Medium and Heavy Trucks
Have Truck Repair Questions? Ask an Expert
Thanks for asking your question and requesting me. I will try and help you out.
If the engine will not turn over. I would suspect there is water on one of the pistons. I have seen this before. Since there was no antifreeze in the engine. I would suspect the water got in the cylinder from a leaking jacket water cooler on top of the head, acracked head or cracked cylinder liner.
I would first remove the jacket water cooler and see if it has leaked into one of the cylinders. It should be easy to see. if it has, you will need to remove the injector it's on to get the water out.
If the cooler has not leaked. I would suspect the head or liner has a crack.
Please reply back if you need more help or have more questions. I am happy to assist.
Not all 3406 engines have one. But if yours does. It is on top of the engine on the drivers side of the truck. It sits on top of the six intake ports on the head. This cooler uses engine coolant to cool the intake air.
No. That's the intake. Your engine does not have a jacket cooler. Yours is a later model and has a air cooler in front of the radiator.
So I must suspect the head gasket or head.
That's possible but not very common. If there is something on the piston you should be able to turn the engine back awards. If it a bearing it will not turn either way.
Actually if there's water on a piston it will stay. It will not leak down.
The best way is to use a large pipe wrench on the vibration dampener. It works good to turn either way.
Hey. I just wanted to see how things were going. Please let me know if you need more help. I am happy to assist. If my information was helpful, please leave a good or higher rating so that I receive credit. Thanks.
Thanks for the information.
If the engine will not turn forwards or backwards. I must suspect the crank is seized. Could be a rod or main bearing. To verify I would remove the oil pan and check the rod and main bearings. I am sorry. I wish I had better news.