Hi all .Purchased my 2001 270DA...
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05-09-2021 01:50 AM
Hi all .
Purchased my 2001 270DA about 30 nmiles from where I am keeping it in marina. It developed a miss about 20 mins in to the trip home in open water, the seas were very calm and it was a great run up the coast. Since then the 7.4 litre merc cruiser has still not fired correctly and get very hot . What can be wrong with it . I have to take it to have the transom assembly replaced later this month but not sure it will make it is there anything I can check ? .
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05-09-2021 07:11 AM
Here is a partial list:
Rotor (Inspect tip and for tracks away from tip)
Distributor Cap (Inspect electric connections and for cracks)
Timing (Check / set per FSM)
Spark Plug Condition (Insulator Visual to Indicate Burn, Ceramic Cracks)
Spark Plug Gap
Measure spark plug wire resistance
Compression
Fuel Pressure (Multiple / All Test Conditions)
Send Injectors for Testing / Cleaning
Engine Fault Codes
All Vacuum Hoses Clean / Clear (Mine are Cleaned Annually)
Flame Arrestor Clean (Mine is Cleaned Annually)
New Fuel Filter(s) (Mine is Replaced Annually)
Remove / Inspect / Clean / Replace Intake Plenum (Mine is Cleaned Annually)
The excess heat can be a number of things, like bad impeller or failing exhaust.
Try unbolting the exhaust elbow from the riser to permit a visual inspection of the internal raw water passages and to permit an inspection of the SOLID wall thickness between raw water and exhaust gas passages. A replacement gasket is required for reassembly.
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05-09-2021 10:49 PM
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05-16-2021 08:40 AM
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