2007 grizzly 700 major problem at 190 hours - Yamaha Grizzly ATV Forum
Grizzly Engine & Transmission Discuss your Grizzly engine and transmission modifications here.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 18 Old 01-28-2010, 09:29 PM Thread Starter
 
Join Date: Jan 2010
Age: 38
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
2007 grizzly 700 major problem at 190 hours

hello to all
i need some help with my 2007 grizzly 700.
it has 190 hours on it. recently it has developed a major problem.
it has been to the dealer and they have NEVER seen this problem before.
here goes:
bike starts and idles fine
when in you slowly start giving it throttle, the bike runs rough and stumbles at about 1500 rpm and up.
if you pin the throttle fast, it revs fine up to red line
if you try to stop mid way between idle and redline is runs like crap
i have done everything possible. i even borrowed a buddies 2007 700 and swapped all the sensors, throttle body assembly, fuel tank with fuel pump, coil and plug wire, computers, etc.
i even pulled my head off and got it cleaned and re-done hopeing that helped
notta.
no codes come up on the computer.
ive changed plugs a zillion times
the engine compression test was great.leak down great.
with the stock computer in the bike the problem is less noticable but there
running the vdi copperhead, the problem is WAAAAYY more noticable.
ive had the copperhead in for a while and no problems before.
with way more spark output, i thing any problem with the grizzly will be amplified with the copperhead
lyle at vdi sent me a new copperhead in case it was it.
notta.
tryed all vdi maps for lean settings, rich settings,etc
no difference
ive concluded the engine is fine
the motor needs air fuel and spark
air should be fine
so either the spark of fuel is my problem im guessing
this battle is ongoing for months
any help would be great
im ready to kick it off a cliff!!!!
luckylogger666 is offline  
Sponsored Links
Advertisement
 
post #2 of 18 Old 01-29-2010, 01:59 AM
 
keeter's Avatar
 
Join Date: Aug 2009
Location: winston salem, nc
Age: 63
Posts: 1,092
Thanks: 169
Thanked 198 Times in 184 Posts
Rep Power: 93
           
COULD PROBLEM BE IN WIRING, LOOSING CURRENT IN WEAK PLACE IN WIRES?

07 CAMO700 FI EPS Viper Elite 3500 STOLEN
2"Hitch K/n Air Filter EHS Lid Yamaha HD D2 Overfenders RicochetSkids COOP2&3
HMFSwamp&Optimizer Dyna FS Rigid 4" Dually LED Tigertail System Yamaha Box
keeter is offline  
post #3 of 18 Old 01-29-2010, 07:10 AM
RIP Mike Mayho
 
Mad Mike's Avatar
 
Join Date: Dec 2006
Location: Michigan
Age: 56
Posts: 3,705
Thanks: 78
Thanked 406 Times in 327 Posts
Rep Power: 129
           
check your flywheel key to see if it sheared and has your timing off a little. the only other think of is a wiring issue but that doesn`t make sense if it runs fine wide open. I would of guessed tps but you tried a different 1. you could put a inline spark tester and watch to see if it`s a spark problem u can use a timing light also. did you swap the crank sensors.

Oh by the way welcome to griz central

Signature edited by GEARSLAYER in respect for the great late Mike Mayho known to us as Mad Mike. Mike's no longer with us people.

Mike road a mean...
07 770 Green Grizzly: EHS/Barker Port/Polish w/1mm o/s valves,Trinity 734 BBK, Barker +4mm Stroker Crank, Stage 2 Raptor Hot Cam, Barker true dual exhaust, PC5 w/Auto Tune, EHS Airbox Setup, 2mm o/s Throttle Body by KDS, 25.5" Pit Bull Growlers, Owner of Mike`s Powerhouse Mods #2 and #3 (formerly coop45 mods).

GOD BLESS MIKE'S SOUL. HE WAS A GREAT FRIEND AND ASSET TO THIS SITE. SEE YOU WHEN I GET THERE BUDDY! JAMEY (AKA GEARSLAYER).

Last edited by Mad Mike; 01-29-2010 at 07:12 AM.
Mad Mike is offline  
post #4 of 18 Old 02-01-2010, 01:07 AM Thread Starter
 
Join Date: Jan 2010
Age: 38
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
hello
no i didnt try the crank sensor. any sensor failure should triger a code right?
also will the bike run or idle at all with a bad crank sensor?
my bike starts good, idles smooth, then bogs out and stutters when the throttle is applied?
thanks
luckylogger666 is offline  
post #5 of 18 Old 02-01-2010, 07:25 AM
RIP Mike Mayho
 
Mad Mike's Avatar
 
Join Date: Dec 2006
Location: Michigan
Age: 56
Posts: 3,705
Thanks: 78
Thanked 406 Times in 327 Posts
Rep Power: 129
           
is the reverse light flashing when this is happening??

Signature edited by GEARSLAYER in respect for the great late Mike Mayho known to us as Mad Mike. Mike's no longer with us people.

Mike road a mean...
07 770 Green Grizzly: EHS/Barker Port/Polish w/1mm o/s valves,Trinity 734 BBK, Barker +4mm Stroker Crank, Stage 2 Raptor Hot Cam, Barker true dual exhaust, PC5 w/Auto Tune, EHS Airbox Setup, 2mm o/s Throttle Body by KDS, 25.5" Pit Bull Growlers, Owner of Mike`s Powerhouse Mods #2 and #3 (formerly coop45 mods).

GOD BLESS MIKE'S SOUL. HE WAS A GREAT FRIEND AND ASSET TO THIS SITE. SEE YOU WHEN I GET THERE BUDDY! JAMEY (AKA GEARSLAYER).
Mad Mike is offline  
post #6 of 18 Old 02-01-2010, 08:16 PM Thread Starter
 
Join Date: Jan 2010
Age: 38
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
the reverse light is not coming on.
i swapped reverse sensors with my buddies and no change
i also grounded out the reverse sensor and still no luck
im still stumped
i will keep on it tho
thanks for your help
luckylogger666 is offline  
post #7 of 18 Old 02-01-2010, 09:05 PM
CRASH STUNT MEMBER
 
desertdweller's Avatar
 
Join Date: May 2008
Location: Valley of the Sun/ PHX.-AZ.
Age: 56
Posts: 8,068
Thanks: 1,571
Thanked 1,790 Times in 1,216 Posts
Rep Power: 100
           
Sounds like it's within the Fuel Injector or wiring to it.
Your not getting a even flow of fuel. When full throtle you get the good seting. but the minute you drop or minimize flow it brakes up.

GREEN It's your Daddy !!!!
http://photobucket.com/desertdweller
'08-700 FI/EPS
OG/GROC Member #1
Thought of joining the Original Grizzly Roll Over Club? (OG/ GROC)
PM me and I'll tell you whats required to join.
All Grizzly's welcome!
desertdweller is offline  
post #8 of 18 Old 02-01-2010, 09:44 PM
I Mucked up AGAIN?!?!
 
~Muckboy's Avatar
 
Join Date: Apr 2008
Location: Albany, NY
Age: 46
Posts: 3,186
Thanks: 293
Thanked 232 Times in 198 Posts
Rep Power: 111
           
Talking

Wow....that's a good one...I wonder if....wait....do you have a green Grizzly???

Check out My Garage...IT'S FULL!!!!
GC/OG GROC MEMBER #2

~Muckboy is offline  
post #9 of 18 Old 02-01-2010, 10:22 PM
 
Transam355's Avatar
 
Join Date: Mar 2008
Location: Sault.Ste.Marie,ON
Posts: 365
Thanks: 13
Thanked 42 Times in 36 Posts
Rep Power: 106
     
my guess is crank sensor and/or wiring to coil or injector.just a thought but you say that you have VDI unit when you installed is it possible wiring harness could have not been secured properly wiring moving slightly over a long period of time now causing a slight break in a wire??? good luck
Transam355 is offline  
post #10 of 18 Old 02-02-2010, 07:42 AM
RIP Mike Mayho
 
Mad Mike's Avatar
 
Join Date: Dec 2006
Location: Michigan
Age: 56
Posts: 3,705
Thanks: 78
Thanked 406 Times in 327 Posts
Rep Power: 129
           
he has swapped the whole throttle body and put the stock ecu in an even tried a 2nd vdi.
The crank sensor my not be bad enough to set a code but bad enough to create a drive-ability problem I have seen it happen to cars and trucks alot. Mostly Chryslers some have a adjustable air gap and if that is off they get all stupid.

Signature edited by GEARSLAYER in respect for the great late Mike Mayho known to us as Mad Mike. Mike's no longer with us people.

Mike road a mean...
07 770 Green Grizzly: EHS/Barker Port/Polish w/1mm o/s valves,Trinity 734 BBK, Barker +4mm Stroker Crank, Stage 2 Raptor Hot Cam, Barker true dual exhaust, PC5 w/Auto Tune, EHS Airbox Setup, 2mm o/s Throttle Body by KDS, 25.5" Pit Bull Growlers, Owner of Mike`s Powerhouse Mods #2 and #3 (formerly coop45 mods).

GOD BLESS MIKE'S SOUL. HE WAS A GREAT FRIEND AND ASSET TO THIS SITE. SEE YOU WHEN I GET THERE BUDDY! JAMEY (AKA GEARSLAYER).
Mad Mike is offline  
post #11 of 18 Old 02-05-2010, 12:31 AM
 
Join Date: Dec 2009
Age: 57
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
A buddy of mine had the same problem,we stripped all the plastics off and found a bared live wire that was shorting out on the frame.The bared wire we found was on the right side about even with the front of the seat and ran along the frame.Hope this helps.
Trailburner is offline  
post #12 of 18 Old 02-07-2010, 12:02 AM
 
Join Date: Apr 2008
Location: Tillamook Oregon
Age: 32
Posts: 175
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 106
 
strangely enough I have experienced this same xact problem..... With a Toyota LOL... it ended up being an injector... dono if that helps BUT

If you have to ask.... You dont wana know.....
Experiance is what you get when you dont get what you wanted.....
bleakhorizon is offline  
post #13 of 18 Old 08-09-2010, 03:51 PM
 
indaba's Avatar
 
Join Date: Aug 2010
Location: Germany
Age: 67
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Hi luckylogger666, your problem is so simular to mine. Did you resolve it and if so how?
indaba is offline  
post #14 of 18 Old 08-09-2010, 04:11 PM
 
indaba's Avatar
 
Join Date: Aug 2010
Location: Germany
Age: 67
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
I have a lot to learn, am new here!
I have two Grizzly 660's, the one (2004) I re-built the engine with my son-in-law and runs like clockwork, my Grizzly 660 (2003) is acting up. I've checked all I can think of incl. reverse switch, CDI, carb, and the whole electrics as far as possible. The engine still stutters (both stationary + under load while driving) at part-throttle about 1/4-3/4. Starts first go, idle is great and full-throttle is also full power but as soon as I let off the throttle, it splutters/misses with an occasional soft bang+flame out of the exhaust on overrun. Search me as to what I have overlookrd. Any ideas from anyone?
indaba is offline  
post #15 of 18 Old 08-10-2010, 03:22 AM
 
yamahonda's Avatar
 
Join Date: May 2009
Location: Ontario, Canada
Age: 38
Posts: 108
Thanks: 7
Thanked 4 Times in 4 Posts
Rep Power: 92
 
Quote:
Originally Posted by indaba View Post
I have a lot to learn, am new here!
I have two Grizzly 660's, the one (2004) I re-built the engine with my son-in-law and runs like clockwork, my Grizzly 660 (2003) is acting up. I've checked all I can think of incl. reverse switch, CDI, carb, and the whole electrics as far as possible. The engine still stutters (both stationary + under load while driving) at part-throttle about 1/4-3/4. Starts first go, idle is great and full-throttle is also full power but as soon as I let off the throttle, it splutters/misses with an occasional soft bang+flame out of the exhaust on overrun. Search me as to what I have overlookrd. Any ideas from anyone?
Whats happening to you sounds like a carb jetting issue for sure, I'm sure somebody with a bit more carb experience will pipe in with some help, but from what I know of carb tuning, if it runs good at idle and at wide open throttle, it may be your needle is in the wrong position.

2009 Grizzly 550 EPS camo
26" Mud Lites
EPI clutch kit

1983 Honda ATC185s
yamahonda is offline  
Reply

  Lower Navigation
Go Back   Yamaha Grizzly ATV Forum > Grizzly Forums > Grizzly Engine & Transmission


Search tags for this page
07 grizzly 700 problems
,
07 yamaha grizzly 700 problems
,
2007 grizzly
,
2007 grizzly 700
,

2007 grizzly 700 problems

,
2007 yamaha grizzly 660 problems
,
2007 yamaha grizzly 700
,
2007 yamaha grizzly 700 issues
,

2007 yamaha grizzly 700 problems

,
2007 yamaha grizzly 700 recall
,
2007 yamaha grizzly problems
,
engine issues with 700 grizzly
,
grizzly 700 problems
,
grizzly 700 transmission problems
,
yamaha grizzly 700 problems
Click on a term to search our sites for related topics.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
2007 Grizzly 700 brake problem Bman1991 Grizzly Tech Tips 3 01-04-2010 10:58 PM
2007 problem/hope to get newer machine story conclusion dutchie General Discussion 16 11-29-2008 08:53 AM
2007 700 grizzly problem, hope to get newer machine in exchange dutchie General Discussion 4 10-05-2008 08:44 PM
Front Brake Problem 2007 Grizz 700 jack3689 Grizzly Chassis & Body 64 07-24-2008 11:07 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome