David_C

while i was playing my hobao hyper gpx4 the engine suddenly stall and when i try to restart , the pull starter becomes so hard (super Hard) but the engine is not even over-heated.

Is it posible that no fuel is entering the engine causing less lubricant in the engine which makes the pull starter hard?

NEED HELP ASAP

David_C

how do i know that my gpx4 shifts gear - i can't identify

Wanabrc

iTrader: (70)

See if you can rotate the flywheel using your finger. It's possible that the pullstart broke.

David_C

what for rotate the flywheel ( flywheel able to rotate )
after the restart today the pull starter seems softer as usual ,but i just discovered that there is a crack on my fuel tube causing it harder than ever to prime the engine. I taped it with some tape ,might have solve the problem.
Now , how do i tune my engine (STARTED PLAYING 1 WEEK AGO)

Even when u full trotle , the engine seems to spray out fuel and comes out extremely lot of smoke , the car hardly moves. Sometimes the engine starts but after idling for 4~5 seconds it shuts off , is it the gear causing the problems?

Speedypeterb

iTrader: (16)

get some new fuel tubing and change it if its not shifting gears most likely you need to lean the fuel mixing screw turning it clockwise in but do it gradually you should get a temp guage to not run the engine to hot usually 250 f.

David_C

Thanks ! the engine seems better,but the engine is hard 2 start (primed) and when it successfully start it slowly drops the rpm and eventually flames-out

R3VoLuTiOn

iTrader: (29)

could it be a too rich engine thats flooding?

Speedypeterb

iTrader: (16)

two things it could be or both , the idle adjustment screw needs to be screwed in some to get it to stay running thats the screw near the base of the carb where it goes into the motor. once you get it to idle rev it up some to clear out the fuel then when it drops back to an idle pinch the fuel line and count one one thousands and the motor should lean out or shut off at about 3 to 4 seconds if its longer you need to lean the bottom fuel mixture screw that is in the slide part of the carb. If the motor revs before 3 seconds you need to richen the bottom, that is base set up try it should be close and if you can also find some one thast can show you because most of us learn by seeing it done hope that helps

Dredd

It is very possible that the engine is not fully broken in yet and still pretty tight when at TDC (Top dead center). I don't know if you've previously broken in the engine or not. It may need a little pre heat on it to get going.

David_C

Where is the idle needle??? Im a noob , i admit...but WHERES THE NEEDLE?!

David_C

How do i fix the flooding issue? clock-wising the HSN ?already tried not working...

Bxclip

check ur manually for idle needle..

flooding issue-

if its flooded take the glow plug out, cover engine witha rag and pull the pull start( u should see fuel soak up rag) and just pump in less fuel on next start up

Geezatec

Remove the Glow Plug & see if it frees up. If it doesnt, couple of drops of ARO or fuel, in the GP hole. Then se if it crank easily. If it cranks easily reinstall the GP and start normally.

I its a new Hoboa it hasn't broken in completely, just has a tight pinch. Give it a gallon of fuel to crank easily.

Kyo83

iTrader: (3)

+1 on checking manual. If you miss placed yours, here it is for you.

http://www.hobao-racing.com/download...ion_Manual.pdf