Knocking noise from my motor? Help please!!

[Josh26]

ok today i was driving my cb7 each time i hit the gas i heard a little knock noise i was like what the hell but didnt really pay attention to it till i stop 300 yards of more driving at a stop light. as i give it gas it makes a knocking noise like metal on metal and my car is completely gutless you give it some gas it jus bogs like gets deep but not going anywhere. so i got home and put it in neutral and rev it to like 3000 few times to hear the noise and still sounds like metal on metal...Can anyone help me i've never had this problem with my car and im only 16 so some experienced people please help
Thanks!

[gnode]

I had a Toyota Corolla that I accidentally set the timing too far advanced and when I rev it, it made a loud knock. Or maybe your valves are hitting your pistons? But I'm not that experienced.

[bruno8747]

Couple things could be it, Something probably came loose in the engine bay and just making noise.

Then there is a problem of rod knock. It could just be that you spun a bearing. Either you have no oil in there or your oil pump is on its way out. I say drain the oil and see if there are any metal particles in the oil, basically the oil will be shinny.

I suggest also that when you change the oil filter, cut it open and see if you have any metal deposits in the filter.

Did you mess with the engine as far as adjusting or doing anything?

[Josh26]

Couple things could be it, Something probably came loose in the engine bay and just making noise.

Then there is a problem of rod knock. It could just be that you spun a bearing. Either you have no oil in there or your oil pump is on its way out. I say drain the oil and see if there are any metal particles in the oil, basically the oil will be shinny.

I suggest also that when you change the oil filter, cut it open and see if you have any metal deposits in the filter.

Did you mess with the engine as far as adjusting or doing anything?

nope when i got the engine i just cleaned it up double checked everything then put it in. havent adjusted the valves or anything. but yea when i drain the oil i'll check it and cut the filter open

[Accord R33]

Sounds like rod knock to me...check your oil, then check your bearings.

[Josh26]

Sounds like rod knock to me...check your oil, then check your bearings.

yup yup theres metal in my oil i can see it on my dip stick. ok im only 17 so what does that mean? not good with rods and stuff.

[Accord R33]

It means you should stop driving. from the sounds of it, your crank is probably screwed up. you will probably need a new one, unless your current one can be machined. then you need to buy new bearings and install/have them installed, and hope nothing else was ruined.

tough break man...

[bruno8747]

yup yup theres metal in my oil i can see it on my dip stick. ok im only 17 so what does that mean? not good with rods and stuff.

Ohhh sorry to hear dude, The best option is engine swap. Or you could go in there and change the bearings but its a PAIN in the ass. How much metal are we talking about?

And what engine is this h22 or f22?

[Josh26]

h22.. what bearings are we talking about?

[Accord R33]

Its probably your rod bearings, but it could be your main bearings. The biggest thing is to inspect the crank, if its damaged, you need to pretty much pull the motor

[bruno8747]

h22.. what bearings are we talking about?

Connecting rod bearings, You have to drop the oil pain to get to them. Then you have to check and see if the crank is messed up. Its best NOT to drive the car anywhere or even start it. The connecting rod beaings isnt that hard as changing the main bearings. You should be able to change the bearing in a day or so.

[Josh26]

Connecting rod bearings, You have to drop the oil pain to get to them. Then you have to check and see if the crank is messed up. Its best NOT to drive the car anywhere or even start it. The connecting rod beaings isnt that hard as changing the main bearings. You should be able to change the bearing in a day or so.

damn this is gonna suck i never done this befor. but guess im callin a tow truck to get it towed to are shop thanks for the help.

[ErwinM619]

just hope its not a main bearing

[Josh26]

ok so there is no metal in my oil from the dip stick. i checked my plugs they were all solid black. my idle is low but funky. if i try to rev it it will only go to like 3000rpm its like its hard to rev past that any ideas?

[mlipnickwc]

Did you start that car up again after this conversation with everyone?