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73' F-250 problems.. HELP!

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Tim Shultz

09-30-2006 07:33:15

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ok, heres the scoop, I check the oil in my truck this morning, it has a 360, and it seems that there is very little oil left in it.. but plenty of gas... this means my rings are shot right? I have a 390 just sitting around, guess I will be swaping motors sooner than I thought hu"? thanks for anything you can tell me! Tim Shultz

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Davis In SC

09-30-2006 19:41:20

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Re: 73' F-250 problems.. HELP! in reply to Tim Shultz, 09-30-2006 07:33:15

Fuel Pump, diaphragm is split & leaking...

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Leland

09-30-2006 16:07:14

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Re: 73' F-250 problems.. HELP! in reply to Tim Shultz, 09-30-2006 07:33:15

Check the pvc valve those would plug up and you could suck an engine dry fast .

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kurt:ky

09-30-2006 14:55:54

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Re: 73' F-250 problems.. HELP! in reply to Tim Shultz, 09-30-2006 07:33:15

Hey Tim if you install that 390 check out the valve guides in that engine before you put it in.The Y block engines were valve guide eating suckers.On your 360 check compression,fuel pump, and check to see if the carb is running rich,also see if the power valve in carb is not leaking, also make sure the choke is coming off.Some day I would like to move back up in your area.Hope this helps have a nice day.Kurt

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KIP in MX

09-30-2006 09:18:27

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Re: 73' F-250 problems.. HELP! in reply to Tim Shultz, 09-30-2006 07:33:15

Even if you do find your oil/gas problem, I�d still put that 390 in.

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Tim Shultz

09-30-2006 09:28:02

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Re: 73' F-250 problems.. HELP! in reply to KIP in MX, 09-30-2006 09:18:27

I had planned on putting it in this winter, when I had some spare time, but it seems I will need to do it sooner than planed! thanks, Tim Shultz

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bob farrell

09-30-2006 08:17:51

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Re: 73' F-250 problems.. HELP! in reply to Tim Shultz, 09-30-2006 07:33:15

Be nice. Roger in Iowa is trying to help. Even tho the fuel pump is "new" does not mean it is not faulty. Also if it is carberated you could have a bad needle/seat allowing an overload of fuel - thus diluting the oil with gasoline. How often do you check the oil? If this is the first you have checked it since you put the new pump on maybe it's been filling the crankcase with gasoline since. You have a gasoline problem more than a ring problem. Now go ahead and apologize to Roger and smell the roses. Hope this helps! bob farrell

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Tim Shultz

09-30-2006 08:31:09

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Re: 73' F-250 problems.. HELP! in reply to bob farrell, 09-30-2006 08:17:51

sorry, didn't mean to sound rude.. and yes I have checked the oil before, about every other day.. and this is the first time I have smelled gas in the oil. it burned a bit of oil before, and smoked a bit on startup.. but now there is very little oil left. and three days ago before I went on a 16 mile trip everything was fine.. I am not sure what is goig on.. thanks again, Tim Shultz

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Roger in Iowa

09-30-2006 07:48:58

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Re: 73' F-250 problems.. HELP! in reply to Tim Shultz, 09-30-2006 07:33:15

Plenty of gas? Is the gas in the oil?

No it does not mean the rings are shot! More than likely the diaphram in the mechanical fuel pump has failed and is pumping gas in the oil. The dilution of the oil causes the oil to pass off in blowby.

Change the oil after replacing the fuel pump. Do not run until then!!

Roger in Iowa

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Tim Shultz

09-30-2006 07:52:21

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Re: 73' F-250 problems.. HELP! in reply to Roger in Iowa, 09-30-2006 07:48:58

it is not the fuel pump, becouse it's not even a month old yet.. JUST replaced it.. don't have even 300 miles on it yet.. so I kinda doubt that is the problem.. and yes, the gas is in the oil..
thanks again! Tim Shultz

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Blue3992

09-30-2006 08:05:36

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Re: 73' F-250 problems.. HELP! in reply to Tim Shultz, 09-30-2006 07:52:21

Even though the pumps not that old, it could still fail. Infant mortality.

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Tim shultz

09-30-2006 08:09:15

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Re: 73' F-250 problems.. HELP! in reply to Blue3992, 09-30-2006 08:05:36

you really think that might be the problem? I mean it was a high doller pump.. but I guess I will check that... a buddy of mine is going to gelp me check the rings too, just to be safe.. but it does have darn near 300,000 miles on it with no rebuild... thanks again, Tim Shultz

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B-maniac

09-30-2006 19:37:07

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Re: 73' F-250 problems.. HELP! in reply to Tim shultz, 09-30-2006 08:09:15

It probably IS the NEW pump. If you were getting that much gas in the cylinders that that much was going past the rings,then it's a wonder that the truck even ran. If that was the case, it would do nothing but BLACK smoke out back and you would have to keep it on the floor to keep it running.Try a new...new pump.

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Blue3992

09-30-2006 13:59:30

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Re: 73' F-250 problems.. HELP! in reply to Tim shultz, 09-30-2006 08:09:15

Fuel pump could be the problem, even though its new. It could be a victim of "infnat moratility" a term used to describe parts that fail early on in life.

Here's the deal. Say Delphi makes 100 fuel pumps. Statistically, 1 or 2 of those are going to fail early in the life cycle. 95 or so are going to go the expected lifetime, and 1 or 2 will last extra long. You may have just happened to get one that failed early.

Now, Delphi could avoid this be subjecting each and every pump to an exhaustive function test before they would ship it. But, its cheaper for them to box them up, send them out, and just refund the money for the 1 or 2 that fail early.

Of course, it might not be the fuel pump at all, either.

By the way, this is the yellow one, right? I saw those pictures--that's one sharp looking truck!

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Tim Shultz

09-30-2006 17:07:56

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Re: 73' F-250 problems.. HELP! in reply to Blue3992, 09-30-2006 13:59:30

yes it's the yellow one, it's the V8 banana, and darn near has it's own fan club around here! lol.. and that ain't no joke.. just hope I can get this thing figgerd out soon.. thanks! Tim Shultz

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504-1

09-30-2006 21:45:51

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Re: 73' F-250 problems.. HELP! in reply to Tim Shultz, 09-30-2006 17:07:56

Tim, I had a 1972 390 that would blow the power valve in the carb every time I ran it out of gas before switching tanks. Milage would go from bad, 12mpg to realey bad, 8mpg. Just a thought.

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