Freshly Restored
Posts: 211
Joined: Thu May 10, 2018 7:15 am
SD220 Timing Help Needed
What is the initial timing these engines generally like?
Whether the end of the vacuum line at carb is connected or pulled off and plugged it always reads the same. Seems like there may be an issue here?
It wants to run best at a reading of 24 advance. This obviously seems way too high. If I back it down to 18ish, it wants to backfire A LOT when I drive it down the road. 18-20 it backfires rarely. Over that and it doesn't backfire at all.
Possibly there's something wrong with the distributor vacuum and initial timing is actually lower than 24?
When I rev it timing does go up.
Guidance please.