Question:
Dear Kevin
I need your advice. I am about to overhaul my motor. When I reach 80km/ph I get the oil pressure signal and the siren goes on and the red light flashes on the dashboard. My mechanic advised to have the crank grinded. I am taking the crankshaft for grinding as it is currently making a knocking noise. Please advise what other things will need to be replaced after the crank is done in order for the engine to last me longer, and to do a proper job. I will prefer to do this myself. I am not a professional mechanic but would like to learn more.
Hoping to hear from you soon.
As with any engine rebuild, you will have to make the decision to rebuild or buy a replacement engine. The replacement engine can be new, used or remanufactured. I do not recommend a novice rebuild their engine, unless they can afford to make a few mistakes and accept that as the price of education. With that said, any rebuild will include the following…
1. Compression check if possible before removal of engine. Check compression on all 4 cylinders paying attention to the maximum value as well as the difference between cylinders. Compression should be around 130 – 160 psi depending on how much wear there is in the cylinder. If compression values are low in any cylinders a leak-down test will need to be performed to determine where you are losing compression. Possible suspects are bent valves or worn rings.
