Going to do compression test need to know what it should be at

**windyctyaudi** · 04-18-2008 06:04 PM

What is the compression for an 1.8T suppose to be at I'm going to do a compression test on my car this weekend and I want to know if my head gasket is bad or if my turbo is going out on me.

**dirtybrd** · 04-18-2008 06:12 PM

I think between 180-195 psi, but I could be mistaken.

**A4ringedONE8T** · 04-18-2008 06:36 PM

I got 160 by the 3rd crank and you should max out around 180-190

**FourRings80** · 04-18-2008 08:07 PM

compression test

http://www.audigeeks.com/forums/index.php?topic=2769.0

**windyctyaudi** · 04-18-2008 08:08 PM

Thanks for all the help guys

**absolutegtr** · 04-18-2008 10:04 PM

Is it safe to pull the sparkplugs on a warm engine? I wouldnt want to risk stripping the threads....

I plan on doing this tomorrow or Sunday

**windyctyaudi** · 04-18-2008 10:36 PM

Originally Posted by absolutegtr

Is it safe to pull the sparkplugs on a warm engine? I wouldnt want to risk stripping the threads....

I plan on doing this tomorrow or Sunday

I dont know if its safe but i have done it many times and never had any problem.

**mike-2ptzero** · 04-19-2008 10:17 AM

Originally Posted by absolutegtr

Is it safe to pull the sparkplugs on a warm engine? I wouldnt want to risk stripping the threads....

I plan on doing this tomorrow or Sunday

Yes it is fine if the motor is just up to running temp, you dont want to pull the plugs after the car has been ran hard.

Just let the car warm up at idle till the coolant temps are at normal readings. Then you can pull the plugs and do your CR test.

**absolutegtr** · 04-19-2008 01:26 PM

Just did the compression test. Seems like GREAT results.

Motor has 99,515 miles on it.

195, 195, 195, 200 respectively

Sparkplug electrodes were in great condition as well

Audi FTW

**mike-2ptzero** · 04-19-2008 01:40 PM

Originally Posted by absolutegtr

Just did the compression test. Seems like GREAT results.

Motor has 99,515 miles on it.

195, 195, 195, 200 respectively

Sparkplug electrodes were in great condition as well

Audi FTW

Good CR, might be just a little high which is usually caused by carbon build up. Better that then lower then stock readings.

**absolutegtr** · 04-19-2008 09:37 PM

Originally Posted by mike-2ptzero

Good CR, might be just a little high which is usually caused by carbon build up. Better that then lower then stock readings.

I guess I should run seafoam through it...but it is just one of those "things" that I dont believe in...lol

As for carbon buildup....I ALWAYS atleast once during any trip, go WOT...just to prevent carbon buildup, lol....<-----thats one of those things that I believe in, lol