Tapping/Knocking Sound Coming From Engine

[neo]

Had this happen to me car ran fine and sounded like lose tappits it was 3 bent rods :(

[IH8TOADS]

There's only one guy in Melbourne with the old Dongle I know of and that's Nick aka "The Wog" XTC Performance. Is this him?

[Buf-Phoon]

nooooo

[straughsberry]

Run. Turn around and run and don't look back lest you turn into a pillar of turd.

[Buf-Phoon]

Fark you Steph , I now have to change me Tenna Lady

Now there's a P@@

[Brendan XR6-T]

I have this tapping noise also in roughly the same place you have mentioned. But it only seems to turn up after the car is warmed up after a 15min drive or so.

Is your car similar or does do it do it when its cold aswell?

Which test is more accurate a leak down test or a compression test?

Edited 22/07/10 06:37 AM by Brendan XR6-T

[Gloo]

Compression test is for well... Compression, it will only check to make sure your pistons seal properly and that the piston reaches all the way up. So if you got a bent rod, the piston wont move up as far and hence, giving less compression. Also if you have a very old and worn engine, the rings might be cracked or the bore worn. Can all cause different readings. I think the normal for a B series was 195psi. that's off the top of my head, dont quote me.

I dunno if a leak test is a compression test or if different. Maby it only checks if the piston seals right and not compression.

I know a compression test is 100% accurate for its reading. I havent known any one to get less that optium readings in a car less that 250 thousand kays, and being a big straight 6, they dont rev hard and apprenty these engines dont wear much any way. You will get a read out like

Pot 1 : 190

Pot 3 : 190

Pot 2 : 98

Pot 5 : 102

Pot 4 : 190

Pot 6 : 132

I dunno the exact order of the pistons, I know there not 1 to 6 in order. A read out like that would surgest 3 f*cked pots, 2, 5, and 6.

[straughsberry]

Fark you Steph , I now have to change me Tenna Lady

Now there's a P@@

Teena lady, is there anything they can't do?

[82CNT]

God dont take it anywhere near ford!

[Guest EGOXRT]

Sounds like a case of the watcha ma call it's! Dyno wog specialty.