I read that HotSpark is the way to go on these 6-cylinder distributors, but the last guy I know to try one was very disappointed in the HotSpark tech support.

For this reason, I personally think it is best that you start with a good working stock ignition system. It is nice to be able to eliminate the variables when troubleshooting. If nothing works, everything is a variable.

EDIT: oops! I forgot that this is a four cyl. I know nothing!!

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Past mb: '73 450sl, '81 280slc stick, '71 250, '72 250c, '70 250c, '79 280sl, '73 450sl, parted: '75 240d stick, '69 280s, '73 450slc, '72 450sl,