1971 Lemans coolant boiling

Asked by Nov 04, 2016 at 07:13 PM about the 1971 Pontiac Le Mans

Question type: Maintenance & Repair

1971 Pontiac Lemans. Original 350, fresh build,
coolant in radiator is boiling.

3 Answers

242,255

Check the thermostat, might be stuck closed.

1 of 1 people found this helpful.
65,745

Make sure you have 50/50 coolant and water. Plain water boils at a much lower temperature. If this and Tom's advice does not work then check compression to make sure you don't have a leaking head gasket.

1 of 1 people found this helpful.
67,465

Also check your ignition timing. If it's retarded (late) it will cause the engine to run hot and possibly boil over when shut off. HTH. - Jim

Your Answer

Add photo

Related Questions

  • 1971 Lemans coolant boiling 3 answers

    1971 Pontiac Lemans. Original 350, fresh build, coolant in radiator is boiling.

    1971 Pontiac Le Mans

    -

    Maintenance & Repair

  • 1971 pontiac lemans 350 possible engine modification 7 answers

    I own a 1971 Pontiac Lemans with a stock 350 engine/2 barrel carb. I would like to try to coax a little extra performance from the engine and was wondering if adding aluminum heads and new intake al...

    1971 Pontiac Le Mans

    -

    Maintenance & Repair

  • 1971 pontiac lemans automatic transmission shifting rough 4 answers

    Hello, I own a 1971 Pontiac Lemans 350 with auto transmission, the car has 85K and is in great shape and only used occasionally. As off late, when accelerating from a stop the transmission has not be...

    1971 Pontiac Le Mans

    -

    Maintenance & Repair

  • Headers for a 1965 Pontiac LeMans 3 answers

    I'm looking for a direct fit pair of headers for a 65 lemans that will not interfere with the Z bar for the clutch ! I can either fabricate the ones I have now or go to ram air lll exhaust manifolds ...

    1965 Pontiac Le Mans

    -

    Maintenance & Repair

  • 63 Lemans Windshield 2 answers

    Where can I buy a new Replacement Windshield for my 63 Tempest Lemans? Appreciate all help! Thanks, John

    1963 Pontiac Le Mans

    -

    Maintenance & Repair

Le Mans

Looking for a Used Le Mans in your area?

CarGurus has 14 nationwide Le Mans listings and the tools to find you a great deal.

ZIP:

Search Pontiac Le Mans Questions

Pontiac Le Mans Experts

#1 Rucko
Rucko
Reputation 440
#2 Js08016
Js08016
Reputation 190
#3 Daniel Perron
Daniel Perron
Reputation 160
View All

Related Models For Sale

Used Pontiac GTO
4 Great Deals out of 465 listings starting at $6,000
Used Pontiac Firebird
4 Great Deals out of 768 listings starting at $1,791
Used Chevrolet Corvette
149 Great Deals out of 20,684 listings starting at $3,995
Used Pontiac Grand Prix
30 Great Deals out of 2,863 listings starting at $1,600
Used Chevrolet Camaro
243 Great Deals out of 31,194 listings starting at $369
Used Chevrolet Monte Carlo
20 Great Deals out of 1,419 listings starting at $1,995
Used Oldsmobile Cutlass Supreme
128 listings starting at $1,995
Used Chevrolet Impala
591 Great Deals out of 34,068 listings starting at $899
Used Dodge Challenger
211 Great Deals out of 23,432 listings starting at $7,990
Used Ford Mustang
541 Great Deals out of 45,846 listings starting at $1,999
Used Chevrolet Nova
150 listings

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.