1999 Crownline Mercruiser Problem

Joined
Apr 27, 2010
Messages
15
Posted this originally in the wrong section. 5.7 MPI fuel injected. Runs perfect for 10 to 15 mins and then starts backfiring through the throttle body. I can slow down and sometimes it goes away. At other times, pop, pop, pop, more gas I give it the more it pops. Also, it is running rich as the chrome exhaust are covered with black soot at the end of the day. Wonder if it could be the ignition module? Taking it to see if any codes can be read. Thanks for your help.
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: 1999 Crownline Mercruiser Problem

Going to take a Merc serial number. Year is just a close estimate.
 
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