Darren Buckle

Thanks Babylon. I have removed both pipes and replaced with new with no bulb. If I blow from the Exhaust fuel comes through. Or do you mean empty tank with just 2 line attached and blow down the exhaust line? Does this need to be done in water to see bubbles?

Thanks all. Using 25% already. Have tried a new plug and no difference

Quick update for anyone that may be able to help! I ordered a new carb just to see if it made a difference. I reset to factory and no change. I did as suggested and removed the primer bulb. New fuel line and sucks fuel when spinning over with no glow and finger over exhaust. Starts then dies (i assume when fuel is gone from carb). Bubbles seem to go back down the pipe? Put the original fuel lines on. Primed and it started, then again, after a few seconds (ish) dies. Squeeze the primer and off she fires again. If I keep squeezing the primer while it is running she carries on running (and I can even remove the glow starter). As soon as i stop squeezing then she dies. I would assume a vacuum issue but it draws through fine with finger over the pipe and spinning the motor over. Picture attached of how it looks back to default. Any help more than appreciated - it is really doing my head in!

Thanks Babylon. Will remove the bulb. Bought second hand but only run once (apparently but it does look spotless and new). I have the pistol grip but no attachement so using a de-walt on high speed. Does get it to fire but then dies. Confused by the factory settings on the carb. LSN i guess is in the front of the carb where the throttle linkage goes back to the servo? If so, there is no way that is adjusting with the metal attachment that goes over it. HSN adjusts ok and, of course, idle

Hi and thanks. Can see where you are coming from. Will check again but sure I am 3.5 turns out. Cheers

Hi All, Newbie here!! sorry!. Getting back into RC and purchased a Thunder Tiger Sledge Hammer S50 for me (and the kids!!) Had nitro back in the day which consisted of a fuel pipe to a basic carb and nothing else. This thing has me stumped! I cannot get it to go! - well, I can if I prime at full throttle, then attach glow starter and spin it up. Lasts for about 5 seconds So - I have reset LSN and HSN back to factory. It has a primer bulb which just seems to want to detach from the fuel line and spurt fuel everywhere if pressed hard to prime and still the air bubbles won't move to show fuel going in. (with or without glowplug if this helps). If primed direct to carb or a small drop with glow plug out into the cylinder she fires up straight away (but then dies because of no fuel) so engine seems fine! Am I missing something here? Another thing that i noticed, if it does run (or not) when spinning up the motor, loads of fuel out of the exhaust (as in, at least on tank for a sum total of 20 seconds run time over three nights!) Really could do with some help. TIA Daz