PLEASE HELP
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Joined: Nov 2018
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PLEASE HELP
Brand new to the site, no clue where my post belongs. I'm in way over my head, 25 year old with no mechanical experience. I own a 92 f350 7.5l and it has sat for at least 2 or 3 years. Ran when parked. I was advised to clean the throttle body and gas tanks before even trying to start it. Won't sugar coat it, I'm clueless and in need of some major help. This is just to get it running. Plan to do alot more afterwards. Any replies on where to post or on the actual topic itself would be immensely appreciated.
More Turbo
Joined: Jan 2002
Posts: 630
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From: New Hampshire
Welcome to FTE! I think you are in the right place. First question is how much "fuel" is left in the tanks? Is it dual or single tank? There are a few methods for emptying the tanks, one of which is dropping them out of the truck. Another way would be to disconnect the lines from the fuel rail and direct the fuel through a larger hose to a catch can. You will need to replace the fuel filter after sitting that long as well. If the truck has almost no gas in it like mine did after sitting for 2 years, you can add 5 gallons of fresh gas and a bottle of B-12 fuel injector cleaner. If the throttle body isn't stuck, you probably dont have to clean it too much. If you decide to drop the tanks, be careful and do some searches on this site.
Senior User
Joined: Jul 2018
Posts: 376
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Get as much fuel out as you can and clear the lines with compressed air. Change the fuel filter and charge the battery on an actual charger. Wouldn't hurt to remove the plugs and shoot a little (very little) penetrating oil in each bore. Might as well swap the plugs too.
Since you will have cleared fuel lines, itll take some cranking to get fuel up to the engine before it fires up.
Since you will have cleared fuel lines, itll take some cranking to get fuel up to the engine before it fires up.
Lead Driver
Joined: Feb 2002
Posts: 7,952
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From: Greater Austin, Texas
Since you will have cleared fuel lines, itll take some cranking to get fuel up to the engine before it fires up.
I second the recommendation to pull each plug and shoot a little oil in each cylinder. I personally use transmission fluid for this.
If you have fuel on the rail but it still will not start, shoot a little starting fluid in the TB. If it still won't start, you probably do not have spark.
Senior User
Joined: Jul 2018
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I recommend instead of cranking on it, just cycle the key from off to on several times and allow it to sit in the on position for 2-3 secs each time. This will run the fuel pump (listen for it to make sure your fuel pump is working - you should hear a whine sound from whichever tank the switch is on) for 2 secs each time. Check for fuel pressure a the fuel rail, once you start getting pressure, then try cranking it.
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