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Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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I own twin Volvo tmd74p edc engines with 1400 hr. run

Customer Question

i own twin Volvo tmd74p edc engines with 1400 hr. run perfect start good no problems at all . it wont go more than 2000rpm which should get up to 2600rpm blowing black smoke has been fully serviced by me I am a 30 years mechanic had the tappets adjusted new water pump & air cooler & heat exchanger cleaned out it got no codes at all (clean diesel &filters )no air leak from inlet manifolds all wirings &connections perfect please help thanks name is Chris
Submitted: 9 months ago.
Category: Boat
Customer: replied 9 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Provide Diagrams, Manuals, or Instructions. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  K. Kergan replied 9 months ago.

Hi, my name is Kerry

Here is a link to parts diagrams.

Here is a link to a manual.

Black smoke is incompletely burned fuel, the engine is either getting too much fuel (leaking injectors) or not enough air (turbocharger problem).

Other possibilities are a clogged intercooler or low compression.

If the engine was fine before the servicing, you may have made the exhaust valves too tight.

If this was happening before the service, I would check the turbo.

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