Thread: 50cc Redcat not running
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#1 50cc Redcat not running
- Join Date
- Nov 2016
- Location
- Nevada
- Posts
- 4
11-11-2016, 03:01 PMI just got this quad and the previous owner said the starter was bad. He had pulled it off. Well after testing the starter, it is fine so I reinstalled it. I think I found why it won't run when I put the starter on. I get no spark.
I guess I can't post a picture from photobucket for whatever reason. Anyway one side of the magneto wiring is black and looks burnt the other side looks copper colored like i guess it should. Does anyone have a troubleshooting guide to follow to see where I should be getting power, spark signal etc. to get this thing running?
Thanks
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#2 Re: 50cc Redcat not running
- Join Date
- Nov 2016
- Location
- Nevada
- Posts
- 4
11-11-2016, 04:06 PMWell after looking at website devoted to selling Chinese quad parts I am thinking that the magneto is not the problem. The new ones they sell are the same design/colors so Back to square one.
Does anyone have a guide to follow along to trouble shoot where my no spark issue is?
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#3 Re: 50cc Redcat not running11-12-2016, 06:11 AM
Ruled out the basics 1st... ie. Bypass Safety s/w & lock s/w using jumping wires... use NEW spark plug for test...
ohms of coil... http://sanxin.com.cn/info5/index.asp?id=20 | ohms of cdi... http://sanxin.com.cn/info5/index.asp?id=10
Last edited by humanbeing; 11-12-2016 at 07:58 AM.
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#4 Re: 50cc Redcat not running
- Join Date
- Nov 2016
- Location
- Nevada
- Posts
- 4
11-19-2016, 04:13 PMI pulled the pin off the cdi and now I have spark. I went through the carb, it seems fine but I think I figured out the issue.
Low compression. I had to find an adapter from my tester to the plug hole but I only have 15-20 psi compression. I sprayed some lube (wd-40) in the hole and it didn't change the compression. How much should it have??
Pretty much a pile of junk at this point?? Needs a motor rebuild??
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#5 Re: 50cc Redcat not running11-19-2016, 10:14 PM
http://www.dansmc.com/compression_test.htm
72cc barrel kit maybe the quick solution IF others in usable state ... Anything beyond that is wasting money/time. Another healthy horizontal engine also not that expensive...Last edited by humanbeing; 11-20-2016 at 01:37 AM.
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#6 Re: 50cc Redcat not running
- Join Date
- Nov 2016
- Location
- Nevada
- Posts
- 4
11-26-2016, 03:53 PMSo I was doing some reading and talking to a buddy. He told me to check the valves. Because spraying lube in the cylinder should help seal the rings if that was the reason for no compression. So I checked the valves and couldn't get any feeler gauge in. I adjusted them to .002 inches because I don't have a metric gauge. It is about .05 mm, which is in the middle of numbers I have found to set it.
Anyway now I have 60 psi on compression. I know not right but a lot more than I had. Then the battery went dead so I quit for the night and started drinking beer. Any suggestions?
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