I got my slayer on the pavement today ! .. Factory setting .. So hard to start ! once i stop it stall after 3 sec ... To start my truck i have to press the gaz full throttle ... even there it hard ... on lunching the response is so slow ! .. i put full trothlle and it take evreything to get speed ... like having no compression in the engin .. :/ i dont know what to do now ... maybe bring it to the LHS im clueless ...
Try riching/leaning the lsn, it could be rich or too lean, so it doesn't want to idle... Maybe try leaning the hsn? I know when I put my Slayer back to stock specs it was SUCH A PAIN to start untill I leaned the hsn a little... (Or alot) It sounds rich to me, but just to make sure, you can lean the hsn and the lsn and see if that helps... I wouldn't take it to your lhs... They will most likely charge you for it, and besides, help is what me, and this fourm is for! Good luck!
Ok thanks .. Because for now my HSN is at 4 turn out ! ... and it a pain to start ... and LSN it flush .. but i did the pinch test and it stay open for very long time ! XD my rmp raise like crazy and take like 10-15min to close
Don't worry... My Slayer is well tuned right now... and the inch test takes about 15-20 seconds! Does fuel come out of the exhaust pipe when it starts? If so, it's too rich... I could use some more info on what it does when it starts, and what it sounds like and what it does when it stops running.i did the pinch test and it stay open for very long time ! XD my rmp raise like crazy and take like 10-15min to close
yes there some dark fuel coming from the exhaust .. and it sound like ... it always on the same tone like he is looking for power to get the second gear ...
did u an air leak test?? did u take the engine apart at any time?? piston orientation is important when putting back together..
The engine is new i just put it in like 2 week ago .. and i chek for leak before ...
are u still havin problems with it??
mine was acting the same way and come to find out, I had a crack in the carb housing....replaced the housing and it runs like a scolded dog
yeah air leaks are killers..
Yea still having problem ... it good at high speed it only when i start .. i push the triger full gas and it take 4-5 sec before going foward ... :/
sounds like low speed needle need to be leaned alot.. after its to running temp..
Have you checked to make sure your fuel is ok? I left out some new fuel for 2-3 days, then I tried to use it in my Slayer. It wouldn't start. I put some fresh nitro in, and it started. Go figure. Try riching the lsn a bit... Good Luck!Yea still having problem ... it good at high speed it only when i start .. i push the triger full gas and it take 4-5 sec before going foward ... :/
I always take out all the gass and put new one each run so it not gumed or bad gas ... I more a needle problème it so sensitive you turn a bit to much it doesnt work
u said the engine is only 2 weeks old.. did u have any problems when breaking it in?? start back at factory settings.. tune your hsn then the lsn..
I didnt have any problem at breaking in .. It only now i want to tune it up right i have so much pain geting the lsn well tune ... The hsn it not too bad maybe litle bit rich .. Ill fix it but the lsn it so hard :/ i put it flush but how could i know it realy flush ... Maybe it 1/16 turn out and we know it doesnt take alot to mess up a trx3.3 settings
why do u want it flush?? flush is break in setting so is 4 turns out on the hsn. if its broke in u should be leaning hsn first for crisp power.. once u have hsn dialed in adjust your lsn for crisp fast take off..
I really don't follow most of the guide lines to tuning, I've found (at least on my Slayer anyway) that when I put the lsn and idle speed to correct factory specs, it really messes up my tune. You idle speed screw could be too far in, or out. When your Slayer idles, does it creep forward at all? If so, that mean you idle speed screw in too far in. Try turning it out 3/4 a turn or so, it should help. But if your Slayer doesn't creep forward when it idles, that doesn't mean it's ok. It could be too far out, making it hard to idle, or run at all. Try checking both of them before you take anything apart. Hope this helps!
Ok so i have to tune my hsn until it run well ... and after that the lsn until i get quick start?
yes get the engine hot, then turn in the hsn in 1/8 of turn make some passes check temp, if good turn another 1/8 in make some passes check temp if good turn another 1/8 in make some passes.. if it starts to stutter or temp is over 260'f its to lean turn back 1/8... run some passes if temp is good go on to lsn.. turn in 1/8 run some passes repeat if needed..
Wow, that is almost word for word what I was going to say... so, +1^yes get the engine hot, then turn in the hsn in 1/8 of turn make some passes check temp, if good turn another 1/8 in make some passes check temp if good turn another 1/8 in make some passes.. if it starts to stutter or temp is over 260'f its to lean turn back 1/8... run some passes if temp is good go on to lsn.. turn in 1/8 run some passes repeat if needed..
what have did to it that was $200?? this your first nitro rc?? electric has a learning curve also...
did u buy this slayer new??
Yea i had electric OFNA ultra lx2e ... but it my first nitro ... I put sway bar in my slayer 35$, i change 3 servo 30$ea .. i add proline bead-loc + SC tire 100$ new air filter 15$ ... new 3.3engin 147$ and more ... and no i bought it used from one of my friend that why i had to put the new engin ... he sold me for 30$ XD hahaha ... he doesnt use it and doesnt know the value he get it for some green stuff ... XD
Don't go to electric. It's not worth it IMO. You have to spend big $$$ to get a good brushless system, a good lipo charger, and a good set of lipos. Not to mention all of the parts you'll be breaking with that much raw power... Anyway, with electric, there's just no life to the car... Just my 0.2 cents!i put for sale today i wish i can sell it
$36 a gallon? At my lhs a gallon 20% nitro O'Donnel fuel is only $20... and 30% is only $23...36$ gallon at my LHS
Last edited by Wolfslash16; 09-17-2012 at 11:10 PM.
$36 is what I pay as well for 20% Top Fuel....in Canada
That reminds me that I have to pick up a gallon!
It snuny when iam at work and when i get home i trie to take my slayer out it start to rain .... It been a week since the last time i took my truck out so i ning ....
i know the feeling..
body on, take the temp at the glow plug down inside the head. 60f, sounds very wrong.
I wouldnt tune by temperature. I use temp as an indication of how the engine is running. are you getting good acceleration? are you getting good snap off the start?
try watching a youtube video on rc nitro engine tuning it will help you aswell "squirrel's vids have every topic"
I actually used to tune my 3.3 backwards. Instead of tuning the HSN first and LSN second, I would tune the idle and LSN first then HSN last. Mine would always run way too lean at factory settings and overheat. So I would set everything to factory and let it idle up to temp about 215°F. At factory setting mine would also idle very high, I would close the idle gap a little at a time to lower the idle until the slide was just barely open, then start richening the LSN until I got a good steady idle. Then I would make a pass or so to clear the engine of any excess fuel and do a pinch test. When I got the pinch test around 4 to 5 seconds, then I would work on richening the HSN. My theory on this was, If you can't get it to idle and it keeps stalling at low speed how can you set the HSN first if it keeps stalling at idle?
If you look at the costs a good brushless system is very comparable sometimes cheaper than a brand new nitro mill and I can guarantee that the brushless system will outlast the piston and sleeve in a nitro motor. I have a VXL motor that I've beat the crap out of for 4 years now without a problem. My 3.3 lasted about 3 gallons before the sleeve wore out and that was under perfect tune slightly on the rich side. Electric is a big cost up front but in the long run is cheaper. I break more parts on my nitro than I do my electrics. I love both my electric and nitros and enjoy running both of them either way you go it all cost $$$, but I'll stop there because it's off topic and not the place for it.Originally Posted by Wolfslash16
Last edited by CarGuy7a; 09-22-2012 at 06:24 PM.