Question about 1994 Chevrolet C1500

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1994 chevrolet silverado keeps overheating

I recently replaced both head gaskets and had the heads rebuilt and inspected due to the owner overheating engine on a cold morning. I changed the thermostat prior to startup (sring side toward block) and truck began to run hot again.I removed water pump and inspected impeller which appears fine. I also ran without thermostat and engine runs cold (about 80 degrees).I noticed the radiator was pretty gunked up inside could this be my problem. The thermostat will not open when engine temp reaches 180 degrees and upper hose is cold.I also tested thermostat in pan of hot water and it does open and close.

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You really need to get the Radiator Rodded and Dipped or replace it Entirely. This is your Overheating Problem. You do not have Enough coolant Flow to Cool the Motor at this Point. BlueDevilRay guy is a Total Idiot!

Posted on Jan 19, 2009

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Reffer to owners manual

Posted on Jan 19, 2009

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Why is there no compression in engine on my 1991 mitsubishi pajerno


This has to be because of a mechanical problem in the engine. Possible sources are the timing belt is broken (one indication is the starter spins the engine faster than normal, because the camshaft that opens and closes valves is not turning with the crankshaft), or the head gasket has failed (from overheating as the most likely cause), or badly worn piston rings and/or valves not sealing well (common on high mileage engines).
Compression is built up in the upper part of the cylinder where combustion occurs, so leaks or lost compression are due to valves not sealing, or head gasket that seals the cylinder head to the engine block-sometimes the aluminum cylinder head can warp due to overheating, and the head gasket no longer can maintain a seal. Or also the piston rings are worn so bad that compression will leak past them into the crankcase. For valves or head gasket, the cylinder head has to be removed and repaired. For the rings, the engine has to be rebuilt entirely.
First check if the timing belt is still intact.
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Apr 02, 2014 | 2002 Mitsubishi Galant

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Car overheating and mixing water with oil


You have blown the head gasket. Also, you may have warped the head if it's aluminum which will happen due to ignoring the issue of overheating...which eventually caused the "blown head gasket". So, it sounds like you have 2 issues to resolve. 1) Why was it tending to overheat? Stuck thermostat, water pump issue or??? 2) Repairing the cylinder head or replacing it if warped badly, if your lucky it's just a blown head gasket. Allowing a overheating vehicle to be in service without solving that the overheating can lead to MANY other expensive problems.

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Keeps Blowing head gaskets


You need to strip the engine down and check the top of the block (deck) for cracks and have it resurfaced, Do the same for the cylinder heads, check them for vcracks and have them resurfaced. Use felpro gaskets.

Apr 08, 2017 | 2003 Chevrolet Malibu

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How do i fix the low oil pressure issue im having. When i drive, the temp stays normal at 210 but when i idle, it goes up to 260. I was told the oil pressure is low and i needed a new engine


Your engine is overheating, which isn't directly related to oil pressure. I would take the S10 to a reputable/trusted mechanic and have him perform the following tests.
Compression Test Leak Down Test Coolant System Pressure Test Inspect Oil for Moisture (you can do this one, remove the dipstick, does the oil on it look like milk? If it looks like milk it means there is water/coolant in the oil, a sign of a blown head gasket. However not all head gaskets dump coolant into the oil when they blow) Inspect Clutch Fan for proper operation
The mechanic will know what those mean, It sounds like your head gaskets may be blown, which is why the engine would be overheating. Also if the Clutch Fan isn't working properly, it won't pull enough air through the radiator to keep the engine cool at an idle or while sitting still.
If the Head Gaskets are blown, it doesn't necessarily mean you need a new engine.
One other thing to note, when an engine overheats, the oil breaks down and no longer works as good as it used to.

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1 Answer

Why does it continue to over heat even after changingth cylinder head gaskets?


Overheating can be caused by a few different things such as the fans not going on, the thermostat being stuck closed, or blockages in the engine due to deposits (which can be resolved by flushing the cooling system).

If the head gasket was changed this could indicate that the engine overheated due to another problem that caused this.

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Smoke is coming out of the car but its not overheating so what's the problem?


what does this smoke smell like? oil? coolant?, if it smells like coolant then u have a leaking head gasket, not all head gasket leaks cause overheating, so the fact the engine is not overheating doesn't mean you don't have a head gasket leak.

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I hate to say it, but it definitely sounds like you have a blown head gasket. Overheating and white colored, "sweet" smelling smoke are both telltale signs of this. If it started overheating first and the white smoke came after, then you will need to have your cooling system inspected after the head gasket is replaced.

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1 Answer

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sounds like head gaskets or a cracked head check oil for water

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3 Answers

Blown head gasket how much to repair?


I replaced my whole engine foe $500.00 with a 90 day warranty from junk yard motor ran great and it only had 40,000 miles on it do not wast your time with just the head if you plan to keep the car . good luck

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