Rc Petrol Cars

[Synergy]

ok bit of help please after getting a glow start from rob i got my car working (it was fixed by a guy my dad knows who races them)

anyway i was determined not to thrash it as soon as i got it so i used it for a bit first then i put full revs later on

it went high up in the revs as they do (eeeeeeeeeeeeeeeeee noise )

sorta stayed at that revs then went even further (wasnt expecting it) (EEEEEEEEEEEE!!!!)

then it just sorta cut out and stopped, now it wont start, what have i done?

[Lee Cable]

ok bit of help please after getting a glow start from rob i got my car working (it was fixed by a guy my dad knows who races them)

anyway i was determined not to thrash it as soon as i got it so i used it for a bit first then i put full revs later on

it went high up in the revs as they do (eeeeeeeeeeeeeeeeee noise )

sorta stayed at that revs then went even further (wasnt expecting it) (EEEEEEEEEEEE!!!!)

then it just sorta cut out and stopped, now it wont start, what have i done?

Did it just keep acelerating, and the revs got higher and higher? Most likely blown summing!

[JKH]

Sounds like you culd have run the air/fuel mixture too lean (not enough lubrication) and ruined the piston/sleeve. But..if a smart guys tuned it for you, it's likely he would have tuned it for a rich air/fuel mixture (i.e. lots of blue smoke=good lubrication), so you might still be ok.

To check:

First remove the glowplug and examine it. Test to make sure it still glows. If it's fine, check the piston. If it's seized or all burnt looking, you might have a problem. Other things to check for, air leaks around the carburator, fuel lines, fuel filter, drivetrain.

[Synergy]

Sounds like you culd have run the air/fuel mixture too lean (not enough lubrication) and ruined the piston/sleeve. But..if a smart guys tuned it for you, it's likely he would have tuned it for a rich air/fuel mixture (i.e. lots of blue smoke=good lubrication), so you might still be ok.

To check:

First remove the glowplug and examine it. Test to make sure it still glows. If it's fine, check the piston. If it's seized or all burnt looking, you might have a problem. Other things to check for, air leaks around the carburator, fuel lines, fuel filter, drivetrain.

im not kidding when i say im a total noob at this, it was a proffesional who did the car for me as he races quite a a few himself however he has moved away now, could you go into a bit more details pleasE?

[nmt_oli]

sounds like its sprung an air leak, causing it too lean off and then cut out due to lack of fuel.

It didnt just run out of fuel did it, as if they run out fo fuel while at full throttle they will rev extra high due to temp leanign of the mixture, then cut out.

air leak is most likey to be in fuel line or carb area, can be very hard to find. ive got an engine sitting at home which i need to rebuild with gasket sealant as ive got an airleak i cant find playing havoc with the tuning.

[RandomHero]

What car/truck have you got?

What fuel are you using?

What nitro content has it got?

Try adjusting the needles (high speed and low speed if it has a low speed one). Only slightly each time though, about a quarter turn. Or just go back to the factory settings which are usually a bit rich but allows it to start easily.

If you still cant get it started you will probably have to take it to your local hobby store, i dont think you would want to be taking apart your piston etc if you are a 'total noob'

[Synergy]

ok so i went out and tried it this morning it kept starting and then stopiing after about ten seconds maybe more, is this maybe not enough air? or not enough fuel going into it? any help is appreciated.

[Mr Motivator]

Well done, you probably destroyed your piston

I've got a brand new gold 0.12 kyosho engine if you want it? £20 posted?

I did something similar, but my engine didn't blow. I was just driving it down a long road, it had just shifted into second gear and then SMACK into a kerb. Was all good though

Don't drive it too fast next time lol.

edit: nitro engines are very tempremental and they do need adjusting every so often to keep them tuned up, try this to pretty much re adjust your engine completely....

next time u try to start it, make sure theres plenty of fuel in it, hold your finger over the exhaust and pull the starter cord (if you have one or press the button if you have a starter motor), keep doing this for about 2 mins (when doing this, dont use the glow starter or disconnect the wire going to the plug). Then take off your filter on your carb and holf your finger over the opening, pull the cord again for a couple of mins. Now your engine should be completely flooded. (You can also flood your engine by just pushing the primer button on your tank, but this only pushed fuel into the carb, the way i have described will pull fuel all the way through the engine).

Go and fetch the small allen key to remove your heatsink/head (you may also need to remove your glow plug using a small socket set too depending on your head) remove the head/heatsink, and turn your car upside down and drain out all the fuel in the engine, there should now be no trapped air in the fuel line. Also inspect the piston and look at the plug and check it isn't black. You might also want to check you have no fuel in the exhaust too which might have pumped through through the back pressure hose

Reassemble your engine, pop your finger over the carb again and pull the starter cord abput 3-4 times, this will condition the engine well with fuel. Connect your glow starter and try to start it as you normally would.

If it starts and cuts out again, look at the opening in the carb (which will open when you pull the throttle) and make sure you have about 1.5mm of opening in there, you can adjust that by turning the idle speed screw. Also richen the fuel a little by turning the low speed needle about 3mm anti clockwise. Try starting again as normal, it should run for longer, if it cuts out again, increase the gap in the carb and richen the fuel even more. Keep adjusting till it runs at idle perfectly, dont increase the revs yet.

Let it run a full tank of fuel at idle, then on the next tank try accelerating and eventually adjust the needles and screws to perform better at higher speeds.

Man, that was a lot of writing.

Hope i've helped

Edited July 27, 2006 by member1495

[Synergy]

thank yo u very much for your help i will try that tomorow