Help!!! 05 Hemi misfires
#1
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I have a 2005 1500 with the 5.7L Hemi. I'm getting random misfires. I changed all 16 plugs but the issue didn't improve. I had a shop look at it and said there was a crack in my intake manifold. After changing that it's still misfiring. They said there was a lot of sludge they noticed when changing the manifold. They also ran a compression test and say one of the lifters is sticking which is causing a valve to stay open. Can sludge really cause all this? I kinda feel like they are giving me the run around. Any thoughts?
#2
#4
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Not sure of the specifics on the compression test. They just told me at first it was the lifter in cylinder 3 but now it's multiple lifters that are sticking. It only misfires when the engine is cold so I guess sludge could really be the issue. I'm just not sure what my next step should be. Is there a way to get rid of sludge? I've only had the truck for about 10 months and only put 4k miles on it. They said they flushed the engine about 5 times and put multiple fuel cleaners in but nothing changed. I don't have the time or money to keep guessing with this. Just wanna pinpoint the issue and fix it.
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#8
#9
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I agree with you on changing o2 sensors for a misfire, but for his lifter Seafoam would help, some people even use marvel mystrey oil
#10
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Im a firm believer in Marvel Mystery oil. I use it in everything. Im just assuming that the shop hes taking it to sucks because they also told him fixing his leaking manifold would fix the problem. And unless I saw them diagnose the sticking lifter with my own eyes I wouldn't believe them. A stuck lifter is going to cause more problems than a "random" misfire.