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

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Old 04-06-2011, 04:42 PM
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Lukes66 Lukes66 is offline
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My new fuel tank vent set-up

I haven't fueled up yet but I thought I would share what I did with my tank vents. Many 6.9 trucks have a slow fill issue due to poor venting, also the truck will not take a semi truck style diesel nozzle with the stock filler neck intact.

I removed all of the "guts" from the inside of the filler neck, then I replaced my rollover valves with some nylon elbows that are actually pcv elbows. I routed the 19/32 fuel line vent to the plastic filler housing where it vents.

According to my primitive measuring, it will clear no problem (these elbows are only around a .25 inch taller than the stock rollover valves). Hopefully it will take fuel at a reasonable rate. Now I just have to make sure I don't roll it over!

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1985 F250 Lariat Extended Cab 6.9 Diesel C6 Auto 4x4 BW1345 D50 Sterling 10.25 full float with 3.55s 20 MPG (achieved twice, averaging 16.5) 39 degree 134a A/C
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Old 04-06-2011, 04:51 PM
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That's how I did mine on my diesel, and it works very well. I didn't have those nice plastic elbows though. You may still get a little contact on the rear elbow to the bottom of the bed. It's very tight in that area.
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Old 04-06-2011, 04:55 PM
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One last pic here... This is my new LMC rear sending unit and pick up!

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Luke

1985 F250 Lariat Extended Cab 6.9 Diesel C6 Auto 4x4 BW1345 D50 Sterling 10.25 full float with 3.55s 20 MPG (achieved twice, averaging 16.5) 39 degree 134a A/C
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Old 04-06-2011, 05:57 PM
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Does a diesel have the canister in the engine compartment?
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Old 04-06-2011, 06:03 PM
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Quote:
Originally Posted by billt28 View Post
Does a diesel have the canister in the engine compartment?
no, they do not have a vapor canister.
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1985 F250 Lariat Extended Cab 6.9 Diesel C6 Auto 4x4 BW1345 D50 Sterling 10.25 full float with 3.55s 20 MPG (achieved twice, averaging 16.5) 39 degree 134a A/C
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Old 04-07-2011, 03:15 PM
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The sending unit is from LMC, but I see FORD on the label.
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Old 04-07-2011, 04:25 PM
glovemeister glovemeister is offline
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I'm curious as to how this can be done with the vent inside the filler neck on the gas pickups?
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Old 04-07-2011, 07:10 PM
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I'm curious as to how this can be done with the vent inside the filler neck on the gas pickups?
No need to do this on a gas pickup.
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Old 04-07-2011, 07:10 PM
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Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks

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1966, 1989, 1995, codes, f100, f150, f250, fill, ford, fuel, rear, sets, slow, tank, testing, truck, vent, vents

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