compression

  1. A

    Engine Compression Test Results?

    My wife’s CX-5 threw a cylinder 4 misfire code on her way home from work and she had to drive it home in limp mode. Knowing it’s high mileage (264,000) and she poorly maintained it (I’ve come home from overseas to find it bone dry on oil multiple times) I figured I’d run a compression test...
  2. S

    P0303 and failed compression test

    Hi there! P0303 (misfire cylinder 3) just popped up after 121,000 miles on my 2007 CX-7 (i.e. turbo). Very unfortunate since it was running so nice lately. Anything different lately? Well, new gas tank 30 miles prior (doubt that is the problem), and 2 tanks ago I put a can of gumout in the gas...
  3. M

    Compression Y U NO MAKE SENSE?

    Hello friends, I'd like to start by saying I need to buy everyone here a beer cause you all have been very helpful over the years. Today's Episode: Compression I did a dry and wet test, below are the numbers: Dry: 200/140/168/176 Wet: 215/150/192/192 I know 180ish across the board is where...
  4. C

    Head gasket installation need help!!!

    -2002 mazda protege5, stock -overheating when running for more than 15 minutes on the freeway -coolant in the coolant reservoir depleted unusually fast and there was back pressure that caused bubbling in the reservoir -engine bogging, probably due to coolant/water in the cylinders -the water...
  5. I

    NA engine compression

    Simple question really. Should an NA engine be high or low compression? I know everything needs to be lightweight, along with intake and exhaust upgrades. I just need to know about compression. Thanks for the help guys.
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