|
I suspect your exhaust may be the problem. Fix that, then if applying the choke keeps it from bogging down, you are running too lean. This could be from a lack of fuel flow, a common problem. Having a fuel pressure gauge just before the carburetor can tell you if the fuel flow is restricted. If so, it could be junk in the fuel filters, or the main jet, or the idle jet. So, cleaning and inspecting the carb jets is a good idea, especially if you haven't done it lately. Replace filters at the same time. You may also be running too lean because of an air leak around the carburetor gaskets. Your idle screw may be turned out too far; it should be around 1 turn out from the seat. If you have an adjustable main jet, turning it in to the seat and back out 1.5 turns may dislodge some crud there.
Open up the distributor cap and make sure the rotor snaps back easily when you turn it clockwise. If not, the flyweights under the breaker plate will need to be cleaned and lubricated. Once it is running, turn the distributor to get good timing, as having the timing too advanced (ctr. clockwise) can also make it run too lean, as I understand it.
|