hi all,i have a problem with my a12 engine it hard to start when it does start it will not idel I tried a new dizzy cap points are not very old. the new carburettor has been on for 2 months, when I do get it running its runs rough. has got any ideas will much appreciated thanks

When did the problem start happening? That will help narrow down the likely cause.

A new carburetor will not idle correctly until it has been tuned. Set the idle speed screw then the idle mixture screw.

it started when I put some petrol in ,but I put petrol in my other car as well nothing happen to that car

For idling problems that start with a tank of petrol, I would rinse out the fuel bowl.

hi I got some carburettor spray cleaner and got it idleing just but back firing in carburettor and running rough any ideas

Know its stupid but there could be Vaccum leak ?

rev it up with the filter cover off and put your hand over the carb inlet, it will want to stall then take your hand off letting the revs increase.do this a few times and if your lucky it will pull the #OOPS# out off your jets. you most likely got a tank full of water.

hi there was leak but was fix, I don't know much about the carb if you take off the air filter and looking down the carb only one jet putting fuel in but the other one nothing is that normal???

That is normal.

clean out carb sounds better but still back firing through carburettor. the manifold thermostat the shaft is very worn would that cause the back firing