dclintonh

ok i finally got this thing broke in and WOW its fast but when it cuts off stalls out its hard as @#$% to start back up. what could be the problem? it started on the 1st pull ever and now its rediculous, itll fire up after awhile of pulling and then flame out . ????????????????????
thansk

hawk900

put an os a3 glow plug in it

and get a good glow ignitor

srm60

I am having the same Issues. At first I thought it was flooding but no. Maybe too hot??!!

hawk900

http://www.rcuniverse.com/forum/m_5738260/tm.htm

this may help

mozzzy_2000

there's nothing unusual in what you are experiencing hey. All engines are notoriously fickle for the first couple of litres. What could be happening is that you are running it too ean, its heating up, konking out and hard to re-start. Its a very common occurance and all I can say is patience is the key!

rclynx

Thanks mozzzy how ya been M8....................was about to say the same thing and the OS 18 engines like to run a bit fat compaired to the VX engines[:-]

ehroof

i have a few of the os .18 and i never have a problem with them starting, what you are discribing is a blown motor, starts and runs then shuts off and very hard to start again, either that or your running it very lean and its very hot but the os engine is very easy to start.

mozzzy_2000

its a bit of a stretch to say its a blown motor dont ya reckon? I own several engines and they ALL have been through problems like he described and its almost always a tuning issue in th end. Its very common. Anyway they're my thoughts.

Hey Rclynx I'm well; you?

dclintonh

im just running it lean, it fast though, i guess ill slow it down

Chubbysdad

My Feedback: (1)

I dont think it is far fetched with a blown motor. As he wrote above, he is running it lean. Running a motor that lean will kill it in no time. (ask my son ) lol 9-10 times if it is that hard to start once heated up, it is blown as ehroof said.

dclintonh

ok i know it not blown atleast in my case, i still have lots of compression & pinch.
im thinking i might need to seal the rear bearing

dclintonh

factory settings 2.5 turns out starts no problem just runs like crap, i ll start over and not go so lean this time. yes it does start 1st pull real rich

Chubbysdad

My Feedback: (1)

Good then your not too far off..

ehroof

the first sign of a blown motor is shutting off when hot then very hard to restart and lower compression when hot. The compression gets less as the engine gets warmer. But if your running it lean like you said that may be the problem too.

dclintonh

i dont get it, lean like when it wont start back up its freckin sick fast. but where its rich it sucks, its like the old vx(ok not that bad) but damn it flies lean. i still have the stocker exhaust stuff though.

ehroof

there is a fine line between running lean and being tuned perfect, lol.

hawk900

Weather plays a part in tuning too! hot, cold, wind, rain, snow

allenthen831

you can run your engine lean but then your gonna have to buy a new engine becuase your gonna mess that engine up lol just try to tune it im not that great at tuning but i know alittle about it