Timing

Hefeweizen · Post by **Hefeweizen** » Fri Jan 19, 2018 12:21 pm

So I wanted to adjust the timing on my 1980 633CSi (M90 Engine) and found that the heater hoses are covering the little window. Anyone have a trick on how to do this?

Mike W. · Post by **Mike W.** » Fri Jan 19, 2018 1:14 pm

It's a bit of a pain, but just push them out of the way. You've kind of got to work the light in there.

Hefeweizen · Post by **Hefeweizen** » Tue Jan 23, 2018 12:04 pm

Thanks! That really seems like a PITA and I have not tried this yet. Has to get warmer first. Guess it also depends on the size of the timing gun?

Mike W. · Post by **Mike W.** » Tue Jan 23, 2018 12:43 pm

Yeah, or just time it by ear where it runs right. Not idles right, runs right. To me the timing procedure is start advancing it to where it just starts to idle well, then back off just a hair. Not max idle speed, but where it starts to run well. And drive it. You may or may not need additional advance at your altitude, seems like 1 degree per thou is the old rule of thumb.