If you have “random misfire detected” start looking at this issue.ĭiagnosis: A decent leak down test will reveal burnt valves. Rather this fault cases generic fault codes to log.
i.e.: it wont say “Cylinder misfire detected cylinder 3”. We advise getting both heads removed and getting all valves and valve seats if you have this issue.įault Codes: The codes applicable to this application won’t always give you misfire codes for specific cylinders. This means that engines repaired under warranty are now possibly running different hardware in both banks depending on what repairs you had done. Repair: Jeep have been upgrading the valves and the valve seats in the vehicles that have come through for the repair and as stated only in the left hand bank. It visually looks like they have mirrored the manifold leaving us to suspect that in coming years we will see problems with the right hand bank but time will tell. Jeep have rectified this in recent models by changing the design of the inlet manifold. It is believed this is the cause of the issue and also explains why only one bank is effected. Referencing the image you can see how one bank gets a more direct route of air than the other. The result is the left bank runs leaner and hammers the valves in that bank. The runners for the manifold cause a leaner intake mixture to come to the left hand bank than the right. The cause of this amazing issue is actually the inlet manifold design. There is nothing to suggest there is an issue with the right hand head but simply we argue, that whilst there for an extra few hundred bucks, get the whole job done properly. Whilst they have no contractural obligation to do anything with the right hand cylinder head we advise that whilst there getting both head serviced. Manufacturers are covering this under warranty however they are only repairing the effected head and not removing both heads. To repair this, the cylinder head has to be removed which is a major expense. The valves burn out and cause the combustion chamber to no longer hold compression resulting in a misfire. The fault in question is the valves in the passenger side or left hand side cylinder head of the V. We will get to the specific fault codes in a bit. The 3.6 Jeep is known for developing a misfire and in some cases logging the fault codes relating to this. Albeit complete with gutter rash and corner bumpers marked with the classy yellow paint of shopping centre carpark pylons. The newest contender for poll position in the race to be the most popular car in the carpark of SCEGGS Darlinghurst is no longer the black Land Rover but has been overtaken by the white Jeep. People owning Macs, sitting in coffee shops dreaming of making it to the top in life, proceeding to tell their friends that they plan to do this in eight months and owning a white Jeep with black twenty inch wheels seem to be the norm these days. In Australia, a recent push in marketing has seen the brand become an icon. Well to be fair, it’s not the only “common fault”, the 3.6 engine featured in a variety of vehicles produced by Jeep and released across the globe is not much chop. That’s right, you read the title correctly, the “common fault” for a 3.6 V6 Jeep is a cylinder head issue.
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