Compression Test Question (to high?)

[Kouki_Projekt]

I did a compression test on my ka24de and the results were:

Cylinder 1 & 2 - 200-210

Cylinder 3 - 193-194

Cylinder 4 - 190

I know the standard is like 170

but is this bad to have too much pressure?
Modified by Kouki_Projekt at 7:19 PM 4/12/2010

[WDRacing]

I'd run some seafoam through the engine oil and the intake. There are vids on youtube of exactly how this is done. Then once you have fresh fluids back in the motor, since you'll have to change after the seafoam, redo the compression test. Make sure the motor is at operating temp when the test is done for it to be the most accurate.

WD

[DuckyD]

We test compression on all our KA's and regularly see compression over 200psi.
As the engine is older, there is some carbon build-up and actually causes higher compression from when it left the factory. I wouldn't worry about. And if the car is running well, I wouldn't Seafoam it.

[WDRacing]

And if the car is running well, I wouldn't Seafoam it.

Isn't that like saying if the car is running well don't change the oil? I'm just wondering why you would suggest not using the Seafoam on a motor that clearly has excessive carbon build-up. If there is enough carbon on the pistons and combustion chamber to raise the compression I can only imagine how much gunk is on the inside of the intake manifold.

Any reasons why you wouldn't Seafoam?

WD

[DuckyD]

Isn't that like saying if the car is running well don't change the oil?

I was more speaking along the lines of "if it aint broke, don't fix it". The car is running well, why start screwing with stuff?
Using Seafoam can cause a number of small issue, including fouled out plugs (from gunk accumulating on plugs), clogged fuel injectors (from gunk being freed up inside fuel lines), oil leaks appearing (from gunk being removed away from oil seals, exposing the seal itself, which may not be in the best shape with the age).
If you want to SeaFoam it, do it. If the car is running well and actually has high-compression I would personally leave it alone.

[WDRacing]

I'd just run it through the vacuum line to clean out the intake/combustion chamber and valves etc. Then change the plugs and oil in case you had some Seafoam blow-by. If a gasket or seal develops a leak, change that dude out. I do understand the don't mess with it theory though and usually subscribe to it myself. Just this particular thing, I've always had really good luck with Seafoam.

I mainly asked in case you had some info I wasn't aware of. Learn something new every day ya know...

[DuckyD]

I mainly asked in case you had some info I wasn't aware of. Learn something new every day ya know...

Nope, nothing against SeaFoam. I just subscribe to that theory