Why is my car building up back pressure

Asked by GuruX8GRW Nov 10, 2018 at 01:15 AM about the 2002 Oldsmobile Alero

Question type: Maintenance & Repair

I have an Oldsmobile Alero
2002 that have been having
overheating problems well I
know that it had a blown
head gasket I took some
bars leak fixing repair seal
head gasket and put in it
and then it just the way it
said to do it but it's building
up back pressure and
pushing water out the
Overflow why is that

3 Answers
159,355

Bob answered 6 years ago

Why is that? Because the head gasket is bad and needs to be replaced. The magic stuff in the bottle doesn't always work.

1 people found this helpful.
Mark helpful
65,590

firebird338 answered 6 years ago

Try bleeding air from system like this remove cap from overflow tank fill with antifreeze to full mark leave cap off and start vehicle and let idle you will notice level in tank start to rise this is normal once thermostat starts to open level in tank will drop add more antifreeze to full mark then put cap back on. If still pushing antifreeze out through overflow tank head gasket motor be replaced.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • Why is my car building up back pressure 3 Answers

    I have an Oldsmobile Alero 2002 that have been having overheating problems well I know that it had a blown head gasket I took some bars leak fixing repair seal head gasket and put in it and the...

    2002 Oldsmobile Alero

    -

    Maintenance & Repair

  • Why does my car have no pick up 1 Answer

    My 2001 alero has no pick up at all it does not want to pick up no speed it just puts in drive

    2001 Oldsmobile Alero GL

    -

    Maintenance & Repair

  • Why my car won't start 2 Answers

    I recently had my serpentine belt replaced because it had broke and I also replace the battery because it was weak but my car still will not start it just clicks like it's trying to turn over I do...

    2001 Oldsmobile Alero GX

    -

    Maintenance & Repair

  • Why car won't start 1 Answer

    I got a new starter and new battery when put both in went to start car and it jus clicked when turned the key. What do I need to get now for it to start?

    2003 Oldsmobile Alero

    -

    Maintenance & Repair

  • Car is knocking 5 Answers

    Car started knocking while I was driving. The more I hit the gas the more it knocked. Sounds like it's coming from the motor. ???

    2001 Oldsmobile Alero GL

    -

    Maintenance & Repair

Alero

Looking for a Used Alero in your area?

CarGurus has 2 nationwide Alero listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Oldsmobile Alero Questions

CarGurus Experts

  • #1
    TheStern75
    Reputation
    1,010
  • #2
    sun4shine2006
    Reputation
    720
  • #3
    Guru7Q4N
    Reputation
    590
View All

Find great deals from top-rated dealers

Search

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.