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    Penta 5.7 gi serging only when warm engine at normal operating temp

    Hi I have priviouse posts of this subject , this engine serge's only when warm or I think when thermostat opens , and only above 2000rpm port side injector cuts out but Not long enough to log a code on ECM , ok I've put new manifold risers , new low and high pressure fuel pumps , clean fuel and...
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    5.7 gi serge problem help please

    Hi I have a 1994 Volvo Penta 5.7 gi . It runs fine till it gets warm at normal ops rating temprature then it serg from 2000rmp to 3500rpm if it cools down its perfect until I run it again , the engines have done 250 hours there are 2 side by side so I've swaped every part from one to other...
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