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Model Forum / Radio Controlled / Air Models / September 2005newbie at 4-stroki'n , help
I have flow'n 2-strokes for a few years now and decided to give the 4-strokers a go.....and starting to regret it :-). My brand new OS -fs52s, won't run without glow power.. it starts fine (after priming) and runs and rews as it should ( needle is 2 turns out ).It also runs low rpms for as long as I tested.( 2 mins. ) BUT as soon as I remove the glow. the engines sputters and dies. or just dies. any pointers would nice. Martin. i) What fuel are you using? ii) You're not trying to lean 'em out like a four stroke are you? iii) Is the cut at high revs/low revs/both? iv) How much running have they had? Dave :^) > I have flow'n 2-strokes for a few years now and decided to give the > 4-strokers a go.....and starting to regret it :-). [quoted text clipped - 9 lines] > > Martin. > ii) You're not trying to lean 'em out like a four stroke are you? read " 2 stroke" D ;o0 >> ii) You're not trying to lean 'em out like a four stroke are you? > > read " 2 stroke" > > D ;o0 Senior moment, oops :^) >I have flow'n 2-strokes for a few years now and decided to give the >4-strokers a go.....and starting to regret it :-). [quoted text clipped - 8 lines] > >Martin. have a look here: http://www.lymanslack.com/Articles&Archives/FourStroke.html also, 4 strokes require a type F or equivalent glow plug and it's not unheard of for a new glow plug to be bad it's not unheard of for a new engine to need the valves adjusted either from WAY over here, it sounds like the engine may be set a little rich and just drowning the fire, but that's just a guess > >I have flow'n 2-strokes for a few years now and decided to give the > >4-strokers a go.....and starting to regret it :-). [quoted text clipped - 19 lines] > from WAY over here, it sounds like the engine may be set a little rich and just > drowning the fire, but that's just a guess A pretty good guess IMO Malcolm Change your plug first, fit an OS 'F' type, then see what happens. Chris I have run (raced) OS and YS 4 stroke engines with the ol reliable K&B 1L. You don't NEED a four stroke plug to run right. Sounds like it is rich and probably needs about a gallon more breakin!  SignaturePaul McIntosh RC-Bearings.com "when steel just isn't enough" > Change your plug first, fit an OS 'F' type, then see what happens. > > Chris >I have run (raced) OS and YS 4 stroke engines with the ol reliable K&B 1L. >You don't NEED a four stroke plug to run right. [quoted text clipped - 4 lines] >> >> Chris tanx for all your help, is was way to rich at idle. 2 liters of running in later.. and it now run very nice... Martin |
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