anyone using a 7G in cool weather, mine will not heat up to 180, stays around 150deg or less replaced and checked thermostat in hot water working fine. engine not up to temp makes it use more fuel and actually runs down exhaust pipe not burning all the fuel. hot weather above 70 dry exhaust and very little smoke. maybe a bypass somewhere im missing??? thanks
check it with a heat gun maybe your thermostat is stuck open
Do you use a winter fan