460 troubleshooting help needed please.
#1
460 troubleshooting help needed please.
I recently purchased a very clean 95 F350 Centurion duallie with a 460, AT, 2wd, 109k miles original. I bought it with a bad motor and I need some advice on where to start troubleshooting, or whether this engine is in need of a replacement.
General info on truck:
109,000 miles
Maintenence records indicate a very good history of oil changes, tune ups, etc.
I do not know anything about the specifics of how it "died". I bought it third hand and this info was really vague.
Symptoms (as known so far):
Starter will engage but engine will not turn over freely.
Water in oil pan
no water in radiator
I have a moderately high mechanical ability as well as a well equipped shop and such, but I am really at a loss on what direction to take here.
I don't have a lot of money, but for now I have plenty of time and don't mind getting my hands dirty.
Any help would be greatly appreciated.
I'll post here with updates as I move along in this and/or try any suggestions I receive. (good, bad, or otherwise).
If you need pics or have any questions, I'll respond as soon as I can.
Thanks.
General info on truck:
109,000 miles
Maintenence records indicate a very good history of oil changes, tune ups, etc.
I do not know anything about the specifics of how it "died". I bought it third hand and this info was really vague.
Symptoms (as known so far):
Starter will engage but engine will not turn over freely.
Water in oil pan
no water in radiator
I have a moderately high mechanical ability as well as a well equipped shop and such, but I am really at a loss on what direction to take here.
I don't have a lot of money, but for now I have plenty of time and don't mind getting my hands dirty.
Any help would be greatly appreciated.
I'll post here with updates as I move along in this and/or try any suggestions I receive. (good, bad, or otherwise).
If you need pics or have any questions, I'll respond as soon as I can.
Thanks.
#2
sticky slugs...
Start by pouring a combo of clean motor oil and dry gas (one oz drygas to 1qt oil) in the spark plug holes until full (7.5 should take a little less than a qt per cyl at bdc, account for 6 qts) Need to lube the cylinders and get the water out. Let it sit for a day or more. Suction the mix out, replace engine oil as normal with he mix you pulled and do a compression test. Low compression and/or still unable to turn freely or easily means likely have to replace piston rings and hone the cyls.
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#11
Warp:Routie; I will look into this a bit more as it sounds like it might help with getting it to turn over.
I don't know how long it has sat for, but in the maintanence records I found a receipt for a dealership oil change in April '14. So it seems as though the truck sat for around 8 months at most.
ponykilr and Diesel_Brad: I I suspect this might be the underlying cause of the failure as well after looking into it a bit more. What is the best way to determine if this is the cause? Also, assuming this was the cause and it is behaving the way it is now, would a rebuild/replacement be my only recourse?
Thanks again for the insights.
I don't know how long it has sat for, but in the maintanence records I found a receipt for a dealership oil change in April '14. So it seems as though the truck sat for around 8 months at most.
ponykilr and Diesel_Brad: I I suspect this might be the underlying cause of the failure as well after looking into it a bit more. What is the best way to determine if this is the cause? Also, assuming this was the cause and it is behaving the way it is now, would a rebuild/replacement be my only recourse?
Thanks again for the insights.
#14
I'll try pressurizing the cooler tomorrow if the weather isn't too bad. I'll also drop the oil pan and post pics of the contents.
I'll update as soon as I can.
Thanks a ton folks.
I'll start trying to source a used motor locally as well, but either way I need to remedy the cause. I saved this truck from a trip to the junk yard. It's worth saving in my opinion. I just hope I'm right. Lol. I'll post pics of it tomorrow. Maybe I'm in over my head. ..
I'll update as soon as I can.
Thanks a ton folks.
I'll start trying to source a used motor locally as well, but either way I need to remedy the cause. I saved this truck from a trip to the junk yard. It's worth saving in my opinion. I just hope I'm right. Lol. I'll post pics of it tomorrow. Maybe I'm in over my head. ..
Last edited by s10diablo; 01-05-2015 at 08:13 PM. Reason: more info
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