Seems to misfire and delay to throttle

2003 AUDI A4
160,000 MILES
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LEATHOL
  • MEMBER
  • 1 POST
When I push the throttle down the engine seems to have a delay and seems to under rev and revs up really slow almost like a limiter is in place . Some internal backfire. Very small , idle changes.
Mar 3, 2020 at 11:21 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

Several possibilities.

https://www.2carpros.com/articles/engine-has-low-power-output

1. Low fuel pressure.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

2. Clogged cat converter.

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

3. Timing.

https://www.2carpros.com/articles/how-a-timing-belt-works

Any recent work? 160,000, did you have the timing belt changed?

Do you have any codes stored? If so, can you post them?

Roy
Mar 4, 2020 at 12:18 AM
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