450 lp no start

johndeerered · Mar 24, 2014

I got a 450 lp home from the fence row and trying to start it, it will crank if you spray carb cleaner in it and will run fine, but will not start back up until you spray it, don't know to much about lp parts. Can't see it leak like gas, so where to start. It has ensign parts on it and no one around here knows of any parts for them, thanks for any help.

John A. · Mar 24, 2014

JD, Sounds like the Diaphragm has a hole in it....
Dead cold All LP tank valves OFF,... Ignition ON, start cranking the engine, crack open Vapor valve I will bet it starts....If it does then you need a new Diaphragm! Hope this helps.
Later,
John A.
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If you need a another Diaphragm there are 2 options to you,... buy s used Vaporizer off of E-bay or C.L. and simply remove / replace the vaporizer. or Buy a new on from some place, there are a few guys around that make new ones but some-guys claim they are too stiff.
Holler back if it works or Not.
If you want to call my # is 512-577-3837.
jas

CenTex Farmall · Mar 25, 2014

Could be stuck regulator as John A says or could be the filter is plugged up. They typically don't get changed like they should.

With just the vapor valve cracked open, loosen a fitting south of the filter and see if there's pressure. Try it at the regulator too and see how far along fuel is getting. If it's been sitting a while I'll bet there's a sticking valve in the regulator.

johndeerered · Mar 25, 2014

I'll give it a try and see what happens, let you know, thanks.

johndeerered · Mar 25, 2014

did not seem to work, but i removed the air pipe from air cleaner and put my hand over the air intake and it started, will start back up if it dont sit long, after a few minutes it will not start back on its own.

450 lp no start

johndeerered

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John A.

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CenTex Farmall

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johndeerered

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johndeerered

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