JLO/Rockwell Engines

[hydromike]

I need to know if the plug for the wires is needed for case pressure to build.

No, all of the electronics are outboard of the magneto-side crank seal.

[Joe H]

There is no case pressure, only a pulse that is created by the piston going up and down this is what makes the fuel pump work. If there is no pulse or a weak pulse at the line coming off the crank case you either have a bad crank seal, low compression or maybe the drain plug on the bottom of the crankcase is loose or missing.

[2015tigerproject]

Having a HARD time finding the correct PRIMARY Ignition Coil for a JLO Rockwell L252R. What little info I dig up is not readable Help.... Don't want to buy any more parts form individual's that don't know the difference between a lighting coil and a primary Ignition coil

[ARGOJIM]

Pm member Don, he should have an R manual.