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Looking at a 2003 Accord EX V6 3.0 that has an oil leak from a bolt on the fire wall side of the engine down at the bottom toward the front of the engine, the only way to remove this bolt is pull the axle. Is this the bolt that you remove so you can hold the balance shaft in place to to change timing belts? If so I think the sealing washer didnt get put back in by someone. Any ideas?
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The V6 does not use a balance belt or balance shaft. I’m having trouble picturing the bolt you’re referring to. Are you sure it’s coming from there? Normally with oil leaks start at the top and work your way down. A picture would be very helpful as oil leaks can come from anywhere.
It may be one of the side cap bolts.. All Honda compact V6 engines have 4 main bearing cap side bolts on each side of the block that connect into the side of the Main bearing cap’s where the crankshaft lives. Those bolt threads are not sealed at the factory and sometimes the oil can seep past the threads and washer and cause a leak on either side of the block.
The fix is to remove the bolt, clean it and apply HondaBond HT to the threads and washer contact area and torque the bolt to spec. I’m not saying this is your problem but that may be one of those bolts that’s leaking.
[quote=”JamesB1985″ post=53093]It may be one of the side cap bolts.. All Honda compact V6 engines have 4 main bearing cap side bolts on each side of the block that connect into the side of the Main bearing cap’s where the crankshaft lives. Those bolt threads are not sealed at the factory and sometimes the oil can seep past the threads and washer and cause a leak on either side of the block.
The fix is to remove the bolt, clean it and apply HondaBond HT to the threads and washer contact area and torque the bolt to spec. I’m not saying this is your problem but that may be one of those bolts that’s leaking.[/quote]
It’s not a good practice to put ANYTHING on the threads of a main cap bolt as it will adversely effect the torque. In addition the torque is critical on this bolt and for that reason I don’t recommend removing it if it is indeed the issue.
I’d like to see a picture of the leak to see what you’re referring to.
[quote=”EricTheCarGuy” post=55229][quote=”JamesB1985″ post=53093]It may be one of the side cap bolts.. All Honda compact V6 engines have 4 main bearing cap side bolts on each side of the block that connect into the side of the Main bearing cap’s where the crankshaft lives. Those bolt threads are not sealed at the factory and sometimes the oil can seep past the threads and washer and cause a leak on either side of the block.
The fix is to remove the bolt, clean it and apply HondaBond HT to the threads and washer contact area and torque the bolt to spec. I’m not saying this is your problem but that may be one of those bolts that’s leaking.[/quote]
It’s not a good practice to put ANYTHING on the threads of a main cap bolt as it will adversely effect the torque. In addition the torque is critical on this bolt and for that reason I don’t recommend removing it if it is indeed the issue.
I’d like to see a picture of the leak to see what you’re referring to.[/quote]
I’d normally agree but this information is direct from American Honda Motor Co. – June 2009 ServiceNews article.
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