I wouldn’t condemn the head gaskets just yet. Intake manifold gaskets are a common failure item on your Chevy's engine. When they fail, they can leak externally, or internally, or both. When they leak internally, coolant gets into the oil....
Hello. If the engine has never been overheated then it is typically caused by a failing intake manifold gasket. This is very common on this engine. In order to determine what the issue is, a mechanic would typically do a...
The engine in this vehicle is a DOHC 4.6 liter engine. The replacement of the valve cover gaskets require the mechanic to be at a mid level of experience or lesser experienced mechanic using the proper manual for the repair....
Hello. You did not specify the mileage of your vehicle but if the thermostat is not changed around every 60,000 miles it may cause overheating. Thermostat replacement is considered routined maintenance just like brakes or oil changes. I would recommend...
The pan is the most common leak area on these transmissions, but it would need to be inspected to see if the case, or filter, is the cause of the leak. If you are low on fluid, I recommend that...
Ticking is usually valve train related. Your engine has hydraulic lifters, they are self adjusting. One thing that can go wrong is the rocker stud can pull out of the head. They are pressed in originally. Check the nuts have...
The engine overheating erratically is the first thing that comes to mind. Other problems like hoses, radiator or heater core bursting or leaking all of a sudden. The extra pressure from combustion pressure entering the cooling system causes this. Continuous...
Hello there, thank you for asking about your 1991 Oldsmobile Cutlass Calais. With the other items replaced and a continued overheating situation, you may want to consider replacing the coolant water pump. Any time a vehicle overheats, it is a...
Oil on the spark plugs can come from a failed seal, or it can come from a failed valve cover gasket. The spark plug well seals you are referring to can be changed. It is a slightly lengthy process to...
First, you have to determine if it is engine oil or transmission fluid. If you have an automatic transmission, then there is a heat exchanger in your radiator. Transmission fluid runs there in two hoses. If it cracks, you will...
I would recommend checking for smoke coming from your exhaust. Since you are not able to find a leak and you are positive that the coolant is not mixing with the oil, it is very likely that your engine is...
You are correct. The most likely cause of an intake manifold leak, is gasket failure. These gaskets fail for a number of reasons and can be swapped out in a day. The majority of the process is removing the manifold...
These engines, if turbocharged, can have various problems; the system over-boosted and blew the head gaskets, or the engine overheated and warped the heads, causing the gaskets to leak. Either way, this may have damaged the heads, so the repair...
The majority of the top end of the motor will in fact need to come apart in order to replace head gaskets. However, this would not necessarily be true for replacing only the timing belt.
Hello. Leaks, especially from the head gasket, are problematic because they can lead to overheating and engine damage. This is something that you will want to take care of sooner or later. I would recommend having a technician locate the...
Hi there. Common signs of a blown head gasket are: overheating, thick white smoke from the tail pipe, milky liquid in the oil cap or radiator cap, or loss of coolant. If you need assistance with an inspection or replacement...
Hello there, thank you for asking about your 2007 Mercury Mountaineer. This is a fairly common issue on many cars. Your car is equipped with a V-8 motor which has two separate "sides" of the motor where the cylinder heads...
Hello there, thank you for asking about your 2004 Chevrolet Impala. Your car has a leak which has to be pinpointed and repaired. If by chance the leak is in the head gasket, the head gasket will have to be...
Hi, some of these engine cylinder heads were manufactured with a machining flaw that will leak coolant on the right side of the cylinder head. A coolant pressure test of the head will need to be done to verify the...
Hi there. If the car is showing a code it would truly help to know what the code is. If the car was running fine prior to the gaskets being installed and it is running rough now then it is...
