Question about 2002 Jeep Liberty
Backfired through motor before replacing cat's.
Posted by Anonymous on
Backfiring is an indication of incorrect spark firing order or timing check that the HT leads are not touching each other and that the firing order is correct
Posted on Jul 19, 2014
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Posted on Jan 02, 2017
SOURCE: 2002 Jeep Liberty Sport 3.7L
We have an 02 Liberty 3.7L, here at my repair shop, after customer replaced, spark plug's and all coil pack's, brought it here to my shop, was running with two cylinder's miss, did cylinder compression test, no compression on two cylinder's, remove valve cover's, found two rocker arm's off, remove cylinder head's, and found that on those two cylinder's the valve seat's had drop, keeping the valve open, and that's why the two rocker arm's had come off, do a cylinder compression test, could be the same thing, hope this was very helpful.
Posted on Aug 30, 2010
Not likly but possible. Cat Converters usually only play up after some contamination causes blockage and usually only affects high rev range
Posted on Nov 28, 2012
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