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  #11  
Old 02-18-2007, 12:11 PM
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Quote:
Originally Posted by subzali View Post
Having a hard time understanding why the battery would have anything to do with this? Engine runs off alternator once it gets started...I guess I can pull the battery and see if anything changes...and maybe put a battery from a friend of mine in there...truck is still at Treeroot's house and if anybody wants to go mess with it you're welcome...I have the keys though.
Doesn't make sense to me either but it seemed to do the trick for me. Then again, at all other times it was running fine so who knows. You didn't happen to notice a fuel tanker at the gas station while you were there did you? I've read where that really stirs up the 'crap' in the gas station tanks and can lead to quite a bit of water that can take awhile to settle back down to the botton. Happened to me once with a Subaru although the gas stationed denied any liability (near empty tank, filled up, car died couple miles away from the station, Subaru drained tank and said it was like 1/3 water )

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  #12  
Old 02-18-2007, 01:29 PM
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Check out the rod side of the lifters...the picture isn't great but that third one from the back (intake on #5) is almost able to slip off the top of the push rod. maybe?
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Old 02-18-2007, 02:25 PM
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PR looks fine.. those 2 valves look a little loose even from a pic but you need to follow the adjustment procedure or do it running to get the proper spec.

My money would still be on water in the gas...
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  #14  
Old 02-18-2007, 02:34 PM
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Default we're way past fuel filters now

Check this out. Plugs 1, 5, and 6 (attached) have been impacted. Plugs 3 and 4 were a brown-red-burnt orange color, and 2 was that color but more nasty. Looks like I'm parking the 40 for a while
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  #15  
Old 02-18-2007, 06:55 PM
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Default We're pulling the head for sure

What Matt didn't mention is the intake valves on #5 and #6 cylinders won't return to a fully seated position. This assumes that all intake valves and retainer components are nearly the same dimensionally. When measuring the distance from the retainer to the the head casting on all fully closed intake valves and comparing to the same measurements taken on #5 and #6, there is a difference of approximately 0.15". This is approximately the same gap between the rocker arm and tappet (or rocker arm and pushrod seat) seen in the photos. What could be holding those two valves open? I'm not sure of the head configuration but how about loose valve seats? I've seen this on a small engine, don't know if the head has replaceable valve seats.
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Old 02-18-2007, 07:04 PM
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Some more pics of plugs 2, 3 and 4. Anybody ever seen red/burnt orange/brown spark plugs?
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Old 02-18-2007, 07:19 PM
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whoa Matt, that doesn't look good.

What kind of work had you done to it prior to noticing the plugs being impacted?
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Old 02-18-2007, 07:27 PM
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The only thing that keeps the valves out of the pistons are the springs. The valves can't hit a spark plug, only the piston can. Something came apart inside and smashed the spark plugs. If your valve springs broke or wore out, the valves could hit the piston and then the piston chunks might have been able to hit the spark plugs. To have it happen on one cylinder sure. For it to happen on multiple cylinders....that is just nuts.

If you have a bad brake booster, the last few cylinders run lean and the pistons blow apart.
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  #19  
Old 02-18-2007, 07:36 PM
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Hm...the brake booster idea might have some warrant to it. Anybody wanna come gawk at it sometime this week? Let me know
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  #20  
Old 02-18-2007, 07:46 PM
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that red looks pretty normal to me. My old plugs all have a hint of red if they aren't soaked in oil.
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