First post here. I tried looking around for the answer and found a few helpful things, but am hoping for some other ideas.
I have a 1997 K2500 Cheyenne with 204k miles on a 5.7 Vortec. I noticed it started to run rough, and checked out the timing. 29 degrees . I pulled out the distributor and it's got some pretty good wear on the bottom gear. The gear teeth aren't square anymore, rather they are sharp like a blade edge. See the pictures I linked (click for higher resolution)
What would cause this? Is my oil pump failing and asking that gear work real hard? I haven't ever had low oil pressure. It rotated easily, not spinning, but can be easily turned.
I'm also pretty sure it's the OEM part. I recently adjusted the timing in our 96 K1500 Sierra with 215K miles on it (replaced intake manifold gaskets) and the gears still looked really nice and clean.
I'm really curious about what would cause this kind of wear? I assume it got out of time because of the worn gear teeth. I was considering "upgrading" to a cast aluminum distributor (A-Team) but I'm wondering if I have bigger issues and should take care of that now instead...Any input is appreciated.
ETA - Sorry about the low resolution, not sure what the deal is there
I have a 1997 K2500 Cheyenne with 204k miles on a 5.7 Vortec. I noticed it started to run rough, and checked out the timing. 29 degrees . I pulled out the distributor and it's got some pretty good wear on the bottom gear. The gear teeth aren't square anymore, rather they are sharp like a blade edge. See the pictures I linked (click for higher resolution)
What would cause this? Is my oil pump failing and asking that gear work real hard? I haven't ever had low oil pressure. It rotated easily, not spinning, but can be easily turned.
I'm also pretty sure it's the OEM part. I recently adjusted the timing in our 96 K1500 Sierra with 215K miles on it (replaced intake manifold gaskets) and the gears still looked really nice and clean.
I'm really curious about what would cause this kind of wear? I assume it got out of time because of the worn gear teeth. I was considering "upgrading" to a cast aluminum distributor (A-Team) but I'm wondering if I have bigger issues and should take care of that now instead...Any input is appreciated.
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ETA - Sorry about the low resolution, not sure what the deal is there
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