Rattle on startup
#11
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I went ahead and ordered a kit from Blackstone, I think I should give that a try to be 100% sure, apparently it takes 1-2 weeks for the kit to arrive. My oil was recently changed so by that point there should be a good amount of miles on the oil for the sample. I'll take a look at some upgraded lifters, would just about any lifter from any Hemi, performance or truck, fit in my 2003 motor? And thanks, I'll keep a list of parts I'll need for the job, probably throw timing chain and tensioner and gears onto that list as well.
Last edited by Marv107; 06-12-2021 at 06:47 PM.
#13
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Lol this is an old thread. I totally believe you because it's what a few people have told me by now but that's nuts because it didn't make this noise a few years ago and it sounded smooth as butter, but now it's got that almost detroit diesel sounding idle. My buddy's 06 doesn't sound like that with 160,000 miles, but I guess that's just how these 5.7's are?
#14
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Lol this is an old thread. I totally believe you because it's what a few people have told me by now but that's nuts because it didn't make this noise a few years ago and it sounded smooth as butter, but now it's got that almost detroit diesel sounding idle. My buddy's 06 doesn't sound like that with 160,000 miles, but I guess that's just how these 5.7's are?
Mine (4.7) happened at 313K. Luckily, the rocker came to rest in a place that didn't cause any carnage and I was able to replace them all (you don't just replace one or two). I don't have a 5.7, so I'm assuming things happen in a similar manner. Others may correct me.
https://dodgeforum.com/forum/2nd-gen...e-issue-4.html
#15
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I believe the 5.7 has hydraulic roller lifters, meaning there is a roller on the lifter tips. The 4.7 has plain ole hydraulic lifters. As they wear out, hydraulic lifters lose prime when sitting, which is what causes the ticking upon cold start. Once they prime with oil, the proper valve lash is achieved and the noise goes away. This can go on for many thousands of miles (even 100K or more), but eventually it gets so bad that the lifter either seizes or can no longer prime. At that point, the lifter is no longer able to keep tension on the rocker, or can't compress...then a rocker gets ejected.
Mine (4.7) happened at 313K. Luckily, the rocker came to rest in a place that didn't cause any carnage and I was able to replace them all (you don't just replace one or two). I don't have a 5.7, so I'm assuming things happen in a similar manner. Others may correct me.
https://dodgeforum.com/forum/2nd-gen...e-issue-4.html
Mine (4.7) happened at 313K. Luckily, the rocker came to rest in a place that didn't cause any carnage and I was able to replace them all (you don't just replace one or two). I don't have a 5.7, so I'm assuming things happen in a similar manner. Others may correct me.
https://dodgeforum.com/forum/2nd-gen...e-issue-4.html
#17
#20