Mercury 25XD help

SW Clements

Recruit
Joined
Nov 18, 2011
Messages
2
1984 25XD toatlly refurbished. Runs beautifully, with one odd exception. After engine has been run and has sat for a while and restarted, it acts as if it is only running on one cylinder and will die when throttled. Upon restart, which it does flawlessly, If one is careful to increase throttle in a rapid fashion, it will sort of "pop" and go into full running mode. Carb has been rebuilt, new plug, wires and coils. Timing is set, etc. Premium, fresh fuel is being used and engine shows no signs of fuel problems. I'm stumped as to this intermittent problem.
 

water world

Petty Officer 3rd Class
Joined
Dec 9, 2011
Messages
81
Re: Mercury 25XD help

check for spark at both spark plugs. when hot. switch box could be failing because of heat. hows the water pump? remove swithbox and see if it is melted on block side.
 
Top