Few quick questions (22r):
In service manuals, basic timing is to be set to 0 degrees without vacuum advancer.
But, in truck user manuals (engine section, 22r) timing is set 5 btdc without vacuum advancer.
I noticed this in English user manual & Finnish user manual also (that came with truck).
So, is there systematic error on user manuals or was there change of value (maybe due pollution restriction) in 90s?
I also noted that carburetor had still orginal unmodified idle mixture screw, setting was a lot on lean side. When adjusted it properly, no more missfires and no more need for downshifts in 5th gear on hills
There is also screw above secondary metering rod but service manuals wont say anything on that (basic setting).
Screenshot from user manual:
In service manuals, basic timing is to be set to 0 degrees without vacuum advancer.
But, in truck user manuals (engine section, 22r) timing is set 5 btdc without vacuum advancer.
I noticed this in English user manual & Finnish user manual also (that came with truck).
So, is there systematic error on user manuals or was there change of value (maybe due pollution restriction) in 90s?
I also noted that carburetor had still orginal unmodified idle mixture screw, setting was a lot on lean side. When adjusted it properly, no more missfires and no more need for downshifts in 5th gear on hills
There is also screw above secondary metering rod but service manuals wont say anything on that (basic setting).Screenshot from user manual:
