ASE Question Of the Month 
Sponsored By
Federated Auto Parts
Which is correct?

You’re correct if you answered D!

Answer D is only partly correct. Whenever replacing a compressor, whether it’s for a catastrophic failure or just died of old age, it is imperative that the debris in the system be removed to prevent premature failure of the new one. Flushing is one way to do that BUT - most modern heat exchangers cannot be flushed because of their multiple flow path design. Additionally, lines with inline filters or mufflers cannot be flushed. Any component that can't be flushed, should be replaced along with the old compressor. And don't forget the drier or accumulator!

Now that you’ve tried the question, be sure to click the link below and enter our random drawing for a collectible diecast, provided and sponsored by Federated Auto Parts!

Enter the monthly contest from Federated Auto Parts by clicking here.

Our training guides are the only guides offered with a money back if you don't pass, guarantee.
To prepare for the ASE certification exams, visit

For test registration and location information, visit the home of ASE at

You can learn more by joining our online community at

To stay current with everything that Motor Age has to offer, including tech tips and upcoming webinars, subscribe to the newsletter at