Engine Knocking

[STOCK]

so the #4 conrod bearing gone again aye? did you check to see if it spun for oil starvation? did you clean the oil hole in the crank? hows oil pressure with the car on idle and revving?

[TendaWolf]

oil hole in crank has been cleaned. I don't have a tool to check oil pressure.
But after seeing the gouge in the crankcase where #4 conrod bolt has been hitting i suspect something has dropped. therefore wearing the bearing unevenly n causing them to spin?

[creativepunka]

If your rod bolts were tight both times i would guess the rod is bent. The rod could also be back the front from the old owner. Also did you mark the bearing cap and put it back in the right way?

PS-A happy wife is a happy life. (best advice ever lol)
Good luck with your wedding

[TendaWolf]

Yup, rod bolts were tight both times. Bearing cap was placed the right way.
New bearings for rod #3. Still slight knock coming in at 3000rpm.
I think i'm back to square 1..
any more suggestions?
Cheers =]

thanks for that advice creative =]=]

[serpo]

Same noise happend to my CRX it turned out to be a bearing ended up costing me a whoile new block

[TendaWolf]

yeh i've changed bearings.
2 days later they were spun again
round #2 now.. but knocking is there from about 2600rpm n up
On Idle i think you can hear the rod wearing the bearing.
Maybe it will go away as it wears them in?
I have no idea at the moment.

[serpo]

no dude replace them if they spin they will take chuncks out of the head and the rods

[JohnnyVtec]

Honestly man,

Just leave it alone until you've got the time to fix it properly. Otherwise, you're going to have a huge headache that will last until you finally take the engine out of the car to do the job the way it should be done....

Hope you know what i mean....

[serpo]

if you have changed bearings twice then there is somthing wrong with the sleves in the block

[creativepunka]

if you have changed bearings twice then there is somthing wrong with the sleves in the block

LOL how can the sleve spin bearing . if your going budget then 1: check your oil pressure at idle. 2: replace the rod and check the piston and pin. 3: measure the crank.

Something has to be bent to hit the crank case tho??? And low oil pressure will spin bearings ( i never re use rods that have spun bearings). any chance of a pic of the bearings and the damage to the crank case.

[TendaWolf]

haven't got pics yet. Crank case hitting was due to crankcase being put on unevenly but that has been fixed.

How do i check oil pressure?
Whats the best way to measure crank.

Cheers again creative

[JohnnyVtec]

[QUOTE=TendaWolf;1137398]haven't got pics yet. Crank case hitting was due to crankcase being put on unevenly but that has been fixed.

How do i check oil pressure?
screw an oil pressure gauge into the pressure switch hole.

Whats the best way to measure crank?
Out of the block.....