[D33PU]

Just wanted to know how to do a compression test on a 04 r6?

 

[Agent4573]

take out all the spark plugs and connect the compression gauge to cylinder number 1. Hold the throttle wide open and crank the engine over 5 times. Read the gauge. repeat for cylinder 2, 3, and 4.

 

[JokerR605]

^^ sorry to bring up a old thread.. but I think you also need to disconnect the fuel pump?

 

[ChiefSmokeDawg]

You also need to make sure you have the piece inline on the gauge so it freezes at the position it read last vs just bouncing up and down lol

 

[redisdeadrideblue]

But really, you might as well do a leakdown test since you're in there and it will tell you more anyway.

 

[JokerR605]

But really, you might as well do a leakdown test since you're in there and it will tell you more anyway.

you got a link to a diy?

 

[MELK-MAN]

You also need to make sure you have the piece inline on the gauge so it freezes at the position it read last vs just bouncing up and down lol

that would be a shrader valve Yes. the gauge goes up n' up vs. bouncing.
As far as unhooking the fuel line, it's kind of silly to attempt this without just removing the tank and airbox, but whatever. You may need to use something to hold the butterflys open on the 3rd gen (fly by wire, they don't always open when you twist grip)
Looking for consistency between the cylinders. If you have low or high readings, some gauges can read a bit differently too. 15-20psi differences in some gauges. i have a $35 autozone one that reads 10psi lower than my friends $200 Snap on.. so i just keep that in mind

agree about a leakdown. do both, or ld is better. Just a little more in depth and little more "know how" needed. comp test is pretty darn easy, gauge is cheap.




DANG is this an old thread.. lol