The truck is losing water but there is no visible leakage. There is lots of black smoke and then white smoke. \it also has very low power
It's going into your cylinder could be gasket could be head could be block
SOURCE: i have a 1995 gmc pickup truck , can't the coolant sensor
You have a fuel problem Is the check engine light on? What it sounds like is that the "choke" is staying on. This is all controlled by the computer of course. There are a few sensors on your TBI that I would look at first the tps and iat. Also check to make sure the heat riser on your breather is operating properly. If your coolant sensor was bad the gauge should not work but thats not always the case, and it should not cause this problem. The good thing is most of these sensors are reasonably priced. I recomend www.autopartsgiant.com for about a 50% savings over a parts house if it is one of your sensors
SOURCE: white smoke out rear tail pipe and water or black
Assuming this is happening under normal operating temperatures, it has blown head gasket written all over it. White smoke is steam and the only way that is coming from your exhaust once it's warmed up is that the head gasket has blown and started leaking coolant into the combustion chamber. You'll need to take your vehicle to a shop and have it repaired.
SOURCE: using a lot of water
check the oil make sure the color is not a milky brown. this is an indication of coolant in the oil, caused by a cracked head gasket. the coolant leak could be on the top of the engine and boiling away before you have a chance to see it.have the coolant system pressure tested.
SOURCE: 1990 ford ranger 2.9 litre. coming home from
Ford water pumps have a "weep hole" on the bottom of the water pump. When the bearings go bad the coolant will weep from there. Also you may just need to get in there with a flashlight, probably from underneath the truck and see exactly where the steam is coming from. Check all the heater hose attachments and the radiator hoses. If you are lucky it may just be a worn out hose.
SOURCE: I have a 1990 chevy
Well, billowing white smoke from the tailpipe is generally antifreeze burning off in the engine, which would indicate either a blown head gasket into a cylinder or a broken fluid passage. In the old days there was a way an automatic transmission could leak trans fluid into the engine and create white smoke too, but that shouldn't apply to your vehicle. Not certain about the noises, but clearly you have some internal damage. You can check the antifreeze level to see if you have lost fluid. You can pull the spark plugs to see if you notice damage to the plugs or deposits on the plugs indicating antifreeze.
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