Mazda 626 2.0 Fs Distributor Engine For Sale

4 Things To Check When Buying A used car engine

Oil Quality Check

When having the engine on a stand you can check for oil quality. If it has been running then there is no way to tell if the oil is good or not. It is best to have everything off of it that you can, including remove the valve covers so that they are out of the way. You should be able to easily see how dark or dirty the oil is. The darker and dirtier it appears means it's time to change it.

Compression Testing

This test will determine the amount of power in an engine by measuring how much pressure is being exerted when all cylinders are at working capacity with no exhaust. What you need for this is at least 3 compression tester's. They are not that expensive but you do need to have them on hand before buying the engine or else there will be no way for you to test it.

Leak-down Test

A leak-down test will tell you how many leaks might be in the cylinders of the engine, which can cause some major problems later down on its life. The first thing you have to do is remove all spark plugs and then attach your tester unit. Then crank it over with the starter motor steadily for at least 5 minutes without re-installing any spark plugs. If more than 15% of your units are leaking than you might want to think about buying another engine or take it somewhere for repairs.

Basic Inspection

The first thing to do is remove everything including the head and even take out all of the valves. Then check for any chips, cracks, bends and other damages on all parts of the engines. Next you should check if there are any broken parts within the block such as loose piston rods, cracked castings and so on.

Conclusion

Please note the above information acts as guide only and you should always check everything with a qualified mechanic.

(E&OE)