one cause could be hydro-lock. i.e. a cylinder full of fuel, which would be caused by a plug not firing repeatedly (filling it with unburned liquid fuel). this would be a bad coil, plug, plug wire, distributor cap or rotor, ect...
another cause could be pre-ignition. a cylinder firing when it is in the wrong part of its stroke, thereby causing the explosions "up-force" to fight either the valves attempt to open, or forcing a not fully seated valve closed. this would be caused by the timing being off its mark, though your damage would be more wide spread as it would effect multiple cylinders unless this is a single cylinder engine.
also, it could be caused by a stuck lifter, though that would ultamately lead to one of the 2 above causes.
there could be other causes, but that's the most likely 3 (short of a bad cam, broken timing belt/chain, ect...).
Do you really know how an engine works? i.e. a cylinder full of fuel, which would be caused by a plug not firing repeatedly (filling it with unburned liquid fuel). this would be a bad coil, plug, plug wire, distributor cap or rotor, ect...
THIS RATES AS THE DUMBEST ANSWER EVER POSTED. WHEN A PLUG FAILS TO FIRE THE UNBURNED VAPOR IS FORCED OUT BY THE EXHAUST STROKE THERE CAN BE NO ACCUMULATION IN THE CYLINDER NO MATTER HOW MANY TIMES A PLUG MISFIRES. IF A VALVE IS NOT FULLY CLOSED THERE WILL BE NO PRESSURE ON THE PUSH ROD. PUSH RODS ARE BENT WHEN A VALVE STRIKES A PISTON RE; BROKEN TIMING BELT OR CHAIN OR JUMPED TIMING THERE WILL NEVER BE ENOUGH PRESSURE TO BEND A PUSH ROD IF A PISTON IS NOT AT THE TOP WHERE THE VALVE WILL HIT THE PISTON. Hydro- lock? not possible. The exhaust valve opens when the piston is at the bottom. The intake valve opens at the top. hydro-lock prevents the piston from reaching the top
Sure can, Quick A bent push rod will cause a loose rocker A loose rocker has no way to bend a push rod, there is no pressure.
Remove the valve cover. Remove the center nut or bolt that holds down the rocker arm. remove rocker arm, pull out the bent push rod. Install new push rod and put it back together.
NO it will not. Over revving engine, Rocker are adjusted to tight, Bad lifter. These are some common causes of that.
Which ever one you think may be bent, Just take it out and roll it on a flat surface. If it is bent bad you will have a engine miss on that cylinder.
if i understand your question correctly you mean what damage can be caused by incorrect clearances. well a loud tapping followed by either a bent push rod or the push rod beating a hole in the rocker arm.thats if set too loose. if too tight rough erratic running or bent push rod. damaged lifters.
Most likely the blade is bent.
A bent engine piston is a reference to the piston rod. The piston cannot be bent, but the piston rod can be bent.
Take off the rocker covers and see if any of the rockers are very loose.
It could be some sort of liquid in the cylinder. It will cause it to hydraulic and bend rods.
your lifters are bad at least 1 of them or on a more serious note no oil in engine bad oil pump bad oil sending unit bent push rod blown engine
If the heads don't have push rod guide plates, the rocker arms will set off center just a little. But if they are way off then you must have a bent push rod.
A bad lifter, worn piston rings/cylinder walls, carbon build up, bent push rod, and a worn cam lobe. A burned valve can also cause low compression.
well it could bet a bent push rod or a lifter could be bad
its a v6 get a inline 6
Lone electron pairs push the bonding electrons out of line.
The pushrods are underneath the valve covers. I assume this 3.4 is in a lumina or something similar (sp). When you remove the valve covers--- you will see 6 rocker arms. One end of the rocker rides on top of the valve-- has a spring on it--- the other end has the push rod in it-- it goes down into the engine. you have to loosen the nut in the center of the rocker to remove the push rod. Has someone told you it has a bent push rod? Hope this helps---Thomas
Pull the fuel pump off and remove the lower two bolts that hold the cover plate to the block. Slide out the push rod and figure out why it's stuck. If it's just a little sludge, you should be able to clean things up enough to get the push rod to move freely. Also, roll the push rod over a flat surface to make sure it's not bent.
I would suspect a bent pushrod but check the rocker for wear also. Good luck.
It is probably a broken valve spring.
It is generally caused by improper valve adjustment. But can be caused by excessive RPM. On the 17.5 the intake push rod is most often the one bent or broke. Try idling down the engine prior to turning it off.
For intake or exhaust valves; Lack of oil, defective valve, bent push rod, foreign object damage, etc.
intake short push rod, exhaust long push rod. put short push rod on rocker closes to intake manifold.
exhaust puh rod is longer. they measure 6 inches while intake push rods measure 5.68 in
Bent crank or bent connecting rod. Probably bent connecting rod...