bigbill109
Recruit
- Joined
- Apr 27, 2008
- Messages
- 4
I have a 1988 4.3 Mercuiser 175 hp. The problem is the engine keeps dying at idle. The timing is set @ 8 degrees bct. The book states it should be set at 800 rpm. When coming out of nuetral the rpm will drop before engaging the prop to about 700 rpm. Then as soon as the prop engages the engine dies. Vacumn gauge has been hooked up, the vacumn is about 15 in. at 800 rpm and drops to about 13 when idle drops. Cannot raise the vacumn with air fuel mixture screw. Replace plugs, wire, cap, rotator, rebuilt carb. and replaced the distributor with a 1989 distributor. Any help with this problem will be appreciated.