Other 2009 Honda CRF100F compression

Y

yukongirl

I am looking into purchasing a 2009 Honda CRF100F second hand and was wondering if anyone knows what the compression should be when I do a compression test? Can't seem to find it on the net.
Any and all help is much appreciated!
 
SRAD97750

SRAD97750

Moderator
Staff member
A leakdown compression tester is $45-100 and requires an air compressor.
This is the only way to accurately test compression in a 4 stroke engine. It's not about the PSI total, but how fast it leaks off. The tester will have green, yellow, and red bands showing if it's good or bad.

Again, a compression reading is useless without the last compression reading taken months before. Compression can only be calculated in a "change over time" format. The number is useless on it's own. -BIG DAN:thumb:
 
Y

yukongirl

Thanks for the feedback! Also makes sense about the compression tester (and why I couldn't find any information on it)... guess I'm just used to working with 2 strokes.
 
Top