Reply To: Compression

[Don]

Well, if the coils are severely cracked, they can’t be producing great spark under load for sure. So, the ignition needs servicing , and it won’t hurt to do that before going after the intake. But. you did mention that the engine runs briefly when the cylinders are directly primed with fuel….So, some spark is being produced, seems like too much of a coincidence that spark issues are keeping the engine from running off the carburetor…. Order both the intake gaskets so you will have them if and when you must remove the intake….