zkush4

Hey guys,

I own a 1999 vmax 500 deluxe with 1100 miles. The sled is in mint shape and I bought it form the second owner. It has always started right up and run strong. The other day I took it out of the garage to fire it up for the first time since last season. It started up fine and I ran it for 15 minutes. After I ran it I though I would do a compression test on it. It turns our that both cylinders were exactly the same at 95 PSI. This has me worried because that seems very low especially because of the low miles. Could this be wrong? My throttle was not wide open, the engine was warm, and it hadn't been run in a long time. Im not an expert mechanic so let me know what you think. If it needs new rings I might just go on and sell it before its to late. Thanks any input is much appreciated.

RJ Gleason

Test must be done with both plugs out and throttle wide open and pull till the gauge stops rising.

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1980 Indy Trail 440 (for sale)
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yamadad4

your not that far off from normal and the fact that both were the same would be a positive indication.

lots of variable to consider in the equation. quality of equipment, length of hose on the tester, how tested, etc.

dont be miffed my the low reading, use a different tester in the right conditions, both warm engine and cold. rj had the right rundown. it would be out of the norm for your sled to have any issues based on the mileage and your current readings. only a leakdown test could verify anything different.