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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

83 250 300 i6 runs BAD!

 
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Old 02-05-2019, 09:50 PM
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83 250 300 i6 runs BAD!

Hello everyone this is my first post!! After reading these discussions for at least five years I've decided to join in the fun...
I just bought this 83 3/4 ton with a 300 for 350 bucks.. Guy said it didn't run.. Said he bought it this summer and drove it around his place a couple weeks. Apparently one day he went out there to start it and it wouldn't start. So he screwed with it and couldn't figure it out. Sold it to me.

so I rebuilt the carb. (Carter 1bbl)
Set the timing (witch was waaayyy off! Like 15 degrees retarted)
pulled the timing cover (gears looked amazing and marks aligned perfectly at tdc)
It has spark.
EGR has been deleted.
No vaccumm leaks..
Cylinders all have above 140 psi.
So my question is..... What the heck is going on??
I finally got it to start and its running super rich and puking blue smoke.
I only have the mixture screw out 1.25 turns..
Choke is working as it should.... Any ideas???? Thanks!
 
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Old 02-06-2019, 08:23 AM
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Float level set to high. Being it is running rich it could washing the oil off the cylinder walls and why the smoke.
Also check the oil to make sure it has not filled up with gas from a bad fuel pump or a lot for gas down carb trying to get it started, not you but the other guy.
Dave - - - -
 
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Old 02-06-2019, 08:31 AM
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Is the 1983 a California model or 49 state?
 
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Old 02-06-2019, 10:48 AM
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Thanks i will check it out.
and how do you know if its a California model?
 
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Old 02-06-2019, 11:33 AM
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Originally Posted by Montana-Slim View Post
Thanks i will check it out.
and how do you know if its a California model?

Does your distributor have a connection for a vacuum line and is it hooked up?
 
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Old 02-06-2019, 12:40 PM
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Yes, Franklin2... I was thinking the same thing. To the OP, if it happens to be a California unit [?], it likely will have the feedback ignition and carburetion system, which is different than the 1983 49 state unit with Duraspark ignition and no feedback carburetor. That is why I asked.
 
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Old 02-06-2019, 01:53 PM
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So I checked the oil.. And it has an unbelievable amount of gas in it... Would this make it run super rich?? Also yes it does have a vac line to the dist. And yea it is hooked up. If you unhook it and plug the port on the carb it runs worse...
 
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Old 02-06-2019, 02:14 PM
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You have a vacuum line, so you do not have anything special on this engine.

All the fuel in the oil is coming from the carburetor overflowing with fuel. You have a piece of dirt stuck in the float needle in the carb, and it is overflowing with fuel, flooding the engine out and filling the crankcase with gas. Peck on it with the plastic handle of a screwdriver and see if you can get the dirt dislodged.

Or, I suppose the fuel pump could have a hole in the diaphragm also.
 
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Old 02-06-2019, 07:25 PM
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Figured her out! Changed the oil (which seemed to have about a gallon of fuel in it lol.
cleaned up the carboned up plugs.
smacked the carb like you said
Did a little fine tuning and she's cherry!
Silky smooth staight 6

Thanks guys!
 
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Old 02-07-2019, 03:03 PM
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Good to hear you got it running smoothly.
Keep an eye on the oil level if it starts to make oil change out the fuel pump.
Dave - - - -
 

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