Something else to consider, for those of you having trouble starting your DLE-30 engines, is the size fuel tubing you are using. When I first setup my QQ Yak I used 1/8" ID Tygon fuel line throughout (as allot of people new to gas engines will do), and had great difficulty starting mine. Jody, at Valley View R/C, told me that there is no need to use anything larger than 3/32" ID fuel line (the same size fuel tubing most of us use in all of our glow engines), and even told me that the larger diameter fuel tubing could be the source of my problem. After swapping out all my fuel lines with 3/32" Tygon, my DLE-30 now starts very easily. Usually 2-3 flips with the choke closed to get a pop, and then 1 more flip to get it running with the choke open. The most I've ever had to flip mine to get it started was 6 flips, and that was with the carb set too lean. A little adjustment, and it was starting up in 1-2 flips again.

Also, make sure to zip-tie all your fuel lines if using Tygon fuel line. Heat and exposure to fuel causes Tygon to soften and expand, which can cause air leaks in the system. This can drastically weaken your fuel draw, and effect the overall performance of your engine. This is another area where the smaller 3/32" ID fuel tubing works better than the larger 1/8" ID fuel tubing, as it fits the fuel fittings much better. The larger 1/8" Fuel tubing can actually kink when tightening the zip-tie around it. Because most standard zip-ties (the type most people use) have a little area near the head that doesn't contact the fuel tubing when tightened, and this can cause the tubing to kink in this area when tightened. Which could cause an air leak in the fuel line.

Jody also told me not to put fuel directly into the carburetor. If the fuel's not getting there you most likely have other problems.

Just a few things to think about when setting up your gas engines...

Mark