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How many seconds is a few?

  • Thread starter Thread starter beby99
  • Start date Start date
B

beby99

Guest
I noticed my Suzuki service manual says that during a compression
test, to crank the engine for a few seconds. So how long
is a few? How long do you guys crank the engine to get a accurate
reading?

Just curious, thanks.
 
Re: How many seconds is a few?

Three

Earl :-)

beby99 said:
I noticed my Suzuki service manual says that during a compression
test, to crank the engine for a few seconds. So how long
is a few? How long do you guys crank the engine to get a accurate
reading?

Just curious, thanks.
Click to expand...
 
It doesn't really matter, just do it the same for all cylinders. You'll see your gauge even out too.

That said, I am completely sure that a few is 3.6148 seconds, be sure not to miss that number by more then .001.
:P
 
Thanks guys,

If I crank for just a few seconds (3 to 5) I get about 15 psi less
then when I crank for 10 seconds. Still within limits but want to
know which is the more accurate.
 
Compression numbers are never really accurate, though the highest number you get is probably the most accurate. Temperture of the engine, and air as well as a dirty air filter, and speed of the starter will all change the results day to day, and certainly bike to bike. A compression test is ment to give you values that can be compared across cylenders, all should read close to the same.
 
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