Here I am

Is it possible to bend a rod hydrolocking with fuel

Attention: TDR Forum Junkies
To the point: Click this link and check out the Front Page News story(ies) where we are tracking the introduction of the 2025 Ram HD trucks.

Thanks, TDR Staff

V-Band Clamp Torque- Turbo to exhaust pipe

Good as Mopar ATF+4

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?
 
I don't think so. If it would leak that bad that it would fill up your pistons bowl with fuel within one stroke you wouldn't have left any pressure in the rail to fire up the other five.

And yes, the starter has plenty of power to destroy the rotating assembly.
You see that all the time with people try to start a (water) drowned engine.
 
I don't think so. If it would leak that bad that it would fill up your pistons bowl with fuel within one stroke you wouldn't have left any pressure in the rail to fire up the other five.

And yes, the starter has plenty of power to destroy the rotating assembly.
You see that all the time with people try to start a (water) drowned engine.

I was thinking that with the rail pressure, but there was a time right after it happened where it would not start, like one was hanging open then after the solenoid was activated it closed again. Also I think it slowly leaked in, the truck was sitting after driving about 30 minutes before this happened

Is there any way to tell "easily" if a rod got bent? I'm going to be replacing injectors, is a wooden dowel in the injector hole and in the piston bowl accurate enough to be able to see if one cylinder is not reaching as high as the rest?
 
There is no way fuel can seep in after shutting down the engine, pressure is away then.
And even if the fuel that was inside the injector seeped down it wouldn't even be close to be a problem. I'm sure your engine is fine.

To fill the bowl in the piston to the top you'd need two shot glasses of fuel. No way that this amount would seep through the nozzle of the injector in that time and like said where should it come from.
 
Ozy is correct, it’s very unlikely you filled the cylinder enough to hydro lock. But, to answer your question, yes, it’s absolutely possible to bend a rod from hydro lock. Fuel doesn’t compress.
 
Back
Top