Worried: Another low compression engine question
Sorry to bring back my old thread but I have the update. Finally got a valve adjustment done, and redid a compression test, this time with injectors unplugged as Billman said to do. Same similar results, 165, 165, 175, 177. Still very consistent, and low. Mechanic said the head seemed to be in good shape from what he saw during the valve adjustment. I guess its the bottom end then, perhaps it really is worn out rings. Yet the car runs very strong and no signs of bad rings or other. This isn't looking good 

Originally Posted by leoxle' timestamp='1392346840' post='23015007
Sorry to bring back my old thread but I have the update. Finally got a valve adjustment done, and redid a compression test, this time with injectors unplugged as Billman said to do. Same similar results, 165, 165, 175, 177. Still very consistent, and low. Mechanic said the head seemed to be in good shape from what he saw during the valve adjustment. I guess its the bottom end then, perhaps it really is worn out rings. Yet the car runs very strong and no signs of bad rings or other. This isn't looking good 

With the leak down test kit you can pinpoint where the air is escaping. That's if there's even a large enough percentage leak to merit looking. My guess is that you'll turn out fine. I highly doubt that all of your ring/ cyl walls could be bad, but who knows.
If you do have air escaping, simply pulling the oil pan an looking up you'll be able to partially see the cyl walls and area around the rings. A 3' or so length of hose to the ear is a great way to find air/vac leaks.
If you do have air escaping, simply pulling the oil pan an looking up you'll be able to partially see the cyl walls and area around the rings. A 3' or so length of hose to the ear is a great way to find air/vac leaks.
With the leak down test kit you can pinpoint where the air is escaping. That's if there's even a large enough percentage leak to merit looking. My guess is that you'll turn out fine. I highly doubt that all of your ring/ cyl walls could be bad, but who knows.
If you do have air escaping, simply pulling the oil pan an looking up you'll be able to partially see the cyl walls and area around the rings. A 3' or so length of hose to the ear is a great way to find air/vac leaks.
If you do have air escaping, simply pulling the oil pan an looking up you'll be able to partially see the cyl walls and area around the rings. A 3' or so length of hose to the ear is a great way to find air/vac leaks.
http://youtu.be/WgrfT0LFMhc
This is a great vid. Look in the stickies to find the leak down test procedure on our Hondas. I think most just pull the vc to line up tdc.
This is a great vid. Look in the stickies to find the leak down test procedure on our Hondas. I think most just pull the vc to line up tdc.
http://youtu.be/WgrfT0LFMhc
This is a great vid. Look in the stickies to find the leak down test procedure on our Hondas. I think most just pull the vc to line up tdc.
This is a great vid. Look in the stickies to find the leak down test procedure on our Hondas. I think most just pull the vc to line up tdc.
Bringing my thread back AGAIN but I have more updates. Never got around to doing the leakdown test (was supposed to get it done this past week but couldn't get a hold of a tester) but I do have some good news. I was reading reviews on the compression tester I had been using, and just about EVERYONE who had used it complained about it having a bad design and that it reads much lower than other compression testers. Its the U.S. General compression tester, I bought it from Harbor Freight. That being said, I went to autozone and borrowed their OEM tester and I got:
210, 210, 210, 215
So MUCH higher than my previous numbers. Are those acceptable numbers? I'm just glad its not any lower, but should I be at all worried that its not any closer to 240? I might have been freaking out over nothing. I didn't know my tester was bad and I did use a different one before but I guess that one was bad as well lol.
210, 210, 210, 215
So MUCH higher than my previous numbers. Are those acceptable numbers? I'm just glad its not any lower, but should I be at all worried that its not any closer to 240? I might have been freaking out over nothing. I didn't know my tester was bad and I did use a different one before but I guess that one was bad as well lol.
I am so relieved to know that my engine is alright. Thought I would be rebuilding it haha. Such an unbelievable relief when it was something so simple.



