2003 Jeep Liberty Q&A
2003 Jeep Liberty Question: my 2003 jeep liberty sport has a misfire running very rough why?
check engine light was flashing replaced all coils checked all injectors (all firing) replaced computer (brain) check engine light went off. still misfiring compretion test numbers were between 125 and 140 except one cyl was at 25 pulled passenger side valve cover. valve rocker had fallen out now the hydrylic lifter wont seem to hold rocker in place got it to stay in place for a short period of time (very short period of time) but ran well for that short amout of time before it fell back out why wont the rocker stay in place? lifter was pumping oil out so figured it would have enough oil pressure to hold it in place please help. thanks - sunny fl problem
Check valve stem height, very possible 'that' valve seat in the head has dropped down out of the head. It will intermittently pop back in place and with the rocker installed it WILL run ok for just a few cycles until it drops down again holding the valve down then the rocker jumps off again. ("IF the valve and seat were ok, so should be compression"!!!) Head will have to be removed to fix!! Has the engine ever overheated? Need to know that as well. - pushrod