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Main Seal Leak?

  #1  
Old 03-15-2019, 07:38 PM
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Main Seal Leak?

I've noticed a small bit of engine oil collecting on the bottom of the oil pan of our 2013 Fit Sport Automatic. It's not oil I've spilled, it's not the drain plug, it's not the oil filter and as yet, the volume is pretty small (maybe a thimble full per 1000 Miles). The car has only 73,000 Miles on it.

I haven't yet put the car up on ramps for a better look. From these clues, is it possible for any of y'all to tell what's going on? I fear it's an engine seal leak, but if so, I'm not sure whether it's the rear main seal or the front main seal. Still though, at only 73,000 Miles, a seal failure seems premature.

Any thoughts or advice is welcome. Thanks.
 
  #2  
Old 03-15-2019, 08:51 PM
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on the bottom of the oil pan
Make sure the drainplug is tight

look up around all sides of the pan, can you determine from where above the oil actually came from?

Clean off the entire area using a solvent, then cover the areas in bath talc or right guard...the white powder should make new trails from leaking liquid stand out
 
  #3  
Old 03-16-2019, 09:11 AM
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Thank you ezone and good idea using talcum powder. When I someday get the opportunity to lift the front end on ramps, I 'll run a finger below the crankshaft pulley to see if it may be the front main seal. No oil is evident around the drain plug. The area around what I think is the flywheel inspection cover also looks clean.
 
  #4  
Old 03-17-2019, 10:59 PM
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I had to replace crack seal ,and oil pan seal at 91k, previous owner did not change oil regularly. Its not that hard to change the seal and reseal the oil pan. Just takes time, parts are cheap $15 Honda Crank seal and $15 for a tube of Honda seal to do the oil pan.
 
  #5  
Old 03-18-2019, 02:25 PM
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Originally Posted by JerrySFL View Post
I had to replace crack seal ,and oil pan seal at 91k, previous owner did not change oil regularly. Its not that hard to change the seal and reseal the oil pan. Just takes time, parts are cheap $15 Honda Crank seal and $15 for a tube of Honda seal to do the oil pan.
Does the timing chain sprocket have to come off the crankshaft for the front seal replacement work Jerry? I get kind of nervous working shadetree jobs involving timing. Thanks!! I hadn't thought about it being leak at the oil pan -- that's a good idea I need to check out.
 
  #6  
Old 03-19-2019, 05:14 PM
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The front crank seal is accessed by removing the harmonic balancer, no need to pull the chain cover. 30 min job with a jack.
Jack up car , pull the passenger front wheel, pull off serpentine belt , cuss at the Honda crank bolt and wonder how it can be that f”[email protected]% tight , pull odd harmonic balancer (no puller needed) remove crank seal. Lube new seal with syl glide, do not beat on seal ,it sits flush to a little in the chain cover.reassemble .I
The oil pan is a bit more involved , not really hard just time consuming. Took me 2 hours with a lift.
 
  #7  
Old 03-19-2019, 09:35 PM
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Thank you Jerry. Good to know that the front main (crankcase) seal isn't a huge endeavor. The crankcase seal would be No. 25 in the diagram below, right? I'm thinking that the oil pan seal is horseshoe-shaped No. 7?

 
  #8  
Old 03-19-2019, 10:28 PM
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Yes # 7is the pan seal at the end, the rest of the pan is sealed with Honda Bond. I bought a FelPro kit that came with that anf the oil seal#6 and #26 for the dipstick tube.
 
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