Couple QUESTIONS FOR YOU GUYS........

[S pump]

I was out riding last week and felt a slight vibration under my left foot........actually felt it for about 2500 miles this year. I thought I may have a lose stud or something but finally this weekend my speedo side driveshaft bearing let go. I wouldn't have known except the sled felt like it was out of gas and started flashing lights and codes on the dash. It appears the spent bearing allowed the speed sensor and speed sensor gear to rub to a point where they were both damaged. I called my dealer and he said there is no warranty on unlubricated bearings and I was on my own. Does this sound right and has and has anyone had this problem. I'm pretty sure the sensor being damaged is why the motor stopped, I hope so. It started up and ran fine a couple time after it died but as soon as I tried to go it would stall. Another question, I started hearing an exhaust leak before the last 1000 mile ride and that also appears to be worsening. What is the deal with warranty on that. The sled has 7000 miles and 18 months left on the extended warranty.

 

[ZR800EFI]

Bearing likely won't be covered. Exhaust should be.

Mine's going to the dealer tonight for exhaust as well...it started getting louder and backfiring at around 6000 miles. I had to drive it for another 200 miles or so, and I'm hoping the y-pipes aren't damaged so I can get the sled back ASAP since they have the donuts in stock.

 

[S pump]

Any one else

Have a clue, I put the new sensor on and the sled just turns over like no compression, won't start and shows code 1

 

[schmeg]

First off the drivshaft bearing is sealed and has no grease zerk, so the factory didn't intend on you or anyone having to lube the bearing. Yes the bearing can go over time, and yes there is a way to lube it, but it is not a procedure Yamaha has listed in the manual. So I would push that one. The sensor may be the reason it won't run, but don't hold me to it. The donuts are a weak link and should be looked at, and should be covered. Mine was getting loud, but strangely anough, I dissassembled my Y pipes, inspected the donuts, (which looked fine) and re-installed the pipes, and voila,,,the sled got quiet again. Go figure. I would definitly push the bearing thing. There is no zerk provided for greasing.

 

[S pump]

You may have a point on the bearing.........I'm concerned when I turn the primary it turns with little or no resistance and the electronics seem weird....shows code 1 after lengthy initialization after turning the key. My exhaust as well is getting noisy and I hope no damage has been done by having an exhaust leak. I put a new speed sensor on and the sled just turns over, Also there appears to be no fuel pump buzz when I turn the key.

 

[Riceburner]

If you can turn the primary with no resistance you have issues.

IE no compression !!!!!

Valves stuck open or ?

To the dealer my man unless you dare let Woolie mess with it.

 

[schmeg]

I would say if you are still in the YES warrentee period, bring it to the stealer. The compression thing sounds odd. It is not at all related to the driveshaft bearing problem or the exhaust leak. I do believe the code is related.

 

[4Fighter]

IMHO: Those bearings are junk! NOTHING has changed in that design since '03 - and since nothing is even mentioned about it in the manuals, failure is inevitable. You can expect one, maybe two seasons or 4,000 - 4,500 miles out of them before you have to replace or re-pack, them. You are pushing your luck if you don't at least service them at that mark. The first and last time it happened to me was at 4500 (season 2) on my '04.

At 2400 miles (total) I cleaned/re-packed mine ('07 Attak GT) this season, and will replace it this spring. But the fun part is getting the race off the drive axle if you have to limp it back any good distance. This is one good example of PREVENTIVE MAINTENANCE. It's WAY less work to pull that bearing BEFORE IT FAILS!

I just had my exhaust donuts replaced under warranty. The engine should run regardless of the speedo sensor. Let your dealer worry about it when they replace the donuts - it should be covered, minus the bearing R/R.

 

[SERPAGS]

I know that if you unplug the speedo, the sled runs, but not well and a code appears. Cannot recall the code .

 

[S pump]

I don't know it seems weird. Turn over by the primary feels like no connection to anything but if I turn it backwards, there is a weird resistance like compression but not compression..make sense? Gotta get it over to dealer I guess................I'm pissed now.

 

[S pump]

Another thought..............could a leaky exhaust caue valve failure and subsequent no compression?

 

[tttario]

Leaky valve would cause no restriction on either rotation, CW or CCW. Not just the one you are speaking about. I was under the assumption that all codes were double digits??? Are you sure you are not seeing ERR1, which is error code 1, which I believe is open wiring. Was your speed sensor destroyed??? A chunk may have blown off and cut some wiring in the harness above the secondary????

Here is the list of error codes found in FAQ section here.

http://www.ty4stroke.com/download.php?id=27062

Trevor

 

[S pump]

Yes it is ERR 1, I'm concerned that something grenaded but the oil looks good and it ran 3 or 4 times after it stopped. It would idle fine but when I tried to take off it would stall. Sounded perfectly normal, no clanks or whining. Finally just stopped running at all. Fuel pump is not energizing and i've seen some talk about the grounds on those.......is there an easy test to see if thats the case................just seems so weird to have all this stuff go at one time like it did...........

 

[schmeg]

My guess is your speedo gear fodded out something on the sled to keep it from running properly. You ran it a couple of times after the fact and it finally loaded up. Can't explain the compression thing. I know my primary doesn't feel all that connected when you spin it by hand. Pull a plug and look at the condition/color, and place the plug over the hole then pull the motor through using your primary. You should at least hear come hissing on the compression stroke.

 

[stoutner]

I don't know it seems weird. Turn over by the primary feels like no connection to anything but if I turn it backwards, there is a weird resistance like compression but not compression..make sense? Gotta get it over to dealer I guess................I'm pissed now.

When you turn your primary clockwise, it feels like nothing but about every half turn you will feel the compression. When you turn it counterclockwise, it feels like compression...it is not. It is your starter motor engaging. Trust me...The motor is fine. The starter motor is connected to a "one way" gear on the flywheel. That is why you dont feel it engaging when you spin your primary clockwise. Also, when you are turning it backwards, it will not have a lot of air to comress because it is actually compressing air on the exhaust stroke...not the compression stroke. The cams are designed differently and the motor is not made to compress backwards.


It sounds like your fuel pump is not pumping. When you turn your key on, if you don't hear the pump. it is not working. Check the fuses thcheck your fuel pump relay.