EXECTIVE Posted September 10, 2014 #1 Posted September 10, 2014 went to a brand new dealership the other day asked for a price on valve adjustment. they said they had a new electronic carb tuner that reads the pulses of the engine and they can tell by the lines on the chart if any valves are out of adjustment and even if they need to be looked at, are they pulling my leg....or could this be true ? I have a 2000 mm rsv 51,000 miles...
Flyinfool Posted September 10, 2014 #3 Posted September 10, 2014 My vote is you need to find a new dealer.
djh3 Posted September 11, 2014 #5 Posted September 11, 2014 Sure. By the way I got some land down over by me thats really good fishing. Honest :fingers-crossed-emoMe thinks he's pulling your leg.
Seaking Posted September 11, 2014 #6 Posted September 11, 2014 went to a brand new dealership the other day asked for a price on valve adjustment. they said they had a new electronic carb tuner that reads the pulses of the engine and they can tell by the lines on the chart if any valves are out of adjustment and even if they need to be looked at, are they pulling my leg....or could this be true ? I have a 2000 mm rsv 51,000 miles... Are they still gonna charge you a pretty penny to test it out? (trying to arch an eyebrow like The Rock.. the incredulous look thing...)
Yammer Dan Posted September 11, 2014 #7 Posted September 11, 2014 IF?? That would be great but.......I'd be dealing elsewhere!!
Flyinfool Posted September 11, 2014 #8 Posted September 11, 2014 To be fair it is theoretically possible to devise such an electronic contraption. It would have to connect up to all 4 sync ports and by monitoring the vacuum/pressure pulses you could determine the total duration that the valve is open. As the valve train wears on these engines the clearance gets smaller which would cause the duration to get longer. The same would hold true on the exhaust side. They would need to connect up to each of the 4 exhaust pipes (is there even a port existing to do this?) to monitor the pressure pulses to determine the exact moment that the valves open or close. Since we have 4 valves per cylinder, there are 2 intake valves opening and closing at the same time, one of these could be out but be masked by the other one that is not out, because something opened and closed at the right time. Again same holds true for the exhaust. The difficulty would be to be able to detect that very first moment when the valve just barely starts to open by monitoring a pressure change that is some distance from the valve. When that valve is just opening by less than a thousandth of an inch, is there even a measurable change in pressure several inches from that valve where the monitor would be hooked up? I can see with modern electronics and computers that the system could detect valves that are way out of whack, but I strongly doubt that it is possible to detect valves that are only slightly out of spec either high or low.
Yammer Dan Posted September 11, 2014 #9 Posted September 11, 2014 Jeff you are thinking too Much!!! Now that ya planted the seed how am I supposed to sleep tonight??? Sheech.....
MikeWa Posted September 12, 2014 #11 Posted September 12, 2014 Yes and no. These things can read pulses and tell if compression is low or if there is a misfire. However valve adjustment can be out of spec before it starts to effect engine operation. They are putting to much faith in their new tester. Mike
dacheedah Posted September 12, 2014 #12 Posted September 12, 2014 Ok note to yamaha for the new 2019 fuel injected, self adjusting venture trike
Flyinfool Posted September 12, 2014 #13 Posted September 12, 2014 Yes and no. These things can read pulses and tell if compression is low or if there is a misfire. However valve adjustment can be out of spec before it starts to effect engine operation. They are putting to much faith in their new tester. Mike Hehe Thats kind of what I said or at least meant, but I needed a lot more words....... Maybe I've been reading to many of Cowpucs posts......
EXECTIVE Posted September 12, 2014 Author #14 Posted September 12, 2014 thank you all for the reply's....it sounded strange to me...but I was was wishing it was true at $125.00 and 30 min. test would of been great.
Kirby Posted September 12, 2014 #15 Posted September 12, 2014 Chances are at 51k miles you would have 1 or 2 at least out of 16 valves that after spending $125.00 for checking, you would still have to go through the process of setting the clearances on and to have a shop do that also would have cost mega bucks. Best thing IMHO is break it down and be sure its done right all around. This way takes all the guess work out of the picture. Just my:2cents: worth.
Neil86 Posted September 12, 2014 #16 Posted September 12, 2014 Also over time the cover gasket rubber hardens and tend to develop cracks and start seeping oil. If you are replacing gaskets might as well check/set clearances as 90% of the work is done.
YamahaLarry Posted September 12, 2014 #17 Posted September 12, 2014 To be fair it is theoretically possible to devise such an electronic contraption. It would have to connect up to all 4 sync ports and by monitoring the vacuum/pressure pulses you could determine the total duration that the valve is open. As the valve train wears on these engines the clearance gets smaller which would cause the duration to get longer. The same would hold true on the exhaust side. They would need to connect up to each of the 4 exhaust pipes (is there even a port existing to do this?) to monitor the pressure pulses to determine the exact moment that the valves open or close. Since we have 4 valves per cylinder, there are 2 intake valves opening and closing at the same time, one of these could be out but be masked by the other one that is not out, because something opened and closed at the right time. Again same holds true for the exhaust. The difficulty would be to be able to detect that very first moment when the valve just barely starts to open by monitoring a pressure change that is some distance from the valve. When that valve is just opening by less than a thousandth of an inch, is there even a measurable change in pressure several inches from that valve where the monitor would be hooked up? I can see with modern electronics and computers that the system could detect valves that are way out of whack, but I strongly doubt that it is possible to detect valves that are only slightly out of spec either high or low. My exact thoughts. I don't know why Yammer Dan is giving you so much static.
etcswjoe Posted September 12, 2014 #18 Posted September 12, 2014 My exact thoughts. I don't know why Yammer Dan is giving you so much static. Have you not meet Dan?
rickardracing Posted September 13, 2014 #19 Posted September 13, 2014 Jeff, Jeff, Jeff......you talk just like an engineer............
Flyinfool Posted September 14, 2014 #20 Posted September 14, 2014 Jeff, Jeff, Jeff......you talk just like an engineer............ sorry...... For my punishment you will have to force me to eat ice creammmmm...........
Yammer Dan Posted September 15, 2014 #21 Posted September 15, 2014 My exact thoughts. I don't know why Yammer Dan is giving you so much static. Have you met Jeff????
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now