coolant leak. in shop system holds 20 psi, and cant make it drip, no white smoke, Oil level holds... I fill up the rad 2" every few days and it leaks when it cools down...Sometimes

60

Asked by Jul 09, 2014 at 05:50 PM about the 1997 Buick Park Avenue 4 Dr Ultra Supercharged Sedan

Question type: Maintenance & Repair

I know it leaks coolant.

10 Answers

98,385

Have they tried pressurizing it with the engine running? I had a small block that would loose coolant but it would not drip, pressurized it and started the engine and bingo I found the leak at the water pump.

1 of 1 people found this helpful.
60

It was pressurized hot and cold, no leak and throughout the system the shop says there are not even any stains for coolant leaking down something

1 of 1 people found this helpful.
60

The system does have gunk in it from its previous owner who put in coolant leak stop, and its caked on in a lot of different places And the top hose does collapse when the system is cold

98,385

Stop leak is not a good sign, problem could be in the intake manifold seals, cracked head outside of the combustion chambers, cracked block, casing flaw in the block, not going to be an easy one to find.

60

A block test would confirm or deny this idea though?

98,385

A block test will confirm or deny the presence of compression gasses in the cooling system, but if the crack or leak is say in the head around a valve guide away from the gasses then it won't show, If the intake is seeping coolant into combustion chambers it won't pick that up either.

60

What are my options then...

98,385

The first thing to do is get the crud out of the cooling system, and it's not going to be easy, it maybe masking the real problem. Or just start tearing it down and checking everything as you go.

8,510

Tauruses can leak at the heater and during certain conditions, spray coolant in a fine mist hardly detectable. Leaving the pressure tester attached for a day and overnight has proven these cars to leak in this manner at dealers when they are still covered by warranty. I would point out that timing covers can leak at the lower corner, waterpunps can be tempermental, and 10 tiny leaks add up to one big one. The heater hose ones require being pressurized just below the specified value on the cap. do not exceed the cap's value. give it time, and check and pump up the tester every few hours or more often as necessary. The eventual result can sometimes be from the floorboard under the car, but not in the interior. The engine issues take grat patience to find as well, too bad someone has already become impatient and tried to cover up the cause with stop leak. You could raise the front of the vehicle and fill and burp it, then add it's needed amount to the recovery tank and monitor for a week or so, adding only to the recovery tank. adding a dye to the liquid can speed up the findings upon inspection at a shop with the proper light.

8,510

A park avenue has all the same kinds of issues and the parts are quite the same.as to how they fit and respond to their environment. using stop leak of another type can also change the circumstances for the method of Stopping several very small leaks. When I worked for GM, we had some cars with hose attachment leaks. The ones that sucked the upper hose flat were low on coolant. they just had not been lifted when they were filled. Using another brand of stop leak helped because the service manager figured out chemically, what would save time, because the customer had limited funds. Read the labels on what's available to you. pepper works, bars leak works, and leave the solids out on that type. then flush and clean the parts after it has had time to help you. You can invest more time in it when the weather cooperates if you are lacking patience now.

Your Answer

Park Avenue

Looking for a Used Park Avenue in your area?

CarGurus has 432 nationwide Park Avenue listings starting at $1,800.

ZIP:

Buick Park Avenue Experts

  • #1
    Jking1838
    Reputation
    1,080
  • #2
    Tom Demyan
    Reputation
    760
  • #3
    jateen29
    Reputation
    750
View All

Related Models For Sale

Used Buick LeSabre
24 Great Deals out of 1,873 listings starting at $1,588
Used Chevrolet Impala
591 Great Deals out of 34,660 listings starting at $1,000
Used Buick Regal
177 Great Deals out of 9,915 listings starting at $3,500
Used Cadillac DeVille
1,666 listings starting at $1,995
Used Buick Century
807 listings starting at $1,999
Used Lincoln Town Car
37 Great Deals out of 1,776 listings starting at $1,495
Used Mercury Grand Marquis
31 Great Deals out of 1,745 listings starting at $1,700
Used Toyota Camry
1,081 Great Deals out of 72,629 listings starting at $990
Used Honda Accord
1,023 Great Deals out of 62,741 listings starting at $999

Used Cars For Sale

2003 Buick Park Avenue For Sale
61 listings starting at $1,800

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.