Two bent pushrods - Dodge Cummins Diesel Forum
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post #1 of 7 (permalink) Old 02-05-2010, 01:50 PM Thread Starter
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Unhappy Two bent pushrods

Just passin' thru---------'06, 2500, 5.9/24v, 43Kmi, 100% stock work truck, bought new from Mr. Dodge, himself.

Digging into the dead Cummins (well, it was rattling like the top end is 3/4 full of empty beer cans) and found two bent pushrods on same cylinder.

Was always told that a bent pushrod is due to a piston kissing the particular valve. On the 5.9, is this 100% fersure, or are there experiences blamed off on other facts, ie. valve train failure due to excessive, worn clearances in the pushrod, rocker, crowsfoot and valve itself? No broken valve spring.

Still pending leakdown test on motor, but doubt the cylinder in question will be up to snuff.

Most all comments 'preciated, --M

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post #2 of 7 (permalink) Old 02-05-2010, 01:57 PM
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any idea of the operating conditions that may have bent them
ie. super high revs

2003 Std Longbed 5sp, AirDog, Dual CP3s, 3.8LPM Nozzles, Fluidamper, Valvesprings, Pushrods, Cam, Ported Head Valair Clutch, 2.6 Turbo, Water to Air.
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post #3 of 7 (permalink) Old 02-05-2010, 02:01 PM
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ya what was it doing when it happened?

2012 CCLB 4X4 auto all stock Past:2004 F-350 6.0 4x4 SRW 2008 F-250 CCSB 4X4 5.4 -2001 QCLB 2500 5.9 4x4 -2006 QCSB 2500 5.9 4x4 -2006 Mega 3500 DRW 5.9 4x4 1997 F-350 CCLB 4x4 460 Wake Up America
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post #4 of 7 (permalink) Old 02-05-2010, 02:31 PM Thread Starter
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Using bluecollar 'inhouse talent', truck was having filters, oil changed, being readied for pending new work about 50 miles on other side of town.

""Employee fired the motor up and was checking for filter leaks, when motor started to race"". Employee immediately jumped back into cab and turned off ignition. New, stock air filter had yet to be reinstalled. Mr. Dodge says 'no warranty, bring money if you want us to replace the motor'.

99% of the above is second or third hand and leaves me to ask more questions, but getting thinner and thinner answers. Really, we can imagine many scenarios as to what happened.

Thanks for your interests, --M
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post #5 of 7 (permalink) Old 02-05-2010, 03:50 PM
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well if the rvs went high enough you could have taged the valves and bent the pushrods
i would look for a oil in the intake tract. did they brake clean the hell out of the oil filter and get alot in the intake/ air filter. just lookingfor the reason for the over rev

2003 Std Longbed 5sp, AirDog, Dual CP3s, 3.8LPM Nozzles, Fluidamper, Valvesprings, Pushrods, Cam, Ported Head Valair Clutch, 2.6 Turbo, Water to Air.
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post #6 of 7 (permalink) Old 02-05-2010, 04:28 PM
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Quote:
Originally Posted by Mackie View Post
Using bluecollar 'inhouse talent', truck was having filters, oil changed, being readied for pending new work about 50 miles on other side of town.

""Employee fired the motor up and was checking for filter leaks, when motor started to race"". Employee immediately jumped back into cab and turned off ignition. New, stock air filter had yet to be reinstalled. Mr. Dodge says 'no warranty, bring money if you want us to replace the motor'.

99% of the above is second or third hand and leaves me to ask more questions, but getting thinner and thinner answers. Really, we can imagine many scenarios as to what happened.

Thanks for your interests, --M
If the shop was at fault, they should be footing the bill.
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post #7 of 7 (permalink) Old 02-05-2010, 04:34 PM
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ya

u mean the work was being done at the dodge place or where?

2012 CCLB 4X4 auto all stock Past:2004 F-350 6.0 4x4 SRW 2008 F-250 CCSB 4X4 5.4 -2001 QCLB 2500 5.9 4x4 -2006 QCSB 2500 5.9 4x4 -2006 Mega 3500 DRW 5.9 4x4 1997 F-350 CCLB 4x4 460 Wake Up America
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