my aprilla rs 125 wont start can anyone help

[baller91]

Hi I brought an aprilla rs 125 that had been stolen and recovered and have built it up from scratch. I have had a compression tees and it said I had low compression, so I fitted a new mitaka cylinder and piston thinking that this will fix the bike. I am getting good compression from it now and there is fuel to the engine and am getting a ok spark. I did get it running and overtime I gave it throttle it wouldn't increase much in reeves. But it kept bogging down and now it wont start and every so often it ignites the petrol for a second. I have cleaned out the carb as well. Can anyone help before I give up and take it to a mechanic.

Thanks

[N cee thirty]

new spark plug
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[Crizzo]

are you flooding the engine,is the plug wet, try opening the fuel switch a little bit at a time and starting the bike!

let me know what happens

[Bike Bunker]

[Kickstart]

Hi

On a 2 stroke the spark plug is pretty much a consumable. Best to carry a spare with you in the tool kit.

An 8 is for the restricted bikes and a 10 is for the full power versions. High revs thrashing will run the plug hotter which will potentially start to blister and fail hence the hotter plug. Low revs use will potentially foul the plug. And with a restricted one you aren't going to be using high revs thrashing it to keep the plug clean, hence the 8 plug.

If the bike is (or at least was) managing to idle but dies when given any throttle then check the reed valves.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[baller91]

turns out it was just i needed a br8 plug it started of the button within seconds lol thanks so much for helping me with my problem i wouldnt of though of a differant plug lol

[Kickstart]

Hi

Is it restricted?

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing