compression test results for 2tg-eu

[anty109]

Ive just put weber dcoe side drafts on my 2tg-eu and cant get it to idle, so i checked the compression on was getting 100 psi across all 4 cylinders i know this is low. Whats it meant to be? and whats the service limit?

Could this be causing the car not to idle?

[ToyTA22]

Can you post your checking procedure i.e did you have wide open throttle, engine warm or cold. I presume this was a dry test, no oil used in plug holes. Details such as those can help us guide you.

[anty109]

throttle closed, engine cold, dry test

[ToyTA22]

Hi again. If you read most manuals, you need to hold/ wire throttle wide open. Means the engine is only sucking in small amount of air. This makes a big difference. Also do a dry test with wot then a couple of squirts of oil from a oil can, just enough to wet top rings, and take a reading of each cylinder with wot. If rings a good condition should only get about 10 to 15 psi change from dry to wet test.List both dry and wet readings on here so we can see what's happening.

[anty109]

Ok did a wot test results as follows

cylinder 1
dry 105
wet 125

Cylinder 2
dry 105
wet 120

Cylinder 3
dry 95
wet 120

Cylinder 4
dry 105
wet 120

Engine was cold and also the battery was running out of charge not sure if this could effect the results. also didn't see much change from having the throttle wide open.

[ToyTA22]

I'm surprised the small change with wot. The other thing is to check valve/ tappet clearances. My 2t with a few thousand ks on it has 148- 156 psi dry test. It only had a basic rebuild about seven years ago.
I tried searching for 2tgeu compression specs but unluckily don't have a manual or result as yet. But they do seem low.

[anty109]

Got the engine running the carbs were out of sync