Originally Posted by Big Blue24 (Post 2731751)

The starter does not have enough torque to bend a rod.

Originally Posted by musicims (Post 2731746)

I made one final drive to my garage to swap out the injectors that I have been needing. They're not in terrible shape, just one that is causing a little lope at idle and some haze with it. Anyway I went to go hot start it after I cleared the garage to pull it in and it cranked over a couple then it stopped and sounded like a weird squish sound from the engine and the starter rolled back and quit. I tried cranking again and it cranked fine but would not start, I was not looking at rail pressure during cranking but I believe there was enough pressure. Gave it a few seconds and tried again and it fired up with a decent puff of smoke and wet soot belching out but cleared up back to normal.



Just off of speculation, I think that one, my problem injector, leaked down into the cylinder and it tried to hydrolock when I went to start it. I think that even though the starter sounded like it was kicked backwards the weird squish sound also makes me think that it compressed it and then got over TDC and pushed the starter further after the TDC compression. Is it possible to bend the rod in this situation? Does the starter have enough torque to overcome the cylinder pressure and actually bend parts?

Originally Posted by bateman (Post 2736961)

Sounds like a starter can bend a rod.

Originally Posted by mhuggler (Post 2736975)

Well, I’m not going to call the man a liar since anything is possible with engines. However, I’ve been diagnosing, machining, repairing and rebuilding engines of every size since I was a zygote and I’ve never seen it.

Originally Posted by mhuggler (Post 2736975)

...I was a zygote...

Originally Posted by mhuggler (Post 2736975)

Well, I’m not going to call the man a liar since anything is possible with engines. However, I’ve been diagnosing, machining, repairing and rebuilding engines of every size since I was a zygote and I’ve never seen it.

Originally Posted by biggy238 (Post 2737032)

For you...... Rain cap fell corroded until it fell off. We had a record rainfall. Cylinder filled with water. They cranked it and it ran 17 minutes until the block was cut in half. It was still running when they shut it off because of the ensuing fire. The rod lodge when it spun down, and stopped the engine so violently that it sheered the PTO's and split the case of the Hydraulic clutch that drove the machine (petersen 4700b)

Im assuming with a high degree of confidence that the rod bent before it helicoptered. :Dhttps://uploads.tapatalk-cdn.com/202...f3de160b45.jpg

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Originally Posted by mhuggler (Post 2737066)

If it wasn’t a C15/3406 Cat I may have just agreed with you but kitty cats have pretty beefy rods in them. Still not saying that it’s impossible, but it’s much more likely that the failure came from the water turning the oil into peanut butter. The problem started with the rod bearing. I actually see this often with standby gensets with exhaust systems that didn’t account for condensation disposal.

Originally Posted by biggy238 (Post 2737067)

You are a stubborn beast.
And if there were no signs of deformation or heat at the big end, and the oil sample was clean (what was left of it)?


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Originally Posted by mhuggler (Post 2737081)

You skipped the part where I said that "anything is possible". I'm just saying that it's unlikely. Calm down, the vagisil is in aisle 5.