Good night, im having a problem since last season, my boat works great( 5.0 GI PEFS TBI ), but when im in plane for around 5 minutes straight ( 3.200rpm ) it bogges down and back fires on the port engine, sounds like cutting ignition, the tach drops to 1.5krpm and comes back with the back fires...
Just to close the topic, got all the TBI cleaned and the injectors cleaned on the ultrasom machine for 2 hours, installed back and the boat is running good! Thanks for everyone help
Found it guys, it is on the TBI, but not sure exactly what is, i will do a completely tune up and injector cleaning.
Swapped tbi between engines and the problem went to the other engine, so we found where it is. One advantage by having 2 engines.
Do you guys think i should buy new injectors...
I've read a lot of topics with the same problem and had tried much of the solutions proposed on them, but my problem doesnt seem to be solved.
I have a 2000 chris craft with a twin 5.0 volvo penta GI ( throttle body injectors). The starboard engine runs good, but the port side engine doesnt...
