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2004 Hyundai Accent Rough Idle

Tiny
KTYGRETT
  • MEMBER
  • 2004 HYUNDAI ACCENT
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 71,000 MILES
Just installed new plugs, wires, pcv, FJ clean and still have a rough idle problem when I come to a stop. When I release the brake the rough subsides. What's the ans please thank you.
Wednesday, November 18th, 2009 AT 1:50 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi ktygrett,

Thank you for the donation.

If the engine is surging when the brake pedal is depressed, the cause is a leaking vacumn from the brake booster. Check the master cylinder to booster sealing/O ring for leakages.
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Thursday, November 19th, 2009 AT 7:02 AM

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