stikboyy
Cadet
- Joined
- May 3, 2012
- Messages
- 24
I have a 1984 Mercruiser 140 serial # 6712267
I was out the other day for a couple of hours and on my way back in the motor started to run rough and was low on power. When i got back home i checked the timing and it was at 4 degrees ATDC. I reset the timing to the factory spec of 6 degrees BTDC and took the boat back out. The motor ran perfect for 2 hours and then experienced the same symptoms. I once again checked the timing and it was at 6 degrees ATDC. I am absolutely certain the distributor bolt was tightened down properly. I pulled the distributor to inspect the gears and the distributor gear and the cam gear look good. #1 cylinder piston is at TDC when the timing mark on the balancer is lined up the 0.
Any ideas on what could be causing my timing to change?
I was out the other day for a couple of hours and on my way back in the motor started to run rough and was low on power. When i got back home i checked the timing and it was at 4 degrees ATDC. I reset the timing to the factory spec of 6 degrees BTDC and took the boat back out. The motor ran perfect for 2 hours and then experienced the same symptoms. I once again checked the timing and it was at 6 degrees ATDC. I am absolutely certain the distributor bolt was tightened down properly. I pulled the distributor to inspect the gears and the distributor gear and the cam gear look good. #1 cylinder piston is at TDC when the timing mark on the balancer is lined up the 0.
Any ideas on what could be causing my timing to change?