Show NEEDS ATTERN em TION it Is easy to check up and find smallest gap possible to use present day engines with faster aster speed peed and higher compression have created it condition that requires moro more attention to the automobiles ignition system than ever before an engineering ng bill bulletin etin just issued says the bulletin prepared by lector hector spark plug engineer gincer cla 1 offers 0 f this important information spark plug gap settings winch which formerly were more or less standardized nt at to MO inches must be now nov at to inches and distributor points in most cases nt at to inches higher sparking voltage Volt aoe Ili higher gher compression means higher sparking voltage for a given gap higher speed has a tendency to reduce the time it takes the coll coil to build up and in order to noring normalize lize these conditions the spark plug and breaker point gaps should be reduced in order to keep the sparking voltage on t the he same level the higher speed of tile the engine reduces d aces uces the amount or of current which fl flows owe into the coll coil and requires a smaller gap in the breaker or interrupter to compensate A smaller gap has the advantage of giving an extra length of time to the current for building up in the coll coil so it Is advisable to set the contact point nt at the smallest normally operating gap that Is possible ignition systems differ lt it ts Is la not 0 t possible to a ru rule e in tre regard g n ril to distributor points as in 1 the case of bf spark plugs because the various ignition systems differ so widely in their construction and characteristics acte that some of them may require only a gap while others need a gap as I 1 high as in tile breaker breaker nevertheless it Is easy to ip cb chock e ck up and define the smallest gap that it Is possible to use and the nw inn mortty of ignition systems will work satisfactorily with a gnp gap of about 01 ol i to when gaps are too wide the roo mol to rist will generally experience engine trouble at high speed although he may get satisfactory performance at low speed on the other hand too small a gap MY may work at big high h speed but likely will be unsatisfactory at low speed because it will riot not in make 11 ke a clean break preventing the coll coil from delivering a high enough sparring sparking voltage to the plug tho the bulletin recommends checking the ignition system every on one e thousand miles and especially inspecting the brealer breaker contacts because it Is paramount that they be clean and square and spaced as described neive for cleaning a fine file and some bmw no 01 sand paper la Is in addition to the brenker points th the e spark and ignition cable should niso be checked during the in s p action which altogether required only five minutes and will he be worth a thousand miles of improve engine the bulletin adds |