1979 merc 175hp no power stalls out

W

weir001

Recruit
Joined
Jul 9, 2010
Messages
3
went to go out in the bat the oter day...boat started left the dock ...motor was missing and had no power....changed plugs repair wires new fuel filter.... motor ran fine on the muffs in the drive way..believed i have fixed it ,but was wrong took it out and had the same problem ...it started fine but the miss was there then itf went away.Left the dock ....motor had no power then stalled and died....didn't want to start ...had to choke it to get it going...so im thinging maybe i have a fuel problem? Funny thing is i get it home put it on the muff and the dam thing starts and seeme to run fine?
Any ideas guys?
:confused:
 
C

Coloradolakeboy

Petty Officer 2nd Class
Joined
Jun 21, 2010
Messages
197
Re: 1979 merc 175hp no power stalls out

Here's a good article on testing the fuel system. It is in the FAQ section on this site.
http://forums.iboats.com/showthread.php?t=283363


You should also check the spark with a 7/16" spark gap tester available at auto parts stores. A strong spark is needed when the engine is put under load in the water. Do a search of this site and you will find the procedure.
 
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