeep Liberty 6 cylinder, engine light came on scaned the codes ...

Liberty Cylinder Misfire / Computer issue? - JeepForum.com

Get a code reader and plug it in. The check engine light might not be working.
autozone etc. can check the codes for free.

Could be a transmission problem or something as simple as bad spark plugs.
The engine is under the most load when RPM is low and you are trying to accelerate, such as when it upshifts.
You should have the computer checked for trouble codes and hopefully that will point you in the right direction to test.
If the spark plugs have more than 50,000 miles of wear you might start with replacing them.

Ignition Wires on wrong

Worn out Cats --can't test?
140,000 miles & 11 years--replace them

Check Fuel pressure

Front O2 Sensors--not the issue, but get
changed at 100,000 miles

either you have a faulty gas pump, one or more spark plugs or cables ar going bad or nrrd to br replace, could be a vacuum leak too, yourcar have the check engine light on? if so, need to know what code the will help you a lot.

I would check spark plugs and wires. I have had similar problems from a mis-gapped or lose spark plug or wire. most misses are more noticeable at low speeds

I would start with plug wires rubbing on something and created a short.and is not compleatly worn through. a cheep place to start. good luck with it.

Maybe its time for new spark plug,,, this is an inexpensive refresh and something the mechanic will do if he starts troubleshooting the engine miss. While you are installing the new spark plugs, give your spark plug wires a CLOSE VISUAL inspection for burns, cracks, or other defects that would cause a misfire..Once you have replaced the spark plugs..checked the wires, ..and if the miss is still there, its time for a qualified professional to look at it.. they will hook it to a diagnostic machine and tell you what happening... good luck..... and no, it hasn't "slipped timing"..

When did the spark plugs last get changed? May need new spark plug wires.

I had to rebuild my engine at 97000 miles cuz of low engine oil pressure and bad berrings