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how much gas should I put in the cylinders when plugs are out to see about fuel issue

  • Thread starter Thread starter supergrafx
  • Start date Start date
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supergrafx

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I saw in another post that someone said put a few drops of gas in each cylinder to see if start up woes might be fuel related instead of electrical. I have spark on all four plugs and my timing is surely correct me thinks. I just want to see if it is funky carbs or the petcock. I'm concerned what a few drops would amount too. I would have thought that the 4 cylinders would need a little more than a few drops. I'll be checking the voltage on my coils tonight as well for those who have been kindly helping me out in my main and prior thread. Finally got some watch batteries for my radio shack multimeter! :clap:
 
A couple of cc's is more like it - about 1/2 a standard eyedropper
 
Thanks Big T. I'll do the test tonight and report back in my main thread. When I pulled the original plugs before putting new ones in after trying to start up, I don't think the plugs were wet, so I'm thinking fuel might not be getting into at least two cylinders. The other two looked rich and possibly a little wet, so that's why I'm thinking two cylinders were possibly getting fuel while the others were not. However, after reading many threads, I've heard it is possible to run the engine with only two cylinders, someone even said they got it running off of one.
 
Yes, it is possible to get your bike to run on 2 cylinders, and even just barely running on 1.
I had pulled my carbs to clean them, tinkered with the floats a whole lot because the plugs in two of the cylinders (the two that weren't running) were dry and it didn't seem like they were getting any fuel at all.
When I did some digging I found that two of the plug caps were mixed up so two plugs were always firing at the wrong time (the two dry cylinders) I swapped the plug wires and the bike fired right up on all 4 cylinders even though two of them appeared to be completely dry.
If you're getting spark, I'd try to check and see if your wires are in the proper order. I know it's a simple thing, but I overlooked it and spent days trying to figure out what was wrong. (Proper order as far as I know is that the left coil fires 1 & 4, right coil fires 2 & 3)
And I've heard that you can get spark when pulling the plug and grounding it, but under compression your spark might be too weak to fire, so you might have to check that. I'm not quite sure how, but I know that most guys on here have done the coil relay mod to eliminate that issue.

Hope that helps...keep us posted
 
Squirt some "start you barstard" into the air box .If it fires , your problem will be fuel related.Don't try to run the engine using this crap,just use it to diagnose.Goodluck.Cheers,Simon.;)
 
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