Thread: Polo 1.9D-MOT PASSED 02/07/2015 costs updated
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Old 12-17-2014, 08:55 AM   #33 (permalink)
Rembrant
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Quote:
Originally Posted by 320touring View Post
This Polo continues to annoy- Tried to solve the mystery pulsing under load:Open to all suggestions!
https://fuguttycars.wordpress.com/20...he-polo-pulse/
Injector pump case pressure? Do these older pumps have case pressure valves? Maybe the case pressure is fluctuating and causing the timing to jump around?

How many RPM is this fluctuation?

Vacuum leak somewhere...

My VW TDI is only an 03, but with 200k miles on it...every vacuum line on the car had to be replaced...all rotted.
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