Spark gap tool how to use and compression Normal numbers?.

[Revvy Kevvy]

So its above freezing outside and the sun is actually getting into the sky, I can take the bike outside instead of trying to kill myself in a room full of super rich exhaust.

She runs, but not well. I think the right spark plug is not firing but I have purchased this cool little spark plug tester. I set it at 3mm, I get the occasional spark. If I wind it to 1.3mm I can see a reliable spark. Thats roughly double the spark plug itself at 0.8mm. I have fixed so I get a spark on both sides but I am curious, how do you use this tool on a motorcycle. On the youtube it shows modern cars with their high powered ignition systems and its set to 3-4mm but mine is a little old points system so I dont expect to have a super strong spark?

Would you set your spark tester also to 1.3 or do you set yours different.

I ran the compression tester at warm, 110psi is left, Right is about 140psi. I suppose this will work as everything I find says about 140psi. Left is a little low I guess but it runs and thats a good start. Once question, while it runs on the left side it actually blows gasoline out the carburetta? I am sure its not supposed to do this but I cannot understand how. If the valve was wrong I would get crappy compression so I am thinking its a timing problem.


Did anybody ever see fuel being blown out the carburetter while the engine runs? Hold your hand in front of it and your hand will get wet with fuel...

Otherwise, we move forward. Hope to see you all on a ride in the xs400...

 

[Revvy Kevvy]

Ok, to close this thread, I found a chapter in the manual where is actually tells you how to set up and how to use a spark gap measuring tool. Chapter 6, 6.1 Ignition coil spark gap test. Minimun spark gap is 6mm (0.24 inch) and since mine is only operating at 1.3mm I have determined the coils are not funcitoning very well. FYI, the secondary coil resistance in one of mine is also very wrong.

So, picture shows section in the manual about using the spark gap tool and now I am hunting new coils. I will probibly use some from a chinese motorbike as many of them still use a points system and so will be cross compatible.

Close the thread, I hate it whan folk dont close the thread when they find the solution. I guess its from years of working on helpdesks for cyclotrons.

 

[CaptChrome]

I guess its from years of working on helpdesks for cyclotrons.

I have found that the cyclotron help desks are the very worst. Nine out of ten times I go to my community cyclotron to do some sub-atomic particle testing it is down. This kind of thing really puts a damper on the whole quantum mechanics research hobby of mine.

 

[Revvy Kevvy]

I have found that the cyclotron help desks are the very worst. Nine out of ten times I go to my community cyclotron to do some sub-atomic particle testing it is down. This kind of thing really puts a damper on the whole quantum mechanics research hobby of mine.

Just call me up next time you have a issue with your cyclotron and I promise you I will have it running in a jiffy. I also fix proton packs from ghost buster equipment so I can sort you for that too. FOC since you have been so helpful with my bike.

I ran the cyclotron help desk for 13 years almost 24/7....oh some stories I can tell you.

 

[CaptChrome]

Just call me up next time you have a issue with your cyclotron and I promise you I will have it running in a jiffy.

FOC since you have been so helpful with my bike.

Wow, thanks!

To me, a lay person, the hypoducinators that are used in these things are the biggest issue. The ones that are produced in Upper Luanna are absolutely crap. Of course my local cyclotron uses one of those. I wish we had one with the older technology using dumaflatchey generators, those things are bulletproof.

Ghost Buster equipment has always fascinated me, but I just don't seem to find the time to pursue it. A guy in my neighborhood has some though, and he always attracts a crowd of the neighbor geeks when he brings that stuff out of his garage - like flys on sh*t. Of course I am one of them.