Only if you are on the compression stroke on the number 1 cylinder, if you go strictly by the mark you have a 50/50 chance of being correct as you might be 180 degrees off otherwise

__________________
Jerry

2004 SL500 Black 55K Miles
2002 s500 Black 90K Miles
1986 300E Gold 233K Miles
1966 Twin Cessna 320D
1989 Jeep Cherokee 233K Miles
1994 Ford Van E150 399K Miles