compression check

[AliasNeo]

hey, well when i last did compression test i turned the motor over bout 7 times? is this correct or how many times should it been turned over?? also what is standard number?

 

[lonewolf]

Should be turned over twice for a good reading. Should be between 160-200psi, depends on engine and its condition. Hope that helps, I have a howto archived somewhere if you want I can post up a link.

 

[AliasNeo]

well cranking it over twice wont really help because the motor is A 4 stroke and would need to be cranked at least 4 times to get 2 compresion reading

 

[LatinEM2]

http://www.c-speedracing.com/howto/comptest/comptest.php

 

[AliasNeo]

thanks, well i did what c-speedracing.com told me to do which differs a bit from what the book syas to do... but i cranked it over 5 times like speedracing said and i got as follows
CYL:
1: 185.5 PSI
2: 183 PSI
3: 179.5 PSI
4: 199 PSI

these are averages done i did the compression twice on each cylinder and took the average... can i still boost this motor?

 

[slowhatch]

http://www.c-speedracing.com/howto/comptest/comptest.php

does removing the 15a fuse cut the power to all honda engines? or just the b18?

 

[AliasNeo]

does removing the 15a fuse cut the power to all honda engines? or just the b18?

says on the fuse box that the 15 amp is FI E/M my cel light came on when i pulled it lol

 

[LatinEM2]

It works on all Honda's...Alias are u doing a compression test with the car running???

 

[sidewayzinCA]

dont you need to take the spark plugs out to do a compression test...how could it be running?

 

[slowhatch]

yea, or you can just take out the one then turn it over 5times then put it back in and take out another do it to that one etc. thats what i did a couple hours ago and got 1 - 170, 2 - 170, 3 - 175, 4 - 175

 

[AliasNeo]

well no i didnt have the car running, i pulled all spark plugs and did the test by cranking the motor over 5 times with the starter...

 

[gearbox]

i hope you also unplugged the injectors. and you know the throttle has to be fully open when cranking right?

 

[AliasNeo]

i didnt unplug the injectors... if u disconnect the fuse, the injectors wont go... i did have WOT...

 

[slowhatch]

i hope you also unplugged the injectors. and you know the throttle has to be fully open when cranking right?

what would happen if you didnt have the throttle at wot?

 

[AliasNeo]

it doesnt get enough air to show good compression results...