Compression

[Heartattack_3]

How much compression should a 95 YZ250 have just rebuilt it and it just dont seem right. Whem trying to start to it just makes like a spuff out of the exaust but does not start it was running fine yesturday and even started up this morning and when it died I let it sit for awhile and it started again let is sit again for about an hour and still does the same thing any suggestions thanks for your time.

 

[IndyMX]

What are you getting on your compression tester?

 

[Heartattack_3]

after kicking it over about 5 times with tester conected getting right at 180 lbs per square inch

 

[IndyMX]

Doesn't sound too bad.. What kind of numbers were you expecting?

 

[Heartattack_3]

Well I wasn't to sure untill I tested it it just seemed week but I have scence found the problem the proplem the timeing had went way off but i really thank you for looking thanks again

 

[IndyMX]

No problem at all.. That's what we're here for!

 

[hot125mod]

thats right about what a 250 is supposed to be. A buck 25 is about 160, shoot my old 125 was 190 kicked like it too wow

 

[GarbatyA4]

I checked my compression when it was 0deg celsius in the garage and I got 190PSI w/ 15 hours on the rebuild.

So as it gets warmer, you get better comp right? :)