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Post by 1quikvento on Sept 24, 2011 10:37:13 GMT -5
I was doing general maintenance to my triton this morning, and when I checked my compression I got a reading of only 52 psi.
I am quite baffled because my scooter starts,runs,idles, and drives very smoothly. Even at wot I top out at about 51.5 mph.
What am I missing? I pull the plug, install the tool, leave the kill switch off and crank it over via electric start AND kick start enough times for the crank to complete at least 7 or 8 full strokes.
Weird...
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Post by 1quikvento on Sept 24, 2011 10:46:04 GMT -5
It wasnt at full operating temp when I checked tho. It was rather like room temp. Would it give a reading like that or ?.....
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Post by 90GTVert on Sept 24, 2011 10:47:19 GMT -5
Hold the throttle wide open is what you're missing there, but I think your issue is with the gauge and not the motor.
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Post by ososlow on Sept 24, 2011 12:20:47 GMT -5
or the adapter is not sealing all the way in the spark plug hole
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Post by 90GTVert on Sept 24, 2011 12:37:07 GMT -5
My adapter has got a rubber o-ring to help it seal and I ended up removing that and using a washer from an old spark plug instead. I got weird readings at times before that, seems to be fine since.
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Post by jmkjr72 on Sept 24, 2011 16:50:56 GMT -5
or you have one of the wonderfull harbor freight gauges that read real low
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Post by reveeen on Sept 25, 2011 2:43:12 GMT -5
I am quite baffled because my scooter starts,runs,idles, and drives very smoothly
FYI: an engine, 2 cycle, or 4, NEEDS 90psi MINIMUM, to run. It may *think* about running @ 80psi (and will run with/on starting fluid), but to sustain "running" on gasoline, you NEED 90psi.
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Post by Thebatman on Sept 25, 2011 7:53:59 GMT -5
or you have one of the wonderfull harbor freight gauges that read real low That would be ME.... :stumped:  |
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Post by jmkjr72 on Sept 25, 2011 10:21:26 GMT -5
or you have one of the wonderfull harbor freight gauges that read real low That would be ME....  on a few of the forums ive been on there have been bunches of people who bought them and cant get over 90 psi on a fresh build but yet they go by some one who has one from sears matco or the parts store and they have 120+ heck there was one guy who i helped in person it wouldnt read over 50 psi it was running and i put min on and it was right around 100 psi |
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Post by Thebatman on Sept 25, 2011 11:08:38 GMT -5
I also have a "sears" comp tester. I think it's off also. :bfg:
At least the sears one does read 15-20lbs more than the H.F. one. :censored: I'd love to see a GOOD tester to compare.(OR a GOOD scoot to compare my tester with)
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