canardlover

Just bought a used DLA 32cc gasser and will bench-run it soon. Found one problem though - the spark plug cap will NOT snap on and stay in place as I want it to. It falls off at the slightest touch. Therefore I fabricated a piano wire spring to secure it in place(see pics) The plug cap metal shield does indeed touch the plug body but I assume that is intended or at least allowed..??!!
Please comment on this before I start up the engine and possibly destroy something in the process....! THANK YOU..!

A. J. Clark

The cap is not down far enough. Push down on it and twist back and forth until it goes down around the hex part of the plug. If it still doesn't hold good on the plug you can put a small hose clamp around the base after you get it seated down.

tedsander

You may have to do some research/calling. See if you can contact the manufacturer of the ignition system (maybe RcExl) or the engine manufacturer.
They make caps to fit specific brands of plugs. I had a Champion plug in my engine, and I fought with RF noise problems for a very long time. Turned out the cap was made for an NKG plug (per RcExl). It fit, and no more RF noise!
Although the plugs were of the exact same type, it was very noticeable in side-by-side how differently constructed they were.

canardlover

BINGO..!!!..thanks a lot A.J...!!! Twisted and pushed as advised and that did it..!!
tedsander: my ignition system is FTL CDI model A-01, will look around for spares here in Sweden first. Spark plugs are available so I will check what is most suitable for me.
Thanks both of you for quick and fruitful replies, wish me luck when I start it up, the engine has been shelved for quite a few years.

While I have you "on the line" guys: I ponder whether I should skip the regular tap gasoline as it contains 10%+ ethanol these days and go for alkylate fuel instead..?!?!..whaddayathink..?!?!?