97 warrior with engine miss

[yfmpimp]

97 warrior rebuild

Hi all. Brought a Yamaha warrior 350 think its a 97. Got it cheap off a old man that needed to sell it as he had heart attack anyways everything runs on it. But it has a miss / splutter on idle and on 1/2 to full throttle.

Engine number is: 3GD-212021 Any ideas if its a 97? and any one got a pdf service manual for one? Couldnt find number on the frame.

Things I have done:
Drained old fuel out of the tank and carb cleaned spark plug and checked the oil but needs oil change. Checked air filter and is clean and oiled.

Video of it running.
http://www.youtube.com/watch?v=Y-vjwlF83Gw

Photos of the spark plug after running/riding for about 30 mins. Not wet just black and powdery. Oil?

Also checked the timing. This is the settings on F at the bottom.

This is the settings on T at the bottom.

One other thing I see the rubber intake manifold that connects the carb to the engine has a crack in it, would this be making it miss? sucking air in. going to replace it this week with new one.

Any help would be mint.

 

[yfmpimp]

New air intake manifold ordered. Cleaned carb as its off the bike at moment.

Quad has stock air box and filter plus lid on. Exhaust is not stock I think photo of it.

 

['00 WO-YA!]

That intake boot is likely most of your problem. A crack in it will cause those exact symptoms and ours usually the 1st thing I tell guys to check. Now, having said that, they usually crack or tear b/c there is movement in the engine mounts. Make sure that your mounts are all good and tight then honestly I go over mine every couple of days of hard riding. Good luck bro.

 

[fknboss]

That plugs awfully black for a lean condition from the manifold.

 

[yfmpimp]

Thanks dudes. Will let you know how it goes with new manifold mount.

Also yes the top engine mount was not tight and the front mount can see some wear on the top one.

Dont think this quad has seen a spanner or socket in ages till I got to it.

Just a update, Got lots of new parts for the quad and in rebuild stage at moment.

New headlights to replace the 2 different ones it had on it plus one had a crack in the back plastic. Dont do any night riding so mainly on it for when im in tree tracks. Going to replace taillight also with led one when i find one. taillight lens is crack thats why i upgrading it.

New grab bar to replace steel one that was bend from last owner going to far doing a wheelie.

Nerf bars with black nets. Plus Chassis Skid Plate.

Stripping and cleaning. LOL my YFZ450 frame up the top of photo.

Frame cleaned sanded and repainted.

Engine cleaned and top repainted black.

Got new alloy bumper, swing arm skid plate, A-Arm Skid Plates, chain rollers, chain, front wheel bearings.

Hope to have it back together buy Xmas day. maybe without out plastics on. going to be doing some vinyl graphics at work tomorrow for on the fenders.

 

[PHANTOMLORD]

Nice man that thing looks brand new!!!

 

['00 WO-YA!]

That plugs awfully black for a lean condition from the manifold.

Yeah man but you have to eliminate the obvious problem before you can tune out any others.

 

[yfmpimp]

Thanks. And yeh going to short the problem out also. just about to go in garage and work on it now. Glad I have 3 weeks off work over xmas.

 

[PHANTOMLORD]

Lucky ass,,, im lucky if i get the day off,lol... My 88 ran all screwy when i got it and it was the intake boot so id recommend replace the boot and check wiring for the switches then go from there..always fix broken before adjusting!!

 

[yfmpimp]

Yeh checked wires over today.and cleaned them up.

Vinyl flames installed. Still got to clean white parts and new yamaha stick on it

Started putting back together and replacing parts with new.

 

[lbjamm]

Lookin good pimp.

 

[yfmpimp]

Did find this on the wires. Its like a rat has been eating it, most likely rubbing on frame. Anyways have replaced the wire with new is on the fuse holder.

 

[yfmpimp]

Little more done.

 

[drknight77]

That silver is gonna look awesome with the plastics you got there! I wouldn't mind putting those flames on mine but my front plastics are broken

 

[geeessfore]

Is that mexi chrome

 

[fknboss]

^ LOL^ actually looks OK tho.. you got a nice project going here. Wish I had the time to tare mine down. Maybe after I buy my wife something. Got too many projects right now.

 

[yfmpimp]

Is that mexi chrome

Color is called Aluminum.

Thanks yeah also in the middle of rebuilding my YFZ450 also its on hold at moment till parts turn up.

Going to be getting the bolts and nuts I need tomorrow. Also my led tail light and front wheel bearings have turned up.

New Yamaha logos done.

 

[PHANTOMLORD]

nice, that things gonna look pimped out!!!

 

[yfmpimp]

go air box and new air filter in and couple of other parts bolted. Started to change the front wheel bearings got one side done.

Anyone got any tips of getting the front swing arm ball joints out of the steering knuckle? I have removed the cotter pin and got the nut loss and thread back to the end of the shaft.

Thanks.

 

[PHANTOMLORD]

do you mean the aarm ball joints at the spindle or where the tierod connects to the steering shaft? Either one i hit the lobe that the threaded shaft goes threw with a hammer while pulling down on the Aarm or the tierod wich ever your doing..