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last year did the impellers as a routine maintenance and also the thermostats-i looked at the poppet valves and cleaned out some debris in the chamber but did not replace. feeling like i should have i got new valves and when i got them i noticed they are different from the old with a rounded head-does X end (not the rounded one) insert into the spring so the water pressure pushes up on the rounded head? I think the answer is yes and i am kicking myself for now not doing this when i had it opened up as it was a pain in the ankle to get back together
Question two: performance on the engines is very good and has been at ***** sometimes one of the engines seems to idle a bit rough not very and to most its not really noticeable-i think i am just used to hearing them anyway i have been religious in using 89 octane, ring free yamalube and change the water seps and 10 microns-plugs are done frquently as well-
someone mentioned a back pressure valve/ is that the same as the VST screen and could either or both be soemthing to look at as the cause of this problem?
any help is really appreciated..flan
Question two: performance on the engines is very good and has been at ***** sometimes one of the engines seems to idle a bit rough not very and to most its not really noticeable-i think i am just used to hearing them anyway i have been religious in using 89 octane, ring free yamalube and change the water seps and 10 microns-plugs are done frquently as well-
someone mentioned a back pressure valve/ is that the same as the VST screen and could either or both be soemthing to look at as the cause of this problem?
any help is really appreciated..flan
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