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Old 08 Mar 2011, 10:46 am
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Default Really bad sound comin from engine in 95 accord??!!?

Within 10 minutes this knockin noise started and kept gettin worse. At first i thought it was tha axle clickin but i had checked tha axle before and it was fine. But my friend told me it might be a rod bearing failure?? And that i would need a new crank and bearings or just a new motor. Anyone know anythin else it could be???
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Old 08 Mar 2011, 11:01 am
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with out hearing it all we can do is guess.
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Old 08 Mar 2011, 11:16 am
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Honda's are pretty reliable - but the heads don't tolerate ANY overheating. One little overheating incident and typically you loose a valve in some fashion. Which leads to more expensive issues - like a bad piston - not too far down the road.































I would have a mechanic confirm what is going on - they can probably tell from the sound. A leaky exhaust manifold can sound horrible - but is not that expensive to fix. Does the noise occur when the car is not moving (if yes - definately engine related).































Have you overheated the engine recently? If yes (and you get confirmation it is "internal" to the engine) - you probably are best off to rebuild this engine or go look for a running engine from a junk yard that can be swapped.































Many mechanics will tell you they can fix the valves by just rebuilding the head. Generally - that results in a tempory fix at best. At least on a Honda.....that is my experience.































Jim
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Old 08 Mar 2011, 11:31 am
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The best way to get an idea what is going on is to use a mechanic's stethoscope (about $10 at most auto parts stores) to listen around the engine and pin the source down better. To listen to the rod bearings, put the probe of the stethoscope on the block about halfway down the front, where each end of the engine is. If you hear the knock more clearly there than you do at the top of the engine it is likely to be a rod bearing. By the way, have you checked the oil level?































A few months ago my son-in-law ran my daughter's 1993 Accord out of oil on the freeway and the engine seized. When I dropped the oil pan it had about an ounce of gold colored metal chips and flakes in it. Three of the rod bearings had spun, cutting off oil flow to those pistons. Amazingly, the crank and the piston ends were undamaged. I replaced the lower half of the main bearings and replaced the rod bearings (all the new bearings measured between .001 and .002 inches with Plastigage) and the car is driving around today. It is not healthy but it gets around. The parts cost about $125 total. I have instructed my son-in-law to keep the speed down to 65 mph.
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