brethren
New member
Also I think its important the coil core is making a good connection to engine earth. Maybe watch out for rusty connections. When the engine is running on 2 cylinders have you tried partially pulling the mag side plug, and listen for the snap snap snap?
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yammitrip1
Member
Brethren, when the mag cylinder dies, it'll come back when I idle it or back off throttle. Every time I have shut it down, I always checked for spark and it's always got it!
brethren
New member
Just saw the reed thing, that's your problem for sure. The reeds should be fully closed ar rest.
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brethren
New member
At rest
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Sent from my SGH-I337M using Tapatalk
brethren
New member
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A couple of bucks
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It sounds like a breaker or fusible link. Not that there are any but it might get someone thinking outside the box.
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Was the arch up?
Take a picture off of the wall and lay the reeds on the glass. We're talkin a 1/32 arch.
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Yammitrip1, did you ever change the coil on the mag side? I thought you were thinking about it but did you ever do it?
Have you had this problem since you bought this sled? Regardless, have you looked at your power valves at all? I know this is unlikely, but I was wondering what would happen if a spring on the mag side power valve were missing or broken? I actually don't know how it would react, but it's worth a thought.
Have you had this problem since you bought this sled? Regardless, have you looked at your power valves at all? I know this is unlikely, but I was wondering what would happen if a spring on the mag side power valve were missing or broken? I actually don't know how it would react, but it's worth a thought.
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Take a different cylinder's reed valve off and compare. They should all be the same.
yammitrip1
Member
okay guys!!!! i am not getting closer lol. i just pulled all the reed cages, replaced the ones that werent resting totally against the cage, went out and took it for another ride! doing the same thing! runs good for the first few mins then dies out on the mag cylinder, yes i indeed changed the mag side coil with no difference, i also went through my carbs, pulled all the filters behind the needle and seat for the entry in fuel, all clean. I also drained my tank and took a look at the fuel filter, looks damn good and i took my fuel pump off and swapped with another one. here is a pic of the plugs after the third cylinder dies off. it goes from left to right, pto center mag
yammitrip1
Member
yammitrip1
Member
i have a video but do not know how to upload it
brethren
New member
The reeds are arched. If they are installed on the wrong side the tips will stay open. Have you made sure they are installed correctly? A friend of mine had reed problems and their fuel consumption was through the roof. Another possibility is the float level on the mag side carb, or fuel line, or something in the main jet circuit that's draining the float bowl. This would also explain the dark plug and fuel consumption issue. Keep plugging away, DON'T LET IT BEAT YOU, man against machine, man always wins!
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brethren
New member
One other think you have to be careful not to overtighten the reeds as not to bend them, and make sure loctite is used.
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yammitrip1
Member
All the reeds are good to go, tonight I am going to change out the stator and fly wheel. See if it does the same thing. I'll let you guys know tonight. Thanks for all the help though!!!!
Throwing out some ideas here, could it be the mag side crank seal? Taken the pipes out to make sure there's no mouse nest or something inside? Check the ohms of the spark plug cap. Try checking the connections on that mag cylinder coil and how well its grounded (rust?). Maybe the fuel pump is giving poor flow to that carb and its starving of gas?
yammitrip1
Member
Idk how I would test the mag side crank seal? I am pulling stator tomorrow. I just don't get why my plug would look wet if it was the mag side crank seal as I would more so think it would show lean/white? Pipes are clean, caps I swapped from different cylinders and did not follow, coils also. Throwing a different stator again tomorrow night, going to drive and report back. If it give me same results, going to pull work g harness completely out of it next. Then of that doesn't work, I'm going to check crank phase
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Stuffers in the cages?
brethren
New member
At one point there was gas in the air box, is it still there? Can you take a pictures of the reeds on the mag cylinder?
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Have you checked your float valve on that mag side carb?
I just had an experience where my viper was running really badly just after a carb cleaning. I was sort of shocked to say the least. I pulled the carbs and found two of the float valves, sort of jammed. They were stuck in an open position drowning those two cylinders.
I'm wondering if your mag side float valve might be hung open slightly. This would explain good wot, but a bog in the mid range. At the low range, it might just not be noticeable.
Just an idea.
I just had an experience where my viper was running really badly just after a carb cleaning. I was sort of shocked to say the least. I pulled the carbs and found two of the float valves, sort of jammed. They were stuck in an open position drowning those two cylinders.
I'm wondering if your mag side float valve might be hung open slightly. This would explain good wot, but a bog in the mid range. At the low range, it might just not be noticeable.
Just an idea.