08 700 stalling...???

[latenighter]

i have a 08 grizz 700 that i just put a k&n airfilter in and put a hmf slip on pipe on. and now the quad stalls. its only when after giving it the gas and coming to a stop. runs fine when given er. please help me out guys is there something else that i need to do to it? thanks

[AZ08Grizz]

You have created a lean condition by adding the filter and silencer. Do the podmod or get a FI controller.

[Grizzrider08]

Ive had this problem, along with many others, and ive tried everything to stop it, with no avail. Im not spending $230 to maybe fix it with a optimizer or fuel controller, cause ive read people still have the stalling with the tuners. Its just something i live with, gets annoying at times.

[Teh Wicked]

Originally Posted by Grizzrider08

Ive had this problem, along with many others, and ive tried everything to stop it, with no avail. Im not spending $230 to maybe fix it with a optimizer or fuel controller, cause ive read people still have the stalling with the tuners. Its just something i live with, gets annoying at times.

Thats one of the dumbest things I ever heard in my life...

So let me get this straight...You go out and spend $7,000+ on a quad, then another couple hundred on parts to make it faster. And now all the sudden your too cheap to spend another $230 to make it all work correctly and safely? Am I reading this right???

I understand you hesitation about buying a part to fix the problem and it may not cure it, but dood, YOUR ENGINE IS LEAN! its going to go boom one day, either it will got boom real big or one day its just going to start smoking like a beotch cause there is a hole in you piston from the lean condition. Then you can say goodbye to your engine...

dont run you atv while lean, sure its fine for a little while, but its not going to last forever like it should. about the time your warrenty if up is when it will take a dump on you...

[AZ08Grizz]

Originally Posted by Teh Wicked

Thats one of the dumbest things I ever heard in my life...

So let me get this straight...You go out and spend $7,000+ on a quad, then another couple hundred on parts to make it faster. And now all the sudden your too cheap to spend another $230 to make it all work correctly and safely? Am I reading this right???

I understand you hesitation about buying a part to fix the problem and it may not cure it, but dood, YOUR ENGINE IS LEAN! its going to go boom one day, either it will got boom real big or one day its just going to start smoking like a beotch cause there is a hole in you piston from the lean condition. Then you can say goodbye to your engine...

dont run you atv while lean, sure its fine for a little while, but its not going to last forever like it should. about the time your warrenty if up is when it will take a dump on you...

X2 Wicked. Those other people Grizzrider mentions may have a FI controller but that doesn't mean they know how to tune an engine with it. A point that Grizzrider seems to have missed is that latenighter apparently didn't have a stalling issue prior to his making the changes. At any rate, latenighter could do the podmod at no cost and get by with that.

[Grizzrider08]

Originally Posted by Teh Wicked

Thats one of the dumbest things I ever heard in my life...

So let me get this straight...You go out and spend $7,000+ on a quad, then another couple hundred on parts to make it faster. And now all the sudden your too cheap to spend another $230 to make it all work correctly and safely? Am I reading this right???

I understand you hesitation about buying a part to fix the problem and it may not cure it, but dood, YOUR ENGINE IS LEAN! its going to go boom one day, either it will got boom real big or one day its just going to start smoking like a beotch cause there is a hole in you piston from the lean condition. Then you can say goodbye to your engine...

dont run you atv while lean, sure its fine for a little while, but its not going to last forever like it should. about the time your warrenty if up is when it will take a dump on you...

I had the same condition when the atv was brand new, with not a single mod on it. Ive tried the pod mod, all different settings, with no changes. My exhaust does smell rich, and my plug was sooty black when i last changed it right after winter, and i havent touched the engine at all. So by any means, its not lean. Ive swapped out the rollover valve with a fuel filter, tried different grades of fuel, played with the pod, played with the idle, havent solved the stalling at all. Also, i havent put "hundreds" into making it faster, maybe $60 for a uni and tip? To get the stock bike to run right, i shouldnt have to spend $230 on a optimizer, and still quite possibly have the same problem, money wasted.

[Teh Wicked]

Thats a warranty issue then...Even still its an expensive bike and your running the very high risk of having major problems.

Rich or lean are both equally dangerous. They just have different results. The most devistating is actually rich, you will get a fuel puddle on your piston and the heat raditation from the bike runnign will ignite this puddle when the piston is traveling up. this causing a large explosion in you alrady up traveling piston, so something has to give and its not going to be the air. It will either be a ehad gasket, head, piston or rod. usually its the rod cause its the weakest link when extended. So it will either bend or break in half. Then you will have a large hole in the side or bottom of the engine. This is what we in the car world like to call, Detonation.

get that checked out man, if you dont you will be very sorry you didnt one day.

A black spark plug doesnt mean anything...its goign to smell like fuel no matter what the condition is. You need to run the quad at a good hard wide open throttle and then immediatly stop right there and pull the plug and read it. If you can see tiny sparkles, white spots, or anything that doesnt belong on it. that means your lean. if its wet with fuel or the electrode is funny colored, your rich.

If its just black and the electrode is normal grayish color, then your good.

Key is to warm it up properly. then give it a good hard wide open throttle run down a straight strech. IMMEDIATLY stop and pull the plug, dont so aything but stop and pull the plug and read them.

[Grizzrider08]

What i still dont understand, there are many people with the same problem. Its not a small case, and yamaha dont do a thing about it, they dont have an explanation for it. Ive had my dealer look at the quad once, and said he would contact Headquarters, and the response he got back was the rollover valve. Tried that, and still had pressure buildup, and stalling so i just swapped it out for the fuel filter, dont get pressure buildup anymore, but still have the occasional stalling. Im pretty much sold on that its a flaw with the bike. A guy in another topic said it was the fuel vaporizing in the fuel rail, which causes the studdering and stalling at slow speeds, and if you stop for a min or 2 and restart. Sounds logical to me.

[GreenGrizzRider]

Have you tried something simple like adjusting your idle screw. I know my grizz would stall at a idle once in awhile when it was new. I raised my idle and this helped. I know on my 07 you can check your idle speed through the pod. Maybe this has nothing to do with your problem, But I thought I would throw it out there.

[Teh Wicked]

hrmmm, almost sounds like the fuel injection is too close to something that makes it very warm. Hot fuel will cause a stalling issue as well...I know guys with race cars that has had straight up demons in the car just because a fuel line was about 4-5 inches to close to a exhaust manifold or something.

[Grizzrider08]

Originally Posted by GreenGrizzRider

Have you tried something simple like adjusting your idle screw. I know my grizz would stall at a idle once in awhile when it was new. I raised my idle and this helped. I know on my 07 you can check your idle speed through the pod. Maybe this has nothing to do with your problem, But I thought I would throw it out there.

Yea, ive tried playing with the idle and pod at the same time, seemed to help a little, but i do still get stalling. As long as i dont stop and turn the quad off, its pretty good, and as long as im not going super slow for too long, seems as the temp goes up, it stalls more often when theres a load and im crawling. Im pretty much used to it, but its imbarrising when my quad just randomly decides to stall on me.

[AZ08Grizz]

Originally Posted by Grizzrider08

Yea, ive tried playing with the idle and pod at the same time, seemed to help a little, but i do still get stalling. As long as i dont stop and turn the quad off, its pretty good, and as long as im not going super slow for too long, seems as the temp goes up, it stalls more often when theres a load and im crawling. Im pretty much used to it, but its imbarrising when my quad just randomly decides to stall on me.

Grizzrider have you tried adjusting the shift linkage? I know it doesn't sound like it would be related but there are posts on this site where they swear adjusting the shift linkage cured thier stalling problems. Worth a try anyway. BTW, keep in mind that you hijacked this thread from latenighter whose stalling problem is a result of changes he made and is a different issue from your stalling problem. No harm done. I feel your pain. I would be PO'd if my bike stalled all the time but I'm blessed with an 08 that has only stalled maybe 3 times in the 10 months since I bought it.

[Grizzrider08]

Originally Posted by AZ08Grizz

Have you tried adjusting the shift linkage? I know it doesn't sound like it would be related but there are posts on this site where they swear adjusting the shift linkage cured thier stalling problems. Worth a try anyway.

I actually havent tried it, wasnt sure if it would help or not. I may give it a try tomorrow.

[AZ08Grizz]

Originally Posted by Grizzrider08

I actually havent tried it, wasnt sure if it would help or not. I may give it a try tomorrow.

I think you can find instructions on this site(search). I would adjust so that when your in 2wd high the lever on the trans is fully in the detent and there is no tension on the shift rod just a "slight bit" of free play Then check that the reverse lite is working when you put it in reverse.