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What are the possible causes c15 acert to give very

Hello sir What are the...
Hello sir What are the possible causes for cat c15 acert to give very excessive white smoke ( no coolant loose) Idealing is ok but as u give throttle white smoke increase and rpm goes up very slow with missing
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Answered in 3 minutes by:
8/23/2015
Technician: Cat Man, Cat Engine Expert replied 7 years ago
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
Verified
Thanks for asking your question and requesting me. I will try and help you out.
Most often the cause of this is a faulty injector. I have seen this many times.
It could also be caused by an intake or exhaust valve problem. If one of these are not sealing correctly. It will cause white smoke and a miss.
Please reply back if you need more help or have more questions. I am happy to assist.
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Customer reply replied 7 years ago
if it is the valve problem it will need new head or just adjustment
Technician: Cat Man, Cat Engine Expert replied 7 years ago
Unfortunately if it is a valve problem. The head would need to come off and be repaired or replaced. I hope it's just an injector.
Please reply back if you need more help or have more questions. I am happy to assist.
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Technician: Cat Man, Cat Engine Expert replied 7 years ago
One more thing. If this is a twin turbo acert C15, you could also have a faulty intake valve actuator on top of the engine. Sometimes when they fail. They can hold open the intake valve and cause smoke and a miss.
Please reply back if you need more help or have more questions. I am happy to assist.
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Customer reply replied 7 years ago
Will the actuator throw a code
Technician: Cat Man, Cat Engine Expert replied 7 years ago
No not always.
When it sticks and holds open a valve it will not set a code. If there is a leak or solenoid problem it will.
Please reply back if you need more help or have more questions. I am happy to assist.
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Customer reply replied 7 years ago
Another thing I noticed is when we turn it off
Right after the time if we start it
It will crank but will not start and as soon as I put some quick start it fire up
What is it out of timing??
Technician: Cat Man, Cat Engine Expert replied 7 years ago
Thanks for the information
No I would not suspect a timing issue. But a low fuel pressure issue. If it's an injector that's leaking and causing smoke. It could cause hard starting
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Customer reply replied 7 years ago
Could it like do that it doesn't start right away we turn it off
Technician: Cat Man, Cat Engine Expert replied 7 years ago
it can.
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Customer reply replied 7 years ago
will cylinder cut out help to diagnose it
Technician: Cat Man, Cat Engine Expert replied 7 years ago
Oh yes. A cutout test will identify which cylinder has the problem.
Please reply back if you need more help or have more questions. I am happy to assist.
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
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