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Shouldn't have to remove much to get at them. Does the glow plug lamp flash after the engine has started. I'm not sold on it being a glow plug issue, these engines start without them down to well below freezing without any real trouble, if it IS this its more likely to be a wiring issues rather than sudden failure of 4 glow plugs. Leak off pipes on the low pressure side, or an injection problem is more likely.
Ours did that and in real cold weather could not boost it. Replaced the spark plugs and plug wires and no trouble since. Depends when the plugs were replaced before. If you replace the wires take one off at a time and replace it with a new one. Some people take them all off at once then they are in trouble.
Virtually all engine blocks have freeze plugs. They serve two purposes:
They are designed to burst out of the block in case the engine coolant freezes, preventing a cracked block.
They allow for a more thorough cleaning of the engine block when the block is "tanked" during rebuild/remanufacture.
One thing to consider...what weight of motor oil are you using during the bitter cold months? Heavier weight oils get very thick on the cold mornings. This makes cranking harder and increases engine wear. Check with a local dealer and see if the manufacturer has any suggestions for a thinner oil in the cold months to make starting/running easier.
Change the oil right away, just in case coolant did somehow get into the crankcase.
Those rubber plugs should not leak. Did you clean the block good where the freeze plugs goes? It needs to be free of rust, scale, and dirt so the plug seals good. When you get it sealed tight you can monitor the coolant level to see if it leaks somewhere, like the head gasket. That is the only place coolant could get into the oil. Or if you have the coolant system pressure checked, you will find out if there are any leaks like a head gasket. If the system holds pressure, you are good to go. That means the gasket is good, and since no overheating, there is no or little chance you would have a cracked block or head-another way that coolant could get into the oil.
I would reccomend removing the exhaust manifold, then disconnect both motor mounts and raise the engine as much as possible..you will appreiciate all the room you can get
Hello, The most likely problem with your van, assuming that there is no check engine light being lit is that the small motor on the air intake manifold has stopped working . this will cause the motor to run badly when it is at idle forcing you to keep the gas pedal depressed to keep it running smoothly. This motor usually has only 2 screws securing it to the manifold so it is an easy fix.
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