Ktmhiflyer
New member
Hello all,
I am on here to get a little more information pertaining to my dads boat. I am mechanically inclined, I work for chrysler as a field support rep so I know my mechanics. The trouble I am having is that I am unfamiliar with marine engines and where to obtain the information. It shows a 140 on the valve cover, I cannot find any serial numbers to indicate if the boat is a 2.5 or 3.0. The motor has been replaced so I am hoping we have the correct motor and the valve cover is not swapped. The title shows a 140hp motor which to me indicates*the motor is the 3.0L. *Any help is greatly appreciated!
To start the boat is running it just seems to have a rough idle sometimes stalling out. It can be very stubborn and the low rough idle will allow the boat to stall when going into gear. Once the boat takes off it will run fine, occasionally it will start to mis and run like crap. The carb has been rebuilt with a new carb kit. We replaced the fuel filter attempted to install a electric fuel pump which*ended up being a waste of time due to the pump over heating! The original mechanical fuel pump is on the boat again and it starts and runs but as stated before I need to figure out if I need to tune the carb or simply replace it. My dad wants to go holley I think it may be a bad idea seems Rochester carbs are not bad. I have verified that we*are getting fuel to the carb, we have replaced cap, rotor, plugs, wires.*The other piece to the puzzle is the PCV hose that links the*valve cover to the carb.*At this time is simply a rubber hose that is hose clamped to the*cover and then attached to the carb. There is no PCV valve or internal piece on this. Is there suppose to be a PCV type valve or something to eliminate the oil from blowing into the carb at wide open throttle? I am not sure if the way this is set up is affecting the operation or not. I appreciate any input. Thanks
I am on here to get a little more information pertaining to my dads boat. I am mechanically inclined, I work for chrysler as a field support rep so I know my mechanics. The trouble I am having is that I am unfamiliar with marine engines and where to obtain the information. It shows a 140 on the valve cover, I cannot find any serial numbers to indicate if the boat is a 2.5 or 3.0. The motor has been replaced so I am hoping we have the correct motor and the valve cover is not swapped. The title shows a 140hp motor which to me indicates*the motor is the 3.0L. *Any help is greatly appreciated!
To start the boat is running it just seems to have a rough idle sometimes stalling out. It can be very stubborn and the low rough idle will allow the boat to stall when going into gear. Once the boat takes off it will run fine, occasionally it will start to mis and run like crap. The carb has been rebuilt with a new carb kit. We replaced the fuel filter attempted to install a electric fuel pump which*ended up being a waste of time due to the pump over heating! The original mechanical fuel pump is on the boat again and it starts and runs but as stated before I need to figure out if I need to tune the carb or simply replace it. My dad wants to go holley I think it may be a bad idea seems Rochester carbs are not bad. I have verified that we*are getting fuel to the carb, we have replaced cap, rotor, plugs, wires.*The other piece to the puzzle is the PCV hose that links the*valve cover to the carb.*At this time is simply a rubber hose that is hose clamped to the*cover and then attached to the carb. There is no PCV valve or internal piece on this. Is there suppose to be a PCV type valve or something to eliminate the oil from blowing into the carb at wide open throttle? I am not sure if the way this is set up is affecting the operation or not. I appreciate any input. Thanks