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I've been trying to get this truck my father and law gave me up and running and I've hit another wall. When I tried to start it the other day, instead of turning over, I instead heard what I can only describe as a slow metal on metal grinding sound. It wasn't even pulsing like you might expect from a starter cranking. I've scoured the internet and flipped through pages of search results on this forum and I can't even find a similar situation so I was hoping someone on here may have some experience to share.
I tried jumping the truck which made no difference. I did not test the solenoid as I didn't know to do that until I started digging into this (I'm pretty new to diy vehicle maintenance). It does seem that power is getting to the starter, though, and the sound of the grind makes me feel a fair amount of power is getting there.
Its an 1976 F250 with a 390 engine. Let me know if I'm neglecting any other important information. Thanks so much!
Welcome to FTE One thing to check before trying to start a motor that hasn't run for a long time, is whether it turns over freely. Has it been running lately?
Thanks for the reply! I apologize. I should have mentioned that I have had it running and even moving since I've started messing with it, just not well enough to be safe on the road. Transmission is slipping but that's another issue entirely. I was trying to start it to get it on even ground to see if fluid was the issue and that's when I ran into this starter problem. I had started it probably two weeks prior to this sound happening. Its super cold blooded so I have to crank it a long time, so that's why my first thought was to jump it.
Maybe try turning the motor over by hand, just a bit, a 1/4 or 1/2 turn and see if that helps. Not up to speed on 390s, but it may have a bad spot on the ring gear? Total WAG.
Like others have mentioned, see if you can turn the engine a 1/4 turn and then try to start it using the key. It sounds like you may possibly have a bad flywheel/starter ring. Or, it could even be as simple as having a bad starter.
It may not hurt to go ahead and remove the starter and look at the gears/teeth on the bendix. While the starter is off, look at the teeth on the flywheel/starter ring.
You didn't mention if the truck has an automatic or manual transmission. If it's a manual transmission, you could possibly get it started by getting a good push, then with the key in the run position, put the transmission in 2nd gear, and then release the clutch pedal.
You mentioned that it may sound like a slow grinding noise. It's possible that the battery is bad, and may not have the cranking amps to fully engage the starter. If that's the case, again, check your connections, and specially the grounds. Could even be a weak battery.