Coolent bubbling

[kevan.gibson.9]

I'm new here leaning how to work this lol any way I have a 1994 chevy siverado 5.7 221000 mils truck runs a little rough at idle not bad lots of power but when I'm driving my heater gets realy realy hot almost as soon as I start the truck ok so when I shut it off I can here the over flow tank bubbling This is my 3 t stat and it has new rad plz help I'm stuck .


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[great white]

Potentially a head gasket from your description.

Do you get a lot of "white smoke" out of the tailpipe and do you have to add coolant on a somewhat regular basis?

 

[kevan.gibson.9]

Yea like 1 a month and it's cold here so it's always got smoke but when it's hot out it don't smoke at all and no coolent in my oil or oil in my overflow


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[great white]

Yea like 1 a month and it's cold here so it's always got smoke but when it's hot out it don't smoke at all and no coolent in my oil or oil in my overflow


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If your adding coolant monthly and there's none on the ground your head gaskets just moved up the probability scale to the "likely" category.

What a "1"? 1 liter, 1 quart, 1 gallon, etc?

A coolant system pressure test is in order.....

 

[kevan.gibson.9]

That sucks so if I do that test how am I ganna tell from just standing there looking


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[great white]

That sucks so if I do that test how am I ganna tell from just standing there looking


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Its a hand pump tester that goes I place of the rad cap.

You pump it up to 10-15 psi and if it bleeds off then the cooling system is open.

I pull spark plugs and I can often hear it "ssssss-ing" in the affected cylinder. This often saves me from pulling both heads, bit i usually do anyways since its just another set of head bolts to put a fresh gasket in.

If its bad, you may even get a squirt of mist when turning the engine over with the plugs out.

If the cooling system holds pressure, you can breath a sigh of relief as the head gaskets are good....

Overheating or rapid gaug climb is also a sign of a bad head gasket. If your upper rad hose goes hard within a few moments after start that is another indication of head gasket...

 

[kevan.gibson.9]

Ok cool thank u very much I will cheak that got 1 more ? Not about that I've had 6 mechanics look and can't find my problem ok so my truck like hopes or Shacks can't realy tell but only happinds beteween 35 and 40 miles a hour have the carrier barring replaced all tires and rims new shocks new gearbox idler and pitman arm said my front end look goo no bad parts new hub and roters on both side any ideas ?


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[great white]

Ok cool thank u very much I will cheak that got 1 more ? Not about that I've had 6 mechanics look and can't find my problem ok so my truck like hopes or Shacks can't realy tell but only happinds beteween 35 and 40 miles a hour have the carrier barring replaced all tires and rims new shocks new gearbox idler and pitman arm said my front end look goo no bad parts new hub and roters on both side any ideas ?


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I'm sorry, I didn't understand that...

 

[kevan.gibson.9]

When I drive down the road my truck shakes or it's bouncing I'm not realy shore and 6 people with years experience do not have a clue on what's wrong only does it at 35 to 40 mph. Hope that helps sorry not a good speller lol


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[great white]

2wd or 4x4?

No worries on the spelling, but it has to be close enough to suss it out for me. "Hopes and shacks" threw me a bit...