ORIGINAL: tajadapilot
I have a new DLE111, I mounted it with the carburetor down, as is standard. I flip the prop like 50 times, noticing gas going through the pipes, and no pops or anything. The ignition is good, the battery fully charged, everything seemed fine. I am using NGKCM6 plugs.
Gas was dripping from the carburetor, even though my low needle was set to just over 1 turn. Still no pops or anything, when all of a sudden, the engine literally pops or better yet, explodes, not runs a couple of turns as it should, and fire comes out of the carburetor!
I check the spark plugs, and they are dry, and the cylinders too. Apparently the carburetor os flooding, but gas is not getting to the engine. What can I do, or what can be wrong? I want to fly this before I go back to my country, in case I need to send it back.
Any help greatly appreciated!</p>
First up - the only way the Carb can spit fire is if fuel is reaching the spark plugs. The fact it is spiting fire tells us that you do in fact have fuel in the cyulinders as that is where the plugs are usually located (I haven't seen your particualr engine but every other one I have ever seen has the plugs in that location).
Flipping the prop "50 times" and "Watching the fuel go through is telling a large part of the story. You are flooding the engine. More than likely the fuel dripping out is simply an over supply that has been pumped into the poor old crankcase.
Before you do anything else. Try this.
1 - Remove the plugs, make sure they are gapped at 0.20" (Exacto blade thickness) and make sure the cylinders are empty (This can be achieved by spinning it over with a starter while the plugs are out.
2 - Set the needles (Both iof them) to 1 1/2 turn open.
3 - check the ignition timing. It should be 28 degrees BEFORE top Dead Centre. That is where the plugs actually fire - not some simple guess by looking at a magnet.
4 - Take the cover off the metering diaphragm on the carb (If you really want to),(THe cover with the 4 bolts), remove the diapragm and make sure the needle is free to move and there is no dirt under it. Reassemble it and make sure the fork is connected with the diaphragm stud (you should see what I mean when it is apart).
5 - Remove the Reeds and make sure they are not damaged from the backfire.
Reassemble it all and follow the normal starting procedures.
Prime the engine with a few rocks of the prop until fuel reaches the carb.
Choke on, Ignition on
flip until it "pops"
Choke off
Flip until it starts
Tune it.