440 bogging out

[Deacondog31]

1980 drifter 440
Starts fine but after a few minutes it bogs down and will not move. Holding throttle down all the way and it seems like it doesn't want to go. Then all of a sudden clutch kicks in and she takes off. Good for around 15 seconds full throttle then starts to big down again. This went on a bit then it did die on me twice today. Pulled a few times, it fired up and away I went again.

Is it carb problems or clutch problems?

Fuel is fresh mix in it also so no bad gas.

Any help would be appreciated.

[ChaChi]

sounds carb/fuel related.... When it's bogging try pulling the crank case vent and letting some fuel out,  if it picks up and starts running good it's getting to much fuel for some reason.... In the bowl of the drifter carbs there is a o ring around the econojet that could be the issue... or the floats aren't shutting the fuel supply off so it's just dumping gas...

If ur plugs are dry it could be lack of fuel, caused by bad fuel pump, crankcase vent being too loose around the barb (needs a clip to hold the line) or a carb abstruction, or crank seals

There is a small chance it's CDI (ignition) related, buy look closely at that carb first, give er a good clean and inspect! Go get a can of carb cleaner, take the bowl off and go nuts!

[Interceptor398]

Never overlook the primer.  The are notorious for leaking air into the fuel system and causing many problems.

[Lloyd (ljm)]

 I had a similar problem with my 440 Drifter.
 Checked everything..

 
Turned out I had one plug that only had full spark when it was cold. Put a new set of plugs in it and problem went away.

I'm not saying this is your problem. I would however check that alot quicker next time.

Lloyd