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Dayton 150,000 btu that won't stay lit

It is getting fuel, I cleaned the air filter, it sprays fuel and you can see the spark but won't lite

I am having the exact same problem with my Dayton 150,000 BTU. There is fuel, spark and the fan runs but it will not light up. I took the cover off and it would light... but I think that is because the fan was not forcing as much air across the spark and fuel. Seems like the fan is not allowing it to start.... Suggestions?

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  • ekim1313 Dec 22, 2008

    my 150,000btu dayton does the same thing, after changing the switch,spark plug, photo cell, filters, i realized it would only light with the cover off... the probelm is the air adjustment on the pump but i have no idea what to set them at....

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  • Dayton Master
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See if there is a pressues switch on the heater one of the tubes could be blocked,

Posted on Dec 08, 2008

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17 hp briggs stratton ohc


Clean or change air filter. Clean, gap or change spark plug. Empty gas tank add fresh gas with Stabil. When spark plug is removed pull rope several times to blow out cylinder. Spray starter fluid in spark plug hole before replacing spark plug. Clean outside of carb so choke works freely. Spray starter fluid into carb breather hole with air filter removed and try to start. if running replace air filter and cover. If no start disassemble carb and clean. If no start replace carb.

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Are you pulling the plug to check for wetness after cranking it a few times, WITHOUT using the starting fluid? Also, I would recommend using carb cleaner in place of the starting fluid. Starting fluid runs the engine VERY hot for a brief time and can possibly damage rings, valves, and aluminum parts.

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Why does my 1995 mazda protege sputter and die when i accellerate


An engine needs three things to function correctly: (1) the right amount of fuel; (2) the right amount of air; and (3) an appropriate spark. I would also add a fourth point for a gasoline engine: appropriate compression in the engine. A worn-out engine won't perform well, even if items 1-3 look good.

Poor fuel flow is one possible cause of poor performance. A clogged fuel filter is only one possible cause of that. You might have a weak fuel pump, although with the electric fuel pump on this car, that would either have the car running or not running at all, not running poorly. You might very well have a clogged fuel injector--gas is getting there, but an inappropriate amount is getting sprayed into the combustion chambers. You might also have a clogged fuel intake screen inside the gas tank--the fuel pump might not be able to **** up enough fuel.

Air is another possibility. Check your air filter. Is it clean? A clogged air filter will cause incomplete combustion when you step on the gas because not enough air is getting in to create a proper air/fuel mixture. A simple test for this is to try running the car--VERY BRIEFLY--without the air filter. Does it run better? You should not run your car without an air filter for any longer than diagnostic reasons--sucking dust and dirt into your engine is a fast way to ruin it--but it's an easy and essentially free test you can perform. Or you can just replace the air filter if the one you pull out looks nasty.

A final consideration is spark. If you have a weak spark, you won't get as strong an explosion in your cylinders, yielding less power and stumbling. Or, if the spark comes at the wrong time, you'll have the same problem. You can check for a strong spark by taking a spark plug--an old one, a new one, one that doesn't even match your car, and using it to test the spark coming off each of your spark plug wires. Attach the plug to a wire you disconnect, ground the tip of the wire against exposed metal on your engine, and look for a nice healthy blue-white spark. If you see a yellow or orange spark, that's not so good. That could indicate a weak ignition coil--or also old spark plug wires that are leaking voltage. Spark plug wires should probably be changed every 5-6 years; they're not a lifetime part of your car.

A final consideration I didn't list previously is that you may have a bad O2 or other sensor that measures and adjusts the air / fuel mixture. A bad sensor will force your car's computer to operate on a default profile designed to let you limp home. However, it won't perform particularly well.

Good luck; I hope this gets you pointed in the right direction.

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