berth control
New Member
I had engine trouble the other day, the motor lost power until it eventually died. I diagnosed it as a faulty check valve on the fuel tank, but not before I replaced the carb. and fuel pump. The new check valve got the motor running, but it does not run right. It idles rough and when I go to rev it up it backfires flames and black smoke out the carb. I thought maybe the rebuilt carb. was to fault, so I swaped it with the one from the other motor that runs perfect, same thing. Then I thought about the check valve again and swapped fuel lines between motors, no change. Plugs look black but not fouled. I cleaned them and put them back in, no change. I changed coils, again no change. I pulled the valve cover off, all the springs and rockers appear to be in tact and working fine. I don't see any coolant leak in the intake manifold and the motor is not losing coolant, so the exhaust must be sealed up too. New plug wires. Cap and rotor are not new, but look like new.
A buddy suspects the little timing advance thing in the distributor, that is the next thing I am going to check.
Any ideas?? A motor only needs so many things to run :smt101
A buddy suspects the little timing advance thing in the distributor, that is the next thing I am going to check.
Any ideas?? A motor only needs so many things to run :smt101