dont know exactly where timing is weather it advaned or retarted but i think its idle is to high but if try to retard the pump it smokes alot at cold start up and sounds when listening its got a slight miss when running but i push the pump to advance it the miss goes away and it doesnt smoke bu t i try to adjust the screw where the throttle rest against todrop idle as soon as i put load on motor it drops to where it smokes and runs crappy am i just stuck with this higher idle or am i missing somthing also it a1984 injection pump on a1990 1.6 td if that at all matters