How do you know when you need a bottom end rebuild?
Simply grab the con rod and push and pull it while feeling for any movement. There will always be a small amount of side to side play, but there should be no up and down play whatsoever. If there is play, then the crank will need replacing, which means a full rebuild is needed.
How do you test a con rod?
1. Check the ovality of the connecting rod: Check the ovality of the connecting rod by tightening both parts at its rated torque. Inside micrometer is used to determine the correct and current ovality of the connecting rod. If the ovality is out of limits, the connecting rod is not to be reused.
When do you know you have a rod bearing problem?
On the contrary, if you hear a deeper, thudding noise, then this indicates a problem with a main engine bearing, rather than a rod bearing. If the oil light on the car dashboard goes on, then this might indicate a problem with a rod bearing.
Why does the oil light go on when a rod bearing is loose?
If the oil light on the car dashboard goes on, then this might indicate a problem with a rod bearing. This is because a spun rod bearing, i.e., a loose bearing that rotates independently of the connecting rod and the crankshaft, seals the oil holes on the crankshaft.
What’s the best way to check engine bearings?
Keep track and note what you find in the filter. Second, remove the oil pan and oil pump if necessary to inspect the main bearings. Next, remove the front cover. At this point, clean any old gasket material from the mating surfaces and scrub them with scrotchbrite and solvent. Set aside to dry. Remove the main bearing caps one at a time.
When do you know your bearings need to be replaced?
Remove and inspect the bearings for any damage. If rather than a smooth wear all over, the bearings show scratches, dirt buildup, discoloration, or pitted surfaces, then they need to be replaced.