If anyone is still having problems with their dcs equipped sleds, pm me, I have about 2 years of experience with it and have tried numerous things. Yesterday I finally got it to work acceptably.
thanks.
thanks.
hi
I understand that you are working on the DCS system is it an inherently bad system
I was inder the impression that it was the greatest and it kept a lot of srx's out of the shop and on the snow not burned down
I just bought a 2001 srx and want to up grade it to DCS but now I am not so sure any more
Mabey a correctly jetted engine (a little fat) is all I need
but it is when I get a bit of bad gas in her thaT i AM WORRIED THAT IT WILL BURN DOWN
i STILL HAVE TO TAKE IT APART CAUSE IT HAS NO COMPRESION ON ONE CYLINDER AND THE MIDDLE ONE IS WEAK AND THE MAG ONE FEELS FINE
Ooops on the caps lock sorry
is the mag #1 cylinder
I understand that you are working on the DCS system is it an inherently bad system
I was inder the impression that it was the greatest and it kept a lot of srx's out of the shop and on the snow not burned down
I just bought a 2001 srx and want to up grade it to DCS but now I am not so sure any more
Mabey a correctly jetted engine (a little fat) is all I need
but it is when I get a bit of bad gas in her thaT i AM WORRIED THAT IT WILL BURN DOWN
i STILL HAVE TO TAKE IT APART CAUSE IT HAS NO COMPRESION ON ONE CYLINDER AND THE MIDDLE ONE IS WEAK AND THE MAG ONE FEELS FINE
Ooops on the caps lock sorry
is the mag #1 cylinder
It may be inheretly a bad system but it does have its sides too. You will have to run fatter jetting to keep it from coming on, but the guesswork lies in the clutching, so the clutching doesn't "lug" the motor enough to create detonation that sets it off.
xsivhp
Active member
Drain the gas and run it in your car ...
carkashoo said:
It may not be inheretly a bad system but it does have its sides too. You will have to run fatter jetting to keep it from coming on, but the guesswork lies in the clutching, so the clutching doesn't "lug" the motor enough to create detonation that sets it off.
Skidooslayer687
Member
i dont see how it is a bad system at all.....to me the benefits are worth it compared to the downfalls. If it does go off... something is not right in my experience. I had issues with mine last year but corrected the problem. I was loading the motor to much with the clutching I was running and I was running a little lean. IMO if it goes off there is something not right going on inside the engine and I would MUCH rather know about it at the time and maybe be able to prevent costly repairs. I realize that it will not always prevent burndowns and everything but it is a good system IMO
bluemonster1
LIFE MEMBER ONLY ONCE!!!
Dcs
interesting read on the 2002 SRX
Found this article,thought I would post it for you 2002 SRX owners:
Top Performance: SRX
Yamaha states that the SRX is based on industry-leading engine technology like self-cleaning power valves, 3D ignition system, liquid-heated flatslide carbs and new for this year is an automatic detonation control system.
The SRX is for the go-quick guy. Based on our 11th annual Shoot-Out results the SRX can zip through a quarter mile in nearly 12 seconds flat. That was the best out-of-box experience we've seen at any Shoot-Out. So the performance is real.
Yamaha's Detonation Control System allows leaner production carb settings to reliably produce increased power. Since the mix is leaner, the sled gets improved fuel efficiency.
The DCS monitors combustion vibration for signs of possible detonation, which may come from poor fuel, water or contaminants in the fuel. When detonation problems are detected, the ignition timing adjusts until detonation ceases.
When the DCS reacts, you get up to three stages of action:
1. Upon initial detection, the ignition timing retards 3 degrees;
2. If detonation continues, the timing sets back 6 degrees and you see a quick flash from the console mounted warning light;
3. If engine-damaging levels prevail, the ignition reduces top revs to a "limp home" mode of 6400 revs and the indicator lamp continues to flash. When the detonation stops, the system automatically resets itself.
We found when test riding an SRX with regular grade fuel and jetting set 10 jets too lean for Midwestern riding conditions that the sled automatically retarded itself. When we held the throttle wide open in spite of the monitored warning, the sled backed down to 6400 revs, reset the ignition and then climbed back out until the jetting and low grade gas once again required a sensor reaction. We couldn't burn the engine down. And we were trying. This will most likely be a coming feature for all future sleds as it beats the Polaris dual mode switch in peace of mind for owners.
Key 2002 SRX features:
• Dual bulb halogen headlamps;
• 145 horsepower, 700cc Power Valve-equipped three-into-three triple;
• Dual-piston hydraulic brake with inner ventilated rotor for improved cooling and stopping power;
• ProAction chassis and suspension systems for flat cornering and high speed performance;
• CNC machined exhaust ports;
• Powder metal forged pistons;
• 300 watt ignition with 3-D timing;
• Plastic skis;
• End Goal: Maximum horsepower and quick accelerating machine for very competitive riders.
Found this article,thought I would post it for you 2002 SRX owners:
Top Performance: SRX
Yamaha states that the SRX is based on industry-leading engine technology like self-cleaning power valves, 3D ignition system, liquid-heated flatslide carbs and new for this year is an automatic detonation control system.
The SRX is for the go-quick guy. Based on our 11th annual Shoot-Out results the SRX can zip through a quarter mile in nearly 12 seconds flat. That was the best out-of-box experience we've seen at any Shoot-Out. So the performance is real.
Yamaha's Detonation Control System allows leaner production carb settings to reliably produce increased power. Since the mix is leaner, the sled gets improved fuel efficiency.
The DCS monitors combustion vibration for signs of possible detonation, which may come from poor fuel, water or contaminants in the fuel. When detonation problems are detected, the ignition timing adjusts until detonation ceases.
When the DCS reacts, you get up to three stages of action:
1. Upon initial detection, the ignition timing retards 3 degrees;
2. If detonation continues, the timing sets back 6 degrees and you see a quick flash from the console mounted warning light;
3. If engine-damaging levels prevail, the ignition reduces top revs to a "limp home" mode of 6400 revs and the indicator lamp continues to flash. When the detonation stops, the system automatically resets itself.
We found when test riding an SRX with regular grade fuel and jetting set 10 jets too lean for Midwestern riding conditions that the sled automatically retarded itself. When we held the throttle wide open in spite of the monitored warning, the sled backed down to 6400 revs, reset the ignition and then climbed back out until the jetting and low grade gas once again required a sensor reaction. We couldn't burn the engine down. And we were trying. This will most likely be a coming feature for all future sleds as it beats the Polaris dual mode switch in peace of mind for owners.
Key 2002 SRX features:
• Dual bulb halogen headlamps;
• 145 horsepower, 700cc Power Valve-equipped three-into-three triple;
• Dual-piston hydraulic brake with inner ventilated rotor for improved cooling and stopping power;
• ProAction chassis and suspension systems for flat cornering and high speed performance;
• CNC machined exhaust ports;
• Powder metal forged pistons;
• 300 watt ignition with 3-D timing;
• Plastic skis;
• End Goal: Maximum horsepower and quick accelerating machine for very competitive riders.
SiR X700
New member
great article
Great article. I wish my 02 had self-cleaning powervalves. Seems like I need to do mine every 1200 --1500 miles. LOL
Great article. I wish my 02 had self-cleaning powervalves. Seems like I need to do mine every 1200 --1500 miles. LOL
02srxrocket
New member
- Joined
- Nov 27, 2005
- Messages
- 7
What made the power valves on the 02 srx's " self-cleaning" ? And were all of the vipers self cleaning as well?
bluemonster1
LIFE MEMBER ONLY ONCE!!!
maybe Yamaha should do a recall on those not working self cleaning power valves.