Question about Reddy Heater-170,000 BTU Kerosene Deluxe

1 Answer

Still stumped tbugger

Took the cover off, replaced the fuel line with a clear one, fuel does notsiphon into the nozzle right away, 2nd or 3rd try (plugging in unit).Runs great...
Is there supposed to be some kind of in-line check valve to keep the fuel from returning into the tank? took off brass fittings and Teflon taped them inspected nozzle plate (no cracks), put old nozzle back in re-started unit, same thing the fuel doesn't get to the nozzle quick enough or is there some other type of vacuum leak?

Thanks Hojo

Posted by on

  • hojo58 Jan 16, 2009

    I'll let you no what the heck it is, Like you say might be something really simple.

    Thanks again!

    Respectfully

    Hojo


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If your heater has a plastic nozzle adapter - check for a crack at its base. There could be either a vac leak- or a pressure leak at this point.

There is no check valve. And there is supposed to be a slight delay ( 2-3 seconds, maybe) in fuel pick up, but it sounds excessive, in your case.

One time, this is true, a do-it-yourselfer engineer had a similar problem. He had put a hardware store hose on his fuel pick up. The I.D. of the hose was slightly larger that factory specs, but it was all he could find. He fought the problem until he put his pencil to the weight of the column of liquid that the pump was attempting to lift, figured the column was too heavy, so he ordered a factory spec'd fuel line and that solved his problem, so he says.

Here's another wierd one. A customer brought a new heater into our shop for warranty. He was having a similar problem. Our veteran mechanic found that the nozzle had been factory overtightened into the nozzle adapter and the o-ring on the nozzle was partially restricting the fuel entry hole of the nozzle adapter. Now you know why we called him "Moses". He could work miracles.

You have a minor problem thats going to be hard to find. Just keep plugging away.

Posted on Jan 16, 2009

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REDDY HEATER PRO 70


I have a Reddy Heater R100 that ran just fine until one day it

wouldn't ignite. I took the cover off to see if it was sparking and it

ran just fine with the cover off. I got on the Internet to see if there

was a definitive answer as to why it would only run with the cover off;

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replacing everything at once. You can thank me later.

Step 1: Dumped out old fuel, made sure the tank was completely dry and

clean. Put in fresh kerosene. This is an absolutely hideous job.

Result: Still would only burn with the cover off. Said bad words.

Step 2: Replaced all three filters. Result: Still would only burn with

the cover off. Didn't say bad words, just thought them.

Step 3: Removed the end filter cover and pushed on the pressure relief

ball. It seemed to be stuck.
so I marked the relief screw, counted the exact number of turns to take

it out, and washed the end filter cover and small parts with Dawn

dishwashing detergent. Harsh solvents can melt the plastic on the end

filter cover. Blew everthing dry. Put a little oil on the spring and

ball so they wouldn't rust. Put the relief screw, spring and ball

together, making sure I turned the screw back in the same number of

turns that I took it out with, within a tolerance of about 1/8 turn.

Result: Still would only burn with the cover off.

Step 3: Downloaded a manual from:

http://www.desatech.com/manuals.cgi?products=Construction%20Heaters to

find out the spark plug gap. They didn't have one for an R100 so I used

the one for a R100EDI. I cleaned and set the spark plug gap to .055".

I think later heaters use .075" or .085". Check your manual. Result:

Still would only burn with the cover off.

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sprayed carburetor cleaner into the output end of the nozzle,

backflushing it. Four or five pieces of crud came out, onto the paper

towel. Really cleaned the nozzle good. Blew it off with compressed air

to make sure all of the carburetor cleaner was evaporated. Replaced the

nozzle. Result: O frabjous day! It worked just fine for about a half

hour, then it started coughing and smoking.

Step 5: Removed the nozzle again. Put a clean paper towel under the

input and sprayed carburetor cleaner into the output end of the nozzle,

backflushing it again. Four or five pieces of crud came out, onto the

paper towel, again. Really cleaned the nozzle good, again. Cleaned the

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Ran the tank of fresh fuel empty. Put the original fuel back in, it

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So, if in the future, I have the problem where it doesn't burn with the

cover on, I'm going to start with the nozzle, upper fuel line and fuel

filter.

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