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Thomas Altmeyer
 
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Default 1978 mercury 402 problem

Hi,

the problem is, the motor won't start with throttle in idle
position with or without choke engaged.
If i move the lever further, the motor starts without problems
but logically with higher RPM.
Now i slowly pull the lever back down to idle position
and the motor stops.
I've checked the static timing settings (lever positions around carb),
static spark advance lever position and all seems ok.
I've checked too the dynamic timing with a strobe lamp and
it seem's ok too.
I've changed the diaphragma in the fuel pump and the carb needle valve,
but without success.
Then i've carefully and thorouhgly cleaned the carb, but without success
too :-(
Any thoughts????

Regards
Thomas Altmeyer


Germany