backfire issues

skyscraper88

Member
Apr 7, 2012
72
Iowa, mississippi river
Boat Info
1988 270da
Engines
Twin 4.3L4 205hp
Port engine backfire

It is truly a sad day. The TaTa's have been offically put to bed for the winter.:smt089 As I went to over to pick her up, the mechanic told me that the port engine has a misfire in it. He rambled thru a few different senieros about what could be going on. Everything from bad plugs/wires all the way to bad valves to water bypassing the risers. It has backfired a few times while trying to get up on plane, but once the RPM's come up she runs just fine. Does anyone have any suggestions on what it might be? would a backfire be caused by a bad riser, of bad valve seat? timing seems to be right where is should be. planned on replacing the plugs and wires next spring. Are there any tell tale signs on what to look for if the riser might be bad?? :smt100​
Is this Heaven? No, it's Iowa.
:smt024


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