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I have a Mack 2003 cv 713 with a 427 engine. I've noticed a…

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I have a Mack 2003...
I have a Mack 2003 cv 713 with a 427 engine . I've noticed a decline in my power when I'm taking off from a dead standstill or climbing a hill or bridge it worst when I'm loaded! When it comes to top end I can easily get 70 to 75 mph , but it take longer thren it use to in order to reach those speeds! I'm truck has a new remack engine that is around 2 years old . With under 150,000 miles ! Any suggestions on what could be causing my Loss of low-end power?
Submitted: 11 months ago.Category: Medium and Heavy Trucks
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Answered in 4 hours by:
9/11/2017
Technician: Pete, Automotive Mechanic replied 11 months ago
Pete
Pete, Automotive Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 33,359
Experience: Performed various automotive repairs on several light duty and medium duty vehicles over 15 years of service.
Verified

Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.

I would first have the fuel filter changed.It can be plugged causing this issue here and is usually most common for a fault like this.I would also have the engine air filter checked for being restricted at all needing replaced.If this is all o.k. have the exhaust tested for excessive back pressure with a restricted exhaust component needing replaced.One of these will usually be the fault here.This will have to be checked into further to pinpoint and repair this fault.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service,your 5 star rating is appreciated ( should be a link to click on here or above).You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.

Thanks Pete

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Category: Medium and Heavy Trucks
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Experience: Performed various automotive repairs on several light duty and medium duty vehicles over 15 years of service.

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