QuestionOk now I gotcha. However, how could that be the problem? If the drain is closed and no fuel leaks out? I mean if it were a faulty drain and its closed shouldn't it leak? I'm laughing because I almost think your having fun with me.
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Making sure I understand what your saying. I should open valve for the drain and blow in them? If it idles up then I have found what problem? Will that only add pressure to the float bowl, in doing so will that force fuel through the jets in hopes to unclog them? I will have to put use a vac line to hook to the bottom of the drains. I am unable to try it at the moment because we have a noise law here and the neighbors would get pissed at 10pm. lol..
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Pardon if this gets long but may save us some time going back and forth, figure its best to give you a bit of history.
I purchased this bike (89 Honda vfr400) about 2 months ago from a supposed "ex Honda Tech." Get the bike home (my first) it would run fine so it would seem after running it out of gas (sold with full tank) I noticed how much rust was in the tank. This led me to believe that surely some of that had to get into the carbs. So, I took off the tank did a proper cleaning and put some Kreem in the tank. Then I took off the carbs, a real pain being a V4. I took each carb apart one at the time. I first took apart the diaphragm and then the pistons, cleaned them and wiped them down. Reinstalled then took off the bowl removing the float and all the jets, check valve and seat cleaning the jets out and the gauze on the valve seats. Using Q-tips and steel wool on the bowls to remove the varnish. I reinstalled and it fired right up even without the choke, something it had never done. It revved nicely to redline and didn't notice any problems. But this is where it starts. I then took a water bottle and misted each header pipe at the head to make sure all cyl were firing. I sprayed the rear first 1 and 3, 3 would steam straight away yet 1 wouldn't. Then I went to the front 2 and 4. 4 would steam straight away and 2 would not. So this leads me to think I am not getting spark. So I pull the plugs on those two cyl and notice a strong spark (new plugs). I then reinstalled the plugs and hit the starter button. It fired up and ran just like before only I didn't put on the plug wires. It was / is running on two cyl. So, off came the carbs again. I didn't find any foreign debris this time they seemed to be clean. I reinstalled them and it fired right up again. Still though only on 4 and 3. I then for the sake of myself poured a touch of fuel down each carb throat of the two cyl that are giving me the problems. The revs went up each time. I then turned off the bike and pulled the plugs to see what the burn looked like. Surely rich which I would have thought.
I have pretty much exhausted all efforts I know to this point. I have purchased a new CDI and have noticed no change. I did this mostly because I could come up with nothing else. Money I know I didn't have to spend because I was/am getting spark to those cyl only they aren't firing. I am left to think this is a carb issue. What should I try?
Thanks for any and all advice you can offer.
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ok i had a suzuki 1400 intruder with the same problem crank the bike blow into each bad carburators drain line if bike idles up thers yur problem pass a small wire through each drain hose dont ope the drain line just do like i say ok,if it idles up that mean tey are not getting fuel not enogh suction ok try this and let me know i am at my shop right now doing an overhaul ill be here allnight ok.p.s please leave feedback for me we do this as voluteers ok. i will get you going ok hang in there ,
mitch
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no do not open the drain valve just blow in it like it is.leave it closed.do not open if it idles up thers yur problem ok let me know im here allright.
mitch
Answerim not laughing i get feedback on my answers from people like you whom i help just try this ididnt believe it either but it worked ,i honor your thought but it doesnt hurt to try something out of the ordinary it worked on a suzuki 1400 with the same problems, as to how dont no , just try it we can go from there ok im tryong to help i have a degre in mechanical engineering i wouldnt put my name out here like a fool but it worked for me if it doesnt i will help you get to the bottom of it ok.
sincerely,
mitch
