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TOV Forums > Repair and Maintenance > > Re: 06 odessy spark plug tube leak

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mhg
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06 odessy spark plug tube leak    (Score: 1, Normal) 11-12-2018 19:21
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New to the Honda vehicles. Picked the van up a couple weeks ago. Getting it ready for the road. Pulled the plugs today and found all three plugs on the rear side have oil leaks.

My main question is do the valve covers have to be removed to replace the tube seals or can they be pulled and repaired without pulling the valve covers.

Thanks, Mike

Potenza
Profile for Potenza
Re: 06 odessy spark plug tube leak    (Score: 1, Normal) 11-12-2018 19:33
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mhg wrote:
New to the Honda vehicles. Picked the van up a couple weeks ago. Getting it ready for the road. Pulled the plugs today and found all three plugs on the rear side have oil leaks.

My main question is do the valve covers have to be removed to replace the tube seals or can they be pulled and repaired without pulling the valve covers.

Thanks, Mike

The valve cover has to be removed to replace the tube seals. They seat into the underside of the valve cover.

Chris_6MT
Profile for Chris_6MT
Re: 06 odessy spark plug tube leak    (Score: 1, Normal) 11-12-2018 19:35
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Did this on our 05 a few weeks ago during timing belt service. One tube grommet was leaking badly and rear gasket was leaking. Yes you have to remove the valve cover. Itís a total bear. Check out YouTube videos and be very patient.
mhg
Profile for mhg
Re: 06 odessy spark plug tube leak    (Score: 1, Normal) 11-12-2018 20:16
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Ok, thanks guys. I had planned on doing the valve adjustment down the road. Guess it will be sooner than later.
Mike

lothian
Profile for lothian
Re: 06 odessy spark plug tube leak    (Score: 1, Normal) 11-26-2018 22:16
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hiya, mike.

oil in the top-side of the plugs is very likely failed tube seals. if they're original to your van, the gasket polymer has likely hardened. you can't just replace a tube seal if the head cover has never been removed before--you'll need 12030-P8A-A00, a complete head cover gasket set. you may as well buy two sets (for obvious reasons). i recommend genuine honda as some aftermarket products seem to be made of less robust stuff--if you insist on aftermarket (reasonable, given the expense of the genuine honda set), mind the reviews.

so yes, you're gonna have to remove the head covers. the upshot is that removing them isn't terribly difficult: just five 10mm fasteners, but remember where that lone long one goes! replacing tube seals is challenging. reinstalling the head cover without tearing the new tube seals is also challenging. i've done this job. what follows is my advice.

the old tube seals are difficult to remove from their seat in the head cover; the new seals are similarly difficult to seat squarely. be crazy careful not to scratch the aluminum seat when you're prying them out. as for installing the new seals, i recommend you wet the seal perimeter and seat with silicone spray or motor oil, then push the seal into its seat with a suitably sized block of woo, then whack the block to flush the seal in its seat; resist the impulse to push them in along their edge--they will rip. if you destroy a seal--it's easy to do--NAPA sells them individually (Altrom brand, p/n: ATM LB553).

installing the head covers seems straightforward, but it's kinda tricky. honda didn't provide any positive engagement (like a pin or groove or seat) to seat the head cover precisely. so you're gonna have to sort of eye the thing where it needs to go and "nail it" when you lower it on to the head. the tube seals will not cooperate on your first, second, or fifth attempt, of course; and they can easily tear if they get caught on the edge of the tube. wet the seal interior and tube exterior with silicone spray or motor oil, then carefully lower the head cover. there'll be a lot of play in the cover, so scootch the thing side to side to until the tube seals slip in place. stick your finger thru the cover down into each tube and feel around to make certain the seal isn't pinched--you shouldn't feel any bit of seal inside the tube. do NOT tighten the head cover if you do, or you WILL be replacing a tube seal.

the five valve cover fasteners are a special kind of fun to locate also--still remember the specific location for that lone long one? site the first fastener in its hole and wiggle the cover until it threads, then hand-tighten it. the remaining fasteners should be easier to thread. snug each fastener, but don't over-tighten them lest you wanna learn how to install HeliCoil!

good luck!














 
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