My 510 recently started to have some odd issues. A couple of weeks ago all was well, and was running the best it had been since I've had it. For reference it has an L20, dual webers, stock ignition.
On Monday I fired it up, and it was backfiring and popping alot. Made it a few blocks and drove it home it was backfiring so bad/loud.
Today it started fine but was really down on power, and anything more than 15% throttle a crackling sound was coming (it only used to crackle at WOT, foot to the floor). Drove it a couple miles to cars and coffee, and then on the way home, it started to smoke a bit (white-ish) then seemed to stop when I get home. Its had a pretty decent oil leak for awhile. Not leaking any coolant however.
I am thinking maybe a bad distributor/ignition? Should I upgrade it to a pertronix system, and if so what parts should I look in to?
Any ideas what may be wrong with it? It will be a few weeks till I can get it to my mechanic so hoping for some insights. Thanks!