Question about 1997 GMC Sierra

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When accelerating, primarily in lower speeds, hesitation occurs...could also describe it as sputtering. My guess is either fuel filter or need to replace spark plugs. Thank you.

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I would check fuelpump pressure as I have encountered same symptoms as you desscribed in your complaint.aaaaaaaaaaaaaaAlso check for vacuum leaks while your at it

Posted on May 23, 2011

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You need to change both of them for better performance..

Posted on May 23, 2011

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When accelerating there is no power but when releasing accelerator slowly power picks up. why is this happening 2001 ml270 cdi


Hi, this is a common symptom of a clogged fuel filter that is straining the fuel pump itself.

When you accelerate, this initiates a rapid fuel flow through the lines. if the filter cant pass the proper amount, its will stall or hesitate the engine and cause sputtering or loss of power. due to this clogged filter, the pump cant keep up with your acceleration demands at this time. the reason for the power pick up upon De acceleration, is because the lower amount of fuel is able to pass through quite easily but, as soon as you demand more power, the clog will obstruct the more intense flow of fuel to the injectors.

Simply replacing the fuel filter and pump will fix this issue.

Please rate and god bless:)

Apr 17, 2009 | 1998 Mercedes-Benz C-Class

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