Ticking upon startup
#1
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I did a search but all I saw was issues about "Hemi tick". I have a 2003 Durango with the 4.7 and she ticks when you start her in the morning or if she's been sitting for a few hours. Sounds like a lifter dying but I was just curious if this is a common issue with the 4.7's. Initially I was thinking if I have to change a lifter, I might as well change them all. Now I'm thinking if I'm going to do all that, I might as well upgrade the rockers while I'm at it. I'm not planning on modding the drive train much, if any, but if I have to tear into the top end, it might be worth while to go to the next size ratio rockers for an easy HP increase. Any thoughts on my issue would be appreciated. Thanks,
Ralph
Ralph
#2
#4
#5
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I had/have this too. It can be caused by 2 things. One a lifter(s) may be going bad (this was my case). The exhaust manifold if the car is cold can cause this too and just need to replace the exhaust mainifold gaskets. #5 intake was the only one on mine ticking and I just replaced that. Note also get new rods too as the old rods may not sit right on the new lifters. Might look into replacing the cam and timing chain while at it if you want to as a general maintenance. The last two aren't needed but just suggested.
#7
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#8
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I had a ticking also at startup that went away after warmup, it was my rear 2 exhaust manifold bolts on driver side. Replaced, no tick, runs great. Only place i could find bolts was dealership, 10 bucks for both with new heatshield nuts. I do have the 4.7 with 77,000 miles on it.
#9