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Message started by TJ9000 on 03/17/10 at 06:39:19

Title: Plug cap/leak question
Post by TJ9000 on 03/17/10 at 06:39:19

This may sound dumb but why do you have to TDC if only changing out the plug cap?

Hoping to tackle this today so input would be greatly appreciated.

Title: Re: Plug cap/leak question
Post by PipJones on 03/17/10 at 06:47:32

I didn't TDC mine.....

it sure does seem like an extra step... why mess with the valve train when all you're doing is removing the head cover.....??????

Title: Re: Plug cap/leak question
Post by TJ9000 on 03/17/10 at 06:56:22

Thats what I was thinking but I didnt want to skip it if theres an advantage that I'm just not seeing.

Title: Re: Plug cap/leak question
Post by Yonuh Adisi on 03/17/10 at 10:56:34

I think it's probably because once someone tears into the engine that far most of the time they go ahead and do a camchain check. That's just my theory anyway. http://annemccaffreyfans.org/forum/images/smilies/shrug.gif

Title: Re: Plug cap/leak question
Post by verslagen1 on 03/17/10 at 11:18:30

If you're removing the head cover, you want to unload the valves and rockers so it don't snap up on you when you loosen the bolts.

Title: Re: Plug cap/leak question
Post by serenity3743 on 03/18/10 at 05:21:11


43504746595452505B04350 wrote:
If you're removing the head cover, you want to unload the valves and rockers so it don't snap up on you when you loosen the bolts.

I agree with V.

Title: Re: Plug cap/leak question
Post by PipJones on 03/18/10 at 07:03:13

Does the "valve cover" serve as the cam's upper bearing??? cus if not, nothing is being unloaded by TDCing the motor......

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moments later
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I just looked at a parts catalogue and it SURE does look like the valve cover serves at part of the cam bearing.....

i.e. I was very lucky to not have someing go wrong when i did my plug leak.....

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