Should the throttle be open or closed when testing. I checked mine closed only gets around 80-90psi but if I hold throttle wide open I get around 150-160?
You should be able to get a max reading with or without the throttle open. It may take a few more kicks with the throttle closed but still should max out. Keep kicking until the gauge stops moving.
I got a xr100 1987 are these supposed to be easy to kick over ? Mine kicks over pretty easy with not much resistance am hoping the compression isn’t low
100cc will kick over fairly easily. Remember, they're made for 10-12 yr olds. If you don't have a compression gage, take the spark plug out and press a finger tightly over the hole while somebody kicks it over. Good compression will blow by your finger. Not an exact measurement but if it won't blow by your finger you know it's too low to run.
@@gordonbeck7789 yeah I wonder how considering the one I have is a 1987 how it runs so good like if it’s been rebuilt or if it’s just cause it’s a Honda
@@troyholland3436 I use 10w40. But you could use 10w30 or even straight 30w in a pinch, just replace it as soon as possible. These are extremely durable machines and aren't real finicky about oil and gas types. The biggest issue I see with these is gummed up carbs from extended non-use so always use sta-bil and run the carb dry before parking it for extended periods.
Should the throttle be open or closed when testing. I checked mine closed only gets around 80-90psi but if I hold throttle wide open I get around 150-160?
You should be able to get a max reading with or without the throttle open. It may take a few more kicks with the throttle closed but still should max out. Keep kicking until the gauge stops moving.
I got a xr100 1987 are these supposed to be easy to kick over ? Mine kicks over pretty easy with not much resistance am hoping the compression isn’t low
100cc will kick over fairly easily. Remember, they're made for 10-12 yr olds.
If you don't have a compression gage, take the spark plug out and press a finger tightly over the hole while somebody kicks it over. Good compression will blow by your finger. Not an exact measurement but if it won't blow by your finger you know it's too low to run.
@@gordonbeck7789 yeah I wonder how considering the one I have is a 1987 how it runs so good like if it’s been rebuilt or if it’s just cause it’s a Honda
@@troyholland3436these things will literally run forever with basic maintenance and yearly oil changes.
@@gordonbeck7789 would you recommend 10w30 or 10w40 ?
@@troyholland3436 I use 10w40. But you could use 10w30 or even straight 30w in a pinch, just replace it as soon as possible. These are extremely durable machines and aren't real finicky about oil and gas types. The biggest issue I see with these is gummed up carbs from extended non-use so always use sta-bil and run the carb dry before parking it for extended periods.
Do you need an exhaust/carb on for this?
No. It's a test of valves and rings. Carb and exhaust aren't needed.