New Student
Currently Offline
Posts: 17
A+'s: 0
Joined: Feb 26, 2012 8:51:34 GMT -6
|
Post by kensascona on Apr 22, 2012 12:44:49 GMT -6
hi everyone i'm back having sorted out the various problems on my suzuki ay 50 with yhe help of your good selves ive now turned my attention a malaguti phantom f12 air cooled engine the problem i'm having is after replacing the missing head gasket the engine tries to fire and smoke comes out the exhaust but if the throttle is opened it pumps air and fuel out of the carb intake and won't fire at all help please  |
|
|
|
Post by JR on Apr 22, 2012 16:51:05 GMT -6
Timing? Are you sure you have it timed right? Sounds like it's one tooth off?
JR
|
|
New Student
Currently Offline
Posts: 17
A+'s: 0
Joined: Feb 26, 2012 8:51:34 GMT -6
|
Post by kensascona on Apr 23, 2012 0:41:08 GMT -6
hi jr it can't be valve timing as the malaguti is a 2 stroke hence no valves lol im' begining to suspect than the piston rings have gone allowing compression to leak past the piston and pressurising the crankcase causing the blowback out the carb
|
|
|
|
Post by JR on Apr 23, 2012 9:13:48 GMT -6
Sorry Ken went to sleep on you.  What about the reed valve? Did you make sure it was clean, smooth and not chips in it to allow blow by? |
|
New Student
Currently Offline
Posts: 17
A+'s: 0
Joined: Feb 26, 2012 8:51:34 GMT -6
|
Post by kensascona on Apr 23, 2012 10:55:05 GMT -6
i have not got as far as checking that its raining cats and dogs over here and there is no room in the garage as my classic car has taken up residence in there out of the rain |
|
New Student
Currently Offline
Posts: 1
A+'s: 0
Joined: Dec 24, 2012 13:09:40 GMT -6
|
Post by deacon19 on Dec 24, 2012 13:28:50 GMT -6
Easy evrey 1. I've got a malaguti phantom f12. L.c. What anit running its sparkin and as conpression but for some reason just won't start. Its gettin petrol to it and that but just will not start I've put petrol down the head. And still nothink any idears ?
|
|
|
|
Post by JR on Dec 24, 2012 16:13:35 GMT -6
Have you checked the reed valve for nicks or cracks?
JR
|
|
|
|
Post by alleyoop on Dec 24, 2012 17:12:33 GMT -6
If it is blowing out the Carb Also check the WOODRUFF key on the FLYWHEEL, if that is damaged that will throw off the timeing. If that is good It has to be the REED VALVE the membrane is broke and or the spring plates to make it snap shut are weak or bent or broke and NOT CLOSEING on the compression stroke and blowing out back through the CARB. The REED valve due to the SUCTION on the DOWN STROKE OPENS and lets air and gas to come in then once the suction on the down stroke is gone the SPRING PLATES on the REED Valve makes it snap shut because the next up STROKE is when it FIRES and ignites the fuel.
Alleyoop
|
|
..BAD TO THE BONE..