I did a search.....but to no avail.......how do i check the compression on a H23 non vtec?

 

this is what i did.
Car should be warm but not too warm cuz you dont wana ruin the plug threads when removing the spark plugs.
remove all 4 spark plugs.
i unclipped my injector so no fuel would enter the cyl's
Install compression guage to cyl #1
Crank engine over 4-5 times( hold the throttle Wide open)
repeat on cyls 2,3,4
record reading.
probably around 180psi for your h23

 

thats the problem...the motor wont turn over enough to start....so it wont be warm.

 

the #'s will be a little lower but go ahead and try it. ( fix your starting problem 1st)

 

well i did the compression testing.....number 1 is at 180.....2,3,4...nothing...so im assuming the valves are bent...correct?

 

try 2,3,4 again, make sure its threaded in there snug.

 

just take out the fuel pump fuse under the steering wheel. it'll be easier than trying to unhook the injector clips. i doubt that your not getting comp. on 3 cylinders. are you sure the threads aren't stripped out for the plugs? it should thread in there and be a bit snug like a spark plug, but finger tight. on my h23 i had 170 across the board.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h23civic &raquo;</TD></TR><TR><TD CLASS="quote">just take out the fuel pump fuse under the steering wheel. it'll be easier than trying to unhook the injector clips. i doubt that your not getting comp. on 3 cylinders. are you sure the threads aren't stripped out for the plugs? it should thread in there and be a bit snug like a spark plug, but finger tight. on my h23 i had 170 across the board.</TD></TR></TABLE>

ill try that..but not getting fuel...wont that make the motor not want to crank over at all? in not that hnda smart yet. i know all the basics...but when it comes to motor internals...im a novice..soo all this is learning for me

 

You pull the fuse so you dont inject any fuel into the cyls while doing the compression test.( if fuel gets into the cyls it will make the a/f ratio very rich and be hard to start back up after the test) The starter motor is what turns the engine over to start it, the engine doesnt need fuel or air to turn over, but to run it does. ok?

 

aighty. imma do that first thing tomorrow. i still dont know how the hell i dont have compression on 4 of the cylinders. ive never heard of it being that bad before.

 

ive never seen it but i dont have that much experience, does the guage you bought use a rubber hose type or is it a straight piece, just make sure and snug up the connectors on the gauge after each cyl. you should be getting some psi

 

it was a rubber hose that had a high pressure air connector to the pressure guage.

 

ya mines like that too, after screwing it in and out the little adapter gets loose so that may be why you got 0psi.

 

well..ill do it again tomorrow cuze i was using my next door neighbors. and its to late to go do it now. but i will. im planning on a motor swap anyway.....but thats 2 months away. and i kinda need the car to get back and forth to work and what not.

 

well....the problem has been solved. My buddy at work has a complete H23 head that he is selling me for 100 dollars. also changing the timing belt and tensioner..along with the gaskets and oil etc etc etc.