Compression Test DIY (Video)
#1
Three Wheelin'
Thread Starter
Compression Test DIY (Video)
Ok, well just like the title states, I wanted to do a compression test on my car and decided to make a video.
A couple side notes. The compression of all cylinders should be within 10% of each other. The baseline of the J32a2 (Type S) is a max of 240 I think, if someone can verify this for me I'd appreciate it.
The compression gauge was purchased from Advance Auto Parts for $26.
If you have any questions just let me know.
http://www.youtube.com/watch?v=d5gy8UcW5YM
A couple side notes. The compression of all cylinders should be within 10% of each other. The baseline of the J32a2 (Type S) is a max of 240 I think, if someone can verify this for me I'd appreciate it.
The compression gauge was purchased from Advance Auto Parts for $26.
If you have any questions just let me know.
http://www.youtube.com/watch?v=d5gy8UcW5YM
#3
Three Wheelin'
Great vid. If any members have a rough running engine and you have proven every cylinder is getting fuel, spark and correct time (timing belt) then this is the next step. Low compression values can mean burnt valve, blown head gasket, hole in a piston, bad ring or even a cracked block. The six compression values can be written down and compared. Hope I didn't forget too much.
#4
Three Wheelin'
Thread Starter
Thanks, Ive been having engine problems and found my compression to run from 200-210 on all cylinders so I'm kind of baffled.
Oh ya, don't forget to watch the video in HD too, this way you can see how dirty my engine actually is.
Oh ya, don't forget to watch the video in HD too, this way you can see how dirty my engine actually is.
#5
Three Wheelin'
Thread Starter
Great vid. If any members have a rough running engine and you have proven every cylinder is getting fuel, spark and correct time (timing belt) then this is the next step. Low compression values can mean burnt valve, blown head gasket, hole in a piston, bad ring or even a cracked block. The six compression values can be written down and compared. Hope I didn't forget too much.
Nope, those were all good additions. I was going to show how the compression increases if you would add a little oil to the spark plug area but I didn't have the patience to do that.
#7
Suzuka Master
iTrader: (1)
![Dunno](https://acurazine.com/forums/images/smilies/dunno.gif)
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#8
Three Wheelin'
Thread Starter
Nice vid pits... Those numbers seem within normal limits and consistent. Maybe one of the other members like NVA-AV6 can chime in with their experience in this regard. He may be able to point you in a direction not considered to this point. Hell, depending on how far he is from your location, it might be worth it to pay him a visit for an accurate diagnosis.![Dunno](https://acurazine.com/forums/images/smilies/dunno.gif)
![Dunno](https://acurazine.com/forums/images/smilies/dunno.gif)
What I meant I am baffled about is I am having a loud loud tick from the engine after it was rebuilt a few months ago. I am baffled that I am getting such good compression readings when I am guessing that I have a head issue.
I just didn't clarify properly.
#9
Suzuka Master
iTrader: (1)
![Thumbs Up](https://acurazine.com/forums/images/smilies/thumbsup.gif)
Email NVA-AV6, he's a J-series oracle and could benefit your cause.
![Thumbs Up](https://acurazine.com/forums/images/smilies/thumbsup.gif)
#10
Three Wheelin'
Thread Starter
Ahh, one thing I forgot to mention in the video is that you want to hold down the gas peddle all the way down while you crank the engine. Not sure if the mods can include this in my first post on this thread.
Thanks
Thanks
#11
Whats up with RDX owners?
iTrader: (9)
Nice vid ![Thumbs Up](https://acurazine.com/forums/images/smilies/thumbsup.gif)
BTW, the measurements are PSI
![Thumbs Up](https://acurazine.com/forums/images/smilies/thumbsup.gif)
BTW, the measurements are PSI
![Tongue](https://acurazine.com/forums/images/smilies/tongue.gif)
#12
Three Wheelin'
Thread Starter
Haha, ya you caught me when I went blank at the end of the video and my mind was thinking foot/lbs cause I was thinking of my torque wrench.
Damn, I was hoping no one would have noticed, lol.
Damn, I was hoping no one would have noticed, lol.
#13
Whats up with RDX owners?
iTrader: (9)
![rofl](https://acurazine.com/forums/images/smilies/rofl.gif)
Its cool.
#15
Blown is Best
#18
Blown is Best
The purpose of opening up the throttle all the way is to provide unrestricted intake into the cylinder. With the blower removed, you get that by default.
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