2000 exscursion 7.3. ate up push rod. - Ford Powerstroke Diesel Forum
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Old 12-14-2011, 08:03 PM
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2000 exscursion 7.3. ate up push rod.

I have this 00 excursion at my shop came in customer stating he was driving at 70 on the freeway and then exited and it was running rough. This vehicle has a hot air intake and a programmer on it. I had no dtcs other than a p0605 which is due to the programmer. I did a contribution test and it came up with cylinders 3, 4, and 8. I pulled the valve covers for inspection of the UVCH and they were ok but , I got a push rod laying off to the side on cylinder three. So i grab my magnet and pull it out and the bottom half of an inch is missing and chewed off. I looked in the head at the lifter surface and it looks beat up. The oil pressure gauge was also reading nothing with the idiot light on at idle , but if you give it any throttle whatsoever it immediately jumped to the normal half gauge range. My question is? is this motor worth trying to save or would you think that metal is gonna be in all the injectors and trashed the engine? the motor has 265,000 miles on it. I am thinking I need to replace it as opposed to pulling the head and changing the lifter and getting a new push rod. I would hate to do all of that and then the motor is no good from the metal.. What do you pros think?
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Old 12-15-2011, 09:24 AM
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Metal in the oil is very rarely good for these motors, not to mention the injectors. It's going to basically need a full rebuild. May as well throw a reman in there. What he pays extra in parts, he'll make up in labor savings.
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Old 12-15-2011, 05:57 PM
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My thoughts exactly. I spoke to the customer today and he said the oil gauge reading zero and then coming up when you give it throttle has been like that a long time. The ball broke off the end of the push rod and then the push rod got roughed up. The thing thats got me puzzled is what the heck happened that caused this? Or is it just a fluke push rod failure.
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Old 12-15-2011, 08:22 PM
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The low/no oil pressure at idle is usually a symptom of a cracked block in these motors. My guess is that the low oil pressure contributed to the pushrod failure. Hard to know without tearing it down.
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Old 12-16-2011, 04:10 AM
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Thanks for that good information.. and the replies.
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Old 12-16-2011, 04:57 AM
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Yeah, I think you would just be wasting time trying to patch it up. If it had low oil pressure issues then it probably caused a lifter to stick which is why it broke the pushrod. So the pushrod issue is probably just the end result of the problem, not the problem itself.
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