OK - I have a 1982 Jeep CJ7 with a Chevy 350. Unknown to me, the oil leaked out and the engine siezed up. I filled it up with oil, let it sit for a couple hours and it does crank up and idles just fine. However, there is a very obvious "knocking" sound coming from the engine. I hope it's not as bad as it sounds, but if anyone can give any ideas as to what may be the problem, please let me know.
2007-09-09 14:38:22 · 14 answers · asked by buckwheat6105 1 in Cars & Transportation ➔ Maintenance & Repairs
Is it possible to have the engine rebuilt?
About how much am I looking at?
2007-09-09 14:53:55 · update #1
You have a big load of trouble. The engine most likely spun a rod bearing. It'll have to be disassembled and rebuilt>
2007-09-09 14:46:48 · answer #1 · answered by Ron B 6 · 2⤊ 0⤋
If the noise gets louder as you accelerate or goose the carburetor while looking at it with the hood up, you most likely "spun an rod bearing".
That loud clanking is the connecting rod crashing into the surface of the crankshaft (journal) without the benefit of the a nice soft bearing being there to cushion this connection.
You'll soon observe a gunpowder like material in the oil and oil filter if you dump the filter oil in a drain pan.
If you have a rather fast oil leak that caused this, the head is slightly warped (fraction of a millimeter) and the oil is leaking out between the head and block.
Otherwise, you may not have checked the oil since 1982 and the oil has turned into a solid lump of tar in the oil pan. Ha-ha!
Best repair is to swap the engine out with a rebuilt engine.
Good Luck!
2007-09-09 15:04:52 · answer #2 · answered by CactiJoe 7 · 0⤊ 0⤋
it sounds to me that the parts got hot and some parts like the rods or the rod bearings are messed up. you could have a rod that needs replaced. i think you should have turned it with a breaker bar a little bit at a time. you could have done that by turning the crankshaft with the breaker bar 1st instead of starting the engine. this is typical of the 350 chevy engine. see if you can find an oiltreatment put it in and let it idle for a while see if the noise quiets down. you may remove the pan and see what the rods look like is something broke away from the piston or it is loose and needs to be replaced. it may not be able to be tightened. hope this helps i hope the rod does not go through the block. i like those engines
2007-09-09 14:57:36 · answer #3 · answered by frankm1412@yahoo.com 4 · 0⤊ 0⤋
Hate to tell you, but your engine did NOT sieze, had it siezed, it would never turn over again, not even if you added all the oil in the world.
But you probably have killed a rod bearing, and your engine is toast, thats why you should always check your oil level.
2007-09-09 14:48:27 · answer #4 · answered by Anonymous · 1⤊ 0⤋
I would say that it is time for a rebuilt/new engine or another vehicle. Now to the knocking you are hearing more then likely are your rods going out.
If it was me i would not drive it any more until you decide what you are going to do.
2007-09-09 14:55:43 · answer #5 · answered by Anonymous · 1⤊ 0⤋
That "knocking" sound is probably a rod bearing worn out from no oil. I guess whoever installed the motor never installed a gauge or idiot light. Unfortunatly it look`s like you are in for a rebuild or new/used motor. Sorry, but the damage is done. No miracle cure here.
2007-09-09 14:46:13 · answer #6 · answered by Anonymous · 2⤊ 0⤋
Yes, your engine is definitely fried. Without lubrication there is too much friction and the pistons will scratch up the sides of the walls. Get another engine.
2007-09-09 15:08:02 · answer #7 · answered by Phil i 1 · 0⤊ 0⤋
Your main bearings are toast. Hopefully you didn't take the crank with it.
2007-09-09 14:53:25 · answer #8 · answered by suprchgdr2 2 · 0⤊ 0⤋
try using premium gas from chevron or 76. buy the midgrade or supreme to get rid of knocking sound
2007-09-09 14:58:19 · answer #9 · answered by Anonymous · 0⤊ 1⤋
U R screwed...engine is toast
2007-09-09 14:43:24 · answer #10 · answered by maxinebootie 6 · 1⤊ 0⤋