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View Full Version : 1986 K10 fuel system????


mjealey
06-18-2012, 07:23 AM
Hey guys I need to do a complete fuel system from tank to the pump. I have bought the tanks, just need to know to buy 2 or 3 outlet sending units. Anybody have a diagram or explain how it is done on their 86 or equivalent year?
jt1200r
06-18-2012, 10:03 AM
look at what you have to replace
GreaseDog
06-18-2012, 10:20 AM
86 should be a 3 outlet.
mjealey
06-18-2012, 11:19 AM
86 should be a 3 outlet.

The problem is I have absolutely nothing to go buy. The truck as it sits has nothing but a cab on a completely redone frame. I got the truck from a local restoration shop where a guy dropped the truck off to them to be redone, lost his job, couldn't pay for it, so I wound up with the truck somehow.....:rolleyes:

So if it is a 3 outlet, then 1 goes to carb, 1 is return line, the 3rd outlet goes where? I have 0 to go buy........... I have the brand new tanks, sending units, and selector valve, just need help with the rest.........
mrbray101
06-18-2012, 05:01 PM
Does the third go to the filler neck as a vent?
mjealey
06-18-2012, 05:25 PM
Does the third go to the filler neck as a vent?

I have done literally 6 hours of research on this and have peaced together that the 3rd is the vent line and runs up to the charcoal canister, which I know I do not have since the only thing there is the cab and all body pieces painted but off the truck. I am not sure what to do with the vent line though. Some people do not run the cannister either and they put a little 1/4" air valve on the end of it and just hang it somewhere in the back of the truck?

or those that have a 1986 or equivalent year, what is the best way to do the vent line?
LeoP
06-18-2012, 09:11 PM
does it have dual tanks?
mjealey
06-19-2012, 06:39 AM
does it have dual tanks?

Yes, it has dual tanks on it. I bought 2 and the bed has a cutout on the passenger side. I bought the control valve and the switch to make it 2 tanks.
rich weyand
06-19-2012, 08:11 PM
You can cap the vent on the sender unit, and then vent the fuel caps. 1/16" drill right down through the center.
mjealey
06-19-2012, 08:25 PM
You can cap the vent on the sender unit, and then vent the fuel caps. 1/16" drill right down through the center.

Thank you much!!!!!! I am going to try that first to clean things up and the fact I do not have a canister yet for this truck!!!!!!