84 phazer problem

The Phazer apparently had marginal engine to frame ground capacity. After an amount of time and some slight corrosion, the ignition would cut out when the warmers were on. This includes the factory installed warmers on the electric start (Deluxe) model. This usually happened after the sled was a few years old. It's possible that some aftermarket warmers have a higher draw and will always cause the problem. The cure is to add a ground wire from the motor to the frame. Probably a good thing to do on all Phazers to insure full ignition capacity, although I would guess that Yamaha corrected this somewhere along the way on later models. There may have been a service bulletin on this.
I have never run one with the rubber plugs misplaced, but it sounds like 800 has the answer.
 
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sandmanmike1,
Fuel economy like all phazers is a thimble full of gas goes for ever. Sled idles great starts one pull.

Junior,
Shop says he changed all fuel lines and rebuilt fuel pump.

800,
I was by the shop today, They had already checked the carb plugs, haven't checked the hot grips yet. But would that issue exist if the grips are shut off? Factory grips in 84' look like an add-on, but are not. had thumb warmer disconnected it, too hot. I cut the wire to it. Are there any other items you can think of? the shop is getting ready to check the phase of the crank shaft to see if it out of phase. I really do not think this is the problem, unless something drastic happened at the first shop that did the intial carb cleaning. I was told he will look at the hot grips, but if it is not an issue when it is off I do not think it is it either.

Ready to draw at straws?? I do thank all for the help though.
84Phaser
 
wiseguy,
Adding the ground. Do I need to add just a ground from the motor to the frame? Or do I also need to provide a better ground for the hot grips?

The first issue that I ever had never effected how the sled ran. Once in a while driving down the trail at night you would notice the headlight dim. I had either figured CDI or lighting coil (stator) which have both been changed. The voltage regulator rectifier had some corroded wires that looked like they were going to break, shop repaired all connections. This improved how the sled ran some but did not fix the current problem. This is a PH480SE w/ electric start. the electric start works fine now with the voltage reg wires fixed.

Any ideas are welcome, it is close to time for the obscure?? As I said in the previous reply I really do not think it is a crank phase issue. At least not while it was in my possesion. It could have only happened at the first shop. The first shop had done other work for me in the past on other bikes and sleds and seemed reputable, just slow, I never expected this though.
wiseguy thanks for the suggestions also.
84Phaser
 
See the issue is you said it ran OK except for a bog, then you took it in to get the carbs cleaned and things got worse. Thats what leads me to the carbs. You SURE they double checked the rubber caps are in the right location? This is not the first time I've had this exact cenario. At least 10 times over the years. Rubber caps cover the center passage and the pilot jet......
 
A wire between the engine and frame is all you need. The grips will ground to the frame and then to the motor.
I also have a Phazer with a headlight dimming problem. Very intermittant- it won't do it when I can check it. I guess I'll have to take a meter along and troubleshoot it out on the trail at night when it happens.
As 800 said, double check the rubber plugs. Have it done while you are there, with all the time it's taken, they should give you that consideration.
The guy is chasing his tail now.

A Phazer out of Phase . . . imagine that.
 
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I had similar problems with a 87 Phazer & after exhausting all possible fixes Yamaha recommended that a new ground wire from the stator to the frame. That solved the problem
 
wiseguy &vgs,
I am going to bring the sled home from the shop and tru some of this myself. I will make sure the ground wire gets done and see if it helps.
I will post my results
Thanks
84phaser
 
Rubber plugs in wrong hole "been there done that" more than once and I Knew better ! Now a question aren't the Handwarmers wired direct from the gripwarmer(?) coil and are AC (not rectified) ? If it has Electric start the battery would use the frame as a way to complete the DC circuit ? I worked on a friends Phazer and he added Hot grips and grounded them to the frame and complained because they didn't get warm enough so, I found a ground going back to the lighting system (AC) and PRESTO Hot grips ?
 
I was on a ride years ago with a guy that showed up with a phasor that acted a little like you describe. Turns out he serviced his own carbs the night before the ride. He removed the main jet bolts without removing the carbs. Apperently, it is possible to pull the main jets from phasor carbs without taking them off, but when you do you need to be sure that you hold the bowl in place. If you remove the bowl with the main jet bolt, a little rubber plug falls out of the carb and down into the engine well. Thats what had happened to his. It ran but would not make regular revs. I'll bet a dark rum and coke I didn't solve your problem but it's worth a look. In case you were wondering, the dummy that dropped the rubber plugs on this particular phasor was me.
 
Ok so we have a 4 page thread on doing carbs on an 84 Phazer, so 84 Phazer, your mission this weekend is to fix this thing and give us the answer because it's obviously kiilin us all to know. LOL
 
Vmax540 said:
Rubber plugs in wrong hole "been there done that" more than once and I Knew better ! Now a question aren't the Handwarmers wired direct from the gripwarmer(?) coil and are AC (not rectified) ? If it has Electric start the battery would use the frame as a way to complete the DC circuit ? I worked on a friends Phazer and he added Hot grips and grounded them to the frame and complained because they didn't get warm enough so, I found a ground going back to the lighting system (AC) and PRESTO Hot grips ?
Click to expand...

The AC and DC circuits both use the same ground. There is a common ground wire in the wire harness for ignition, lights, handwarmers and electric start components. This wire also has a connection to the frame and to the motor ground. Connecting the gripwarmer ground to the frame made the electricity follow a longer path with more connections. The electricity has to get to the harness ground wire to get back to the motor. Connecting a wire between the frame and the motor ground (or directly to the stator plate) adds an alternate route for more capacity. Remember that the motor is on rubber mounts and there is no good direct connection to the frame.
 
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Have sled at home. Shop tried ground before I picked it up. They grounded the motor? Should I be trying something else?? This is an electric start model. No luck. Disconnected grips all together.

Thanks
 
This has got to get fixed soon, winter is comming and it is driveing everyone on here nuts.

I know I had to do the ground on mine, I went from the engine to the ground circuit in the little black boot under the oil tank. My problem was fixed. It sure seems like the rubber plugs in the carbs come a lot.
 
Home

Home is N.H. I am in the lakes region.

I would like to cure before winter.

Any and all help is welcomed!
Thanks
 
Yes, I would use the process of elimination. Find another sled of the same or similar year (be sure to know any differences), and swap parts one at a time until you isolate the problem to a certain component. Even if the parts are just temporarily swapped, you will know what needs to be replaced when you are through.
 
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