over heating

10

Asked by Feb 07, 2014 at 08:56 PM about the 2000 Chevrolet Cavalier Base

Question type: Maintenance & Repair

2000 CAVALIER 2.2 OHV so let me confirm #1 180psi    #2 140    #3 155   #4 180psi on dry comp test.  on wet test numbers were about 200psi across the board?  Originally the car overheated.  i changed thermo, rad, water pump, and belt.  still overheated.  i was told i may not have bled out all the air.  not sure if i did it right.  how is that done?  i smelled exhaust fumes in over flow tank.  I ran car cold for 2 minutes, shut it off and pulled off rad cap and there was alot of pressure.  i ran car with no thermo and it did not even come up to temp, put it back in and still overheated.  fan works, heat works, no sweet smell in exhaust, no oil in coolant, no coolant in oil.  i do hear a hissing coming from the overflow hose in coolant res.   i just noticed a freeze out plug is leaking coolant, and the first exhaust manifold gasket is bad i see smoke coming out.  Is it possible the head gasket is blown?  is that why #2 and #3 cylinders psi is lower than #1 and #4.  Also with the wet test are those numbers ok.  I am at a loss.  my father keeps asking why i am wasting my time, energy and money. and the truth is i love my little car, and when i start something i must finish it.  i refuse to pay someone to anything if i can do it myself.  i am a top notch carpenter, not an auto mech,  but i am mechanically inclined and love to read.  i learned everything i know by reading.   I just need to know for sure if it is the head gasket...  Last night i pulled the exhaust manifold off cause i broke a bolt trying to put a new gasket.  Should i fix the freeze plug and exhaust gasket, put it all back together, or go a little further and do the gasket if that is what it is.......THANK YOU SO MUCH     JOE

2 Answers

101,415

Could be head gasket causing the lower numbers. Hard to check since you have a freeze plug leaking. Normally would say to do a pressure test on cooling system with spark plugs out. If pressure starts to drop and coolant shows up in spark plug holes then it's a blown head gasket. Might try using a temp rubber freeze plug to seal that leak then do the pressure test on cooling system. Your compression numbers look with in range but don't like it if any are more than 5 psi different than the others and you have two that way.

2 out of 2 people think this is helpful.
56,655

To test the cooling system for a blown head gasket. Pressurize the cooling system (cold) with a cooling system pressure tester. Then start the engine. If the needle on the pressure tester gauge bounces the head gasket is blown. Pull the oil dipstick. Is there white milky "goop" on the dipstick? If so, that's another good indicator of a blown head gasket. The fact that the compression readings improved so much with a wet compression test tells me the piston rings are worn. It might be time and, in the long run, more cost effective for an engine rebuild or engine replacement. HTH. -Jim

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Over heating 4 answers

    I have a coolant leak but it looks like its coming from the belt tensioner in my 1998 Chevy cavalier is this a sign of a cracked head

    1998 Chevrolet Cavalier Base Coupe

    -

    Maintenance & Repair

  • Car heat 3 answers

    My car will start up fine but after 15 or 20 min or when car heats up and shuts down let it cool for a bit it will start then shut down again

    1998 Chevrolet Cavalier Base

    -

    Maintenance & Repair

  • No heat 3 answers

    I have 1998 chevy cavilier and changed the theromstat and water pump and i still have no heat the bottom hoses no water coming out or is it getting hot

    1998 Chevrolet Cavalier

    -

    Maintenance & Repair

  • no heat one hose hot one cold 4 answers

    no heat 1 hose hot 1 cold

    1997 Chevrolet Cavalier

    -

    Maintenance & Repair

  • Over heating

    1996 Chevrolet Cavalier

    -

    General

Search Chevrolet Cavalier Questions

Chevrolet Cavalier Experts

#1 John Saffrahn
John Saffrahn
Reputation 2,700
#2 dandyoun
dandyoun
Reputation 1,240
#3 mbar1
mbar1
Reputation 1,060
View All

Related Models For Sale

Used Ford Focus
1,253 Great Deals out of 58,948 listings starting at $1,395
Used Honda Accord
1,203 Great Deals out of 78,037 listings starting at $969
Used Honda Civic
1,143 Great Deals out of 65,143 listings starting at $1,195
Used Chevrolet Malibu
1,118 Great Deals out of 79,188 listings starting at $2,495
Used Toyota Camry
1,482 Great Deals out of 100,777 listings starting at $700
Used Nissan Altima
1,128 Great Deals out of 85,769 listings starting at $695
Used Chevrolet S-10
10 Great Deals out of 1,626 listings starting at $2,450
Used Toyota Corolla
1,338 Great Deals out of 68,322 listings starting at $1,399
Used Chevrolet Camaro
660 Great Deals out of 39,303 listings starting at $2,995
Used Chevrolet Impala
917 Great Deals out of 36,377 listings starting at $1,800
Used Honda Civic Coupe
331 Great Deals out of 17,032 listings starting at $900
Used Pontiac Sunfire
466 listings starting at $1,700
Used Honda Odyssey
482 Great Deals out of 27,733 listings starting at $1,900