what to do?

Asked by Sep 28, 2016 at 04:11 PM about the 2001 Dodge Dakota 4 Dr SLT 4WD Crew Cab SB

Question type: Maintenance & Repair

i had a radiator hose blow, engine did not over heat but it has a knock in the
bottom of engine now, thought my harmonic balancer may have been reason
so i replaced it but still have the noise,, was told to replace rod bearings/main
bearing?, but im not sure what my next step should be.  PLEASE HELP!!! this
truck is in excellent condition

4 Answers

68,335

Bottom knock,s are usually the main ,or rod bearing,s,if truck is in good shape other than the knock,might be worth repairing the bearing,s,but in some case,s if crank has been scarred ,it will have to be replaced or trued and bigger bearing,s installed,sorry no quick fix for this.

1 of 1 people found this helpful.
52,125

Did it knock before the hose broke? If not it sure makes me wonder if it overheated and you didn't know it. Sometimes if coolant is not surrounding the sensor you can have an overheat condition and it not register on the temperature gauge. If it indeed overheated you may have more damage than bearings will fix. Probably the only way to find out is tear it apart.

1 of 1 people found this helpful.

bob, as soon as it blew and fluids immediately sprayed out on windshield, i immediately shut it down, it wouldnt start back-up for a day after repairs cuz the coil packs were wet, and after drying and repairing it began to knock

52,125

Heck maybe running a compression test or leak down test to assess the condition of the cylinder bore and rings would be in order. It is interesting that it didn't knock before the fluid came out. I wonder if a head gasket blew, pressurizing the cooling system causing the hose to blow.

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