DLE-30 engine question
03-11-2019, 10:15 AM
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DLE-30 engine question
I have a DLE-30 engine that I have installed on a Factor 30 cc plane. The engine has never been run, but it is 8 years old. My concern is starting for the first time, which I haven't tried yet. I thought I've heard before that the Walbro carburetor diaphragm may be get too dry to get fuel flowing. If this is so, what is the normal procedure? Do I need to squirt some fuel into the carb? Thanks for any help.
Lamar
Lamar
03-11-2019, 07:19 PM
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I probably don't have anything to worry about. I have a feeling that once I choke it, it will fire like it should. If not I'll squirt some fuel in the carb.
03-12-2019, 03:58 AM
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Not done so much any more, but to make the choke more effective, we would solder the hole in the choke plate closed to make it more effective. No downside with solder, and it does help, but if you get "creative" blocking the hole with something but solder, and that doesn't work out well, the engine WILL be eating that failed attempt with predictable results.
03-12-2019, 07:46 AM
#7
Every once in a while with a new engine or one that has been sitting for a while I will fill the tank through the fuel dot and cap off then hook my fuel pump up to the vent and give a few cranks on the pump to slightly pressurize the tank then give the engine a few flips.
03-12-2019, 08:16 AM
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I wouldn't go out and buy a soldering iron/gun specifically for doing that, but if you have the stuff within arms reach, and the engine is out in your hand (like it is when you're taking it out of the box) it only takes a second to solder that hole shut. The smaller the engine, the more it helps get that initial fuel draw going. Bigger engines (50+cc) have way more air being sucked in on every stroke due to their larger displacement, so I would agree there. Soldering those closed is a waste of time. -Al
03-12-2019, 10:17 AM
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I always think of it like this:
the pump works by crankcase pulses. One flip one pulse = lots of flips.
Squirt in some gas as a prime (I use the one thimble full idea), flip and get a two or three second run and you get a hundred hard fast flips that your shoulder does not have to deliver.
Brains over brawn.
Remember the fuel tubing is empty, the pump chamber is empty and the diaphragm chamber is empty. Too many flips for me.
the pump works by crankcase pulses. One flip one pulse = lots of flips.
Squirt in some gas as a prime (I use the one thimble full idea), flip and get a two or three second run and you get a hundred hard fast flips that your shoulder does not have to deliver.
Brains over brawn.
Remember the fuel tubing is empty, the pump chamber is empty and the diaphragm chamber is empty. Too many flips for me.
03-12-2019, 03:07 PM
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Every once in a while with a new engine or one that has been sitting for a while I will fill the tank through the fuel dot and cap off then hook my fuel pump up to the vent and give a few cranks on the pump to slightly pressurize the tank then give the engine a few flips.
04-10-2019, 06:25 PM
#12
Had the same problem with a DLE 20. Flip and Flip and Flip and no fuel draw. I took the plate off the pump, soaked it in fuel for 10 minutes, put it back together and started getting fuel draw after 2 flips, started in 10. Sometimes it needs an internal prime that only soaking the carb, or pulling the diaphragm out can accomplish. Even priming with fuel didn't draw any, it was that dry.
