as most of you know i have recently rebuilt my a12 engine its all up and running just have a few problems!

firstly in the owners manual it says the car should idle at 750rpm at 7 degres btdc on p my engine at the moment is at 1000rpm at idle in p if i try to got lower it starts shaking badly when put in drive!

also the engine idles okay at 1000rpm but why does the engine sort of go high and low at idle on the tacho it goes up and down like 50rpm??

thanks!

there 2 screws on the rocker cover side the one in the midle it idle a/f mix turn it all the waY in to it just touches and then 2 full turns out. thats base a/f mix then the throtle stop screw just touching try that.. same prob as mine my timing is way out but going good. get some one to rev it to 4300 and set timing with no vacuum line on set it to around 30=40deg btdc goes great idles meh so far that where mine is

hi thanks the idle air fuel mixture screw in the middle doesnt do anything i turn it all the way in when the engine is on and theres no difference fully in our out in engine revs or anything is this normal what could be wrong??

thanks!

when you set your initial timing, do you have your dizzy advance hooked? what about the point clearance, how wide do you set it?

when i set the timing the vacumm advance is hooked to the manifold as usual

the point are 48 degrees

does this sound right??

thanks!

unhook the dizzy advance when tuning. dwell should be 49 degree to 55 degree.

http://datsun1200.com/modules/mediawiki/index.php?title=Tune-up

so if i set the timing to 7 degrees btdc then plug the vacum wont it advance 7 to around 10 once pluged in?? i tried this before and it advances it!

thanks!