Post by
Custom101 »
https://forums.nicoclub.com/custom101-u150715.html
Fri Feb 05, 2010 10:10 am
Look in the radiator reservoir for red or pink coloration. Also check under the radiator cap for ketchup (red rust). If the fluid is anything other than greenish yellow, then the engine is rusting on the inside of the block (don't buy). Check the compression on each cylinder cold and hot (should be between 175-149psi). If they are not all the same pressure, then you have a bad head gasket. If one cylinder is lower than the rest, then drop a few drops of new oil in the cylinder and retest that cylinder. If the compression rises 3-7 psi, then you have a bad piston ring. Squirt brake parts cleaner (not as harsh on rubber as carb cleaner) gingerly around the vacuum lines and intake manifold plenum. Squirt a little and listen for the engine to rev up. If it does rev up, then you have a leak in that area. Also check the exterior of the engine for excess oil. That's all I remember for right now, it has been awhile since I purchased a used vehicle. Good Luck