Intermittent slow crank

[hgeranium]

Battery is 8 months old. No idea on the starter but I’ve never personally replaced it. Over the past week the truck has been intermittently, but becoming more frequent, cranking very slow. It’s cranking like the battery is out of juice, but I know it’s not. I tested it with the meter and it’s a perfect 12.4. I’m worried it’s the starter itself because it’s going to take me a couple of days to source one. Could it be some grounding or resistance issue? Both battery terminals are tight and free of corrosion.
 

The truck will always end up starting up though. Sometimes it will go away and start up normally  

[hgeranium]

I would go through and check/clean all the grounds but I’m at work. I wanted to post this so I had a starting point for when I got off today and see what people say. If it’s not the starter itself, the most likely culprit I would imagine would be the ground cable on the starter itself. I’ve got a lot of oil leaking in the back, and the starter has plenty of gunk and oil on it. 
 

I also have not refreshed the dipstick tube ground yet, but I think that’s unlikely for this specific issue considering everything in the truck works perfectly other than the starter intermittently

[89 MJ]

I think you're on the right track. The starter side of the battery cable would be the first thing I would check.

[TheNerfsmith]

2 hours ago, 89 MJ said:

I think you're on the right track. The starter side of the battery cable would be the first thing I would check.

I would agree, although my starter issue was a really poor connection and you had to yank on the wire to get it to start.