700n OS105 fuel leak

[waveydavey]

If it spits it out of the carb make sure the regulator is clean and the spring is in good condition, essentially the pressure in the tank is pushing it past the reg. Mine does it when it's been sitting for a while and it's a bit gummy. Clean the inside including the silicon diaphragm with IPA, make sure spring is in good condition and it'll be reet

[bergen50uk]

I had a similar symptom on my OS 91 with fuel coming out of the carb and going everywhere. Turns out it was to do with the regulator on the carb ( how the needle inside the regulator seats ).

New regulator fixed the problem completely

[chrisleematt21]

I have had the regulator apart, gave it a blow with the air line, it seems to working OK, from what I can tell.

I'll have a look and see if the spring / needle can be purchased as a new regulator is £105!

[bergen50uk]

The issue is, over time the needle stops seating properly, it may be possible to repair the seat with a small drill but I just replaced the regulator.

I got mine from RCJapan at much less than the cost charged over here.

[chrisleematt21]

Did you get stung with import charges?

[bergen50uk]

Cost around £75 all in including shipping, VAT and handling charge this end.

Also none in stock in UK when I needed mine IIRC

[yuppyflyer]

I also need to strip the regulator regularly when the fuel starts coming out the carb. Not replaced any parts yet.

[waveydavey]

Chris, it takes 10 minutes to clean regulator, don't go replacing it until you've done that at least and tried it

[chrisleematt21]

I taken it apart and blown it through with an air line, ill get some IPA try that.

[JoeBailey]

Over a period of months the nitro will get every where in the model, and I mean everywhere. A good session of backwards inverted will see it dripping out the canopy if it's a bit rich, and the 105 likes to be rich.