Home > Technical (L322) > How to Find Top Dead Center TDV8 |
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sako243 Member Since: 26 Dec 2013 Location: Wales Posts: 612 |
Mine died whilst doing 60mph down a dual carriageway. Wouldn't start and just kept turning over.
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23rd Dec 2016 7:04pm |
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hamlet Member Since: 18 Nov 2016 Location: Kildare Posts: 294 |
If this was a seperate thread and issue I think I'd be telling you you might have a cylinder head gasket problem. Sounds like you're getting unburnt fuel out the back. I'd be doing a compression test next. |
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23rd Dec 2016 7:09pm |
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theanswers Member Since: 30 Jul 2012 Location: Ireland Posts: 305 |
Hopefully not! Awh, it's just one big mess. I was hoping it was the turbo. We checked the head prior to putting it on and it was perfect. Likewise, the issue only appeared, was fine for the first while.
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23rd Dec 2016 7:23pm |
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hamlet Member Since: 18 Nov 2016 Location: Kildare Posts: 294 |
Did you get the head skimmed or pressure tested while it was off? |
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23rd Dec 2016 7:24pm |
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theanswers Member Since: 30 Jul 2012 Location: Ireland Posts: 305 |
I'm nearly sure the head was pressure tested, prior to resale. Likewise was removed perfectly functioning.
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23rd Dec 2016 7:29pm |
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hamlet Member Since: 18 Nov 2016 Location: Kildare Posts: 294 |
Just remembered it was a replacement head, apart from getting it skimmed, did it come with it's original valves or did you use your own, and were they reground or lapped in? |
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23rd Dec 2016 7:29pm |
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theanswers Member Since: 30 Jul 2012 Location: Ireland Posts: 305 |
It's just strange that it happened out of the blue. Was fine, then suddenly not. |
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23rd Dec 2016 7:31pm |
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theanswers Member Since: 30 Jul 2012 Location: Ireland Posts: 305 |
We used everything from the new head. It was complete, nothing from the orginal head was used. New gasket also! Obviously! |
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23rd Dec 2016 7:32pm |
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hamlet Member Since: 18 Nov 2016 Location: Kildare Posts: 294 |
I hate to say it again but personally I'd check the compression, without compression you're wasting your time with everything else. |
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23rd Dec 2016 7:33pm |
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theanswers Member Since: 30 Jul 2012 Location: Ireland Posts: 305 |
Well it will do no harm anyway. Will do! Have a good Christmas. |
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23rd Dec 2016 7:35pm |
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hamlet Member Since: 18 Nov 2016 Location: Kildare Posts: 294 |
I feel your pain and frustration, I did the head on a Navara last year and had the head on and off it 3 times before I got it running right. I bought it with a blown cylinder head gasket, among other things, head off, skimmed as it was warped, pressure tested and supposedly valve seating was checked, head back on, all buttoned up, wouldn't fire, no compression, head off again to have the valves checked, sure enough they weren't seating properly probably due to overheating and the slight warp, valve seats reground, head back on, all buttoned up, wouldn't fire, no compression, checked the valve clearance, zero clearance on some valves, head off again, guy who reground the seats admitted he thought it has hydraulic lifters so didn't think clearance was an issue and went nuts on the seat grinding resulting in some of the valves sitting so far into the head that they were in constant contact with the cam and slightly open all the time. Head off again to have the valves reshimmed and clearance set, head back on for the third time, all buttoned up, finally fired sweet as a nut.
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23rd Dec 2016 7:58pm |
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theanswers Member Since: 30 Jul 2012 Location: Ireland Posts: 305 |
Thanks for the reply hamlet. What would think of the fact she ran good for 30 miles? Is that strange? |
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23rd Dec 2016 8:02pm |
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hamlet Member Since: 18 Nov 2016 Location: Kildare Posts: 294 |
It is a bit strange to be honest, if it was something mechanical to put it that way, then you'd expect it to be a problem from the very start, not to run for 30 miles and then stop, but just for sheer piece of mind I'd start with compression, particularly on a replacement head that wasn't skimmed, bringing the engine up to temp may have done something to the seating of either the head or valves.
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23rd Dec 2016 8:21pm |
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rar110 Member Since: 09 Aug 2014 Location: Brisbane, Australia Posts: 1119 |
I slight warp and delayed blown head gasket after 30 miles makes sense to me. ______________________________
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24th Dec 2016 3:49am |
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