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Old 02-27-2013, 04:19 PM
HorsePullinDodge HorsePullinDodge is offline
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Join Date: Dec 2010
Age: 53
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Vehicle: 2011 Dodge Ram
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Engine: 2008-???? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
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Default Persisent Misfire in Cylinder 5

Prior to getting a 'rebuilt' installed in my 02 Ram 1500 3.7, (the original engine ran ok, but a host of issues indicated a new engine was needed) I got a persistent code for 'misfire in cy 5'.....
Now that the rebuilt is in, the same code continues. I've replaced the coil, injector and plug in cyl 5, to no avail. We're going to pressurize the top end with a 'smoke machine' to see if the plenum is cracked. While the engine runs smoothly under load, it idles a little to roughly for my liking. I'm told that 'all V6's idle roughly, to be expected'.......
Anyone else have this problem with their 3.7's?....If the 'top end' isn't leaking, what else can we check? Any ideas?
thanks
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