New TSB 3/14/08
03-26-2008, 08:50 AM
#77
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I've used both Sefoam and Mazda's engine cleaner (was given a free bottle) on my Miata before. I think it helps de-carbon, especially if you let it sit in the cylinders overnight, but I've also just used water as well--some say it does just as good a job. Don't know if that's advisable on a rotary but it would emiminate concerns about the effect of the seafoam on the cat, I suppose.
03-26-2008, 10:24 AM
#78
doin' the bull dance
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Just plan on changing your oil immediately afterwards.
I'd suggest using your idle vacuum as a gauge.
If you do the procedure and your vacuum immediately goes up, you are done.
If it doesn't, do it a second time.
If it still doesn't go up, your compression issues aren't carbon-related.
I'd suggest using your idle vacuum as a gauge.
If you do the procedure and your vacuum immediately goes up, you are done.
If it doesn't, do it a second time.
If it still doesn't go up, your compression issues aren't carbon-related.
tks,
EDIT: also - which method is best: water treatment, seafoam, or this mazda cleaner (which I assume is the same as seafoam)?
Last edited by dmc27; 03-26-2008 at 10:29 AM.
03-26-2008, 10:49 AM
#79
Lubricious
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PS How will the engine start after the 1 hour soaking when the whole oil film is washed away and the spark plugs are soaked wet? If you do it yourself, I suggest to remove the spark plugs and drain most of the dirty cleaner after the 1 hour soaking - dry and reinstall the plugs, then try to start the car (be prepared to jump started with another vehicle, just in case).
Last edited by Nubo; 03-26-2008 at 10:53 AM.
03-26-2008, 11:24 AM
#80
What was meant was to use the change in vacuum pressure at idle to gauge how well the cleaning process removed carbon. Carbon deposits cause additional airflow constriction and therefore lowers vacuum pressure (Boyles' Law; related to venturi action; a gas's volume is inversely proportional to the applied pressure) and in turn an abnormally high idle rpm to compensate. If all goes well you should notice a return to normal idle rpm.
Seafoam or Mazda's similar product is preferred if significant carbon build up.
Seafoam or Mazda's similar product is preferred if significant carbon build up.
03-26-2008, 12:26 PM
#84
Do you actually have a [suspected carbon buildup induced] loss of power, or are you just being proactive?
If the latter, just use say STP gas treatment every once in awhile (or seafoam in the tank), redline frequently, a quality detergent gasoline e.g. Mobil, and you'll be fine.
Keep in mind that the "loss of power" prescribed treatment is fairly severe, potentially shortening the life of your catalytic converter, and therefore should not be done if not necessary.
If the latter, just use say STP gas treatment every once in awhile (or seafoam in the tank), redline frequently, a quality detergent gasoline e.g. Mobil, and you'll be fine.
Keep in mind that the "loss of power" prescribed treatment is fairly severe, potentially shortening the life of your catalytic converter, and therefore should not be done if not necessary.
Last edited by Huey52; 03-26-2008 at 12:34 PM.
03-26-2008, 12:32 PM
#85
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Proactive. I hadn't decided to do any of this, but want to understand it well enough to consider it, and do it if I think it's necessary. Shell gas - always. Premix (only recently.)
Mostly my prevention consists of an intentional 16-18 mpg driving style.
Mostly my prevention consists of an intentional 16-18 mpg driving style.
03-26-2008, 12:39 PM
#86
As Homer would say ..... I like your style! 
btw: here's some food for thought; Mother Nature compensates for flow restrictions by simply increasing the flow rate (again, venturi). Why is it then that when a highway reduces from three lanes to two we don't simply do the same? Me and my '8 certainly try, but my [apparently] non-engineer fellow motorists just don't seem to oblige.
btw: here's some food for thought; Mother Nature compensates for flow restrictions by simply increasing the flow rate (again, venturi). Why is it then that when a highway reduces from three lanes to two we don't simply do the same? Me and my '8 certainly try, but my [apparently] non-engineer fellow motorists just don't seem to oblige.
Last edited by Huey52; 03-26-2008 at 12:44 PM.
03-26-2008, 01:42 PM
#89
No means yes
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As Homer would say ..... I like your style!
btw: here's some food for thought; Mother Nature compensates for flow restrictions by simply increasing the flow rate (again, venturi). Why is it then that when a highway reduces from three lanes to two we don't simply do the same? Me and my '8 certainly try, but my [apparently] non-engineer fellow motorists just don't seem to oblige.
btw: here's some food for thought; Mother Nature compensates for flow restrictions by simply increasing the flow rate (again, venturi). Why is it then that when a highway reduces from three lanes to two we don't simply do the same? Me and my '8 certainly try, but my [apparently] non-engineer fellow motorists just don't seem to oblige.
This reminds me - I heard of a recent research paper about the formation of traffic jams and "harmonic resonance" in the traffic flow (think, when some *** blips his brakes for no reason, and you see the "wave" of brake lights propagate back). Anyone heard anything about this?
03-26-2008, 03:08 PM
#90
Lubricious
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This reminds me - I heard of a recent research paper about the formation of traffic jams and "harmonic resonance" in the traffic flow (think, when some *** blips his brakes for no reason, and you see the "wave" of brake lights propagate back). Anyone heard anything about this?
http://www.eskimo.com/~billb/amateur.../traffic1.html
03-26-2008, 10:31 PM
#91
INDY RX8 CLUB - Officer
Got my car back today-Decarb'd, Flashed, and looks like I got new plugs too. It lists:
1 0000-77-A86 ZOOM ENG CLNR
2 N3Y2-18-110 SPARK PLUG
2 0000-18-N3Y1 SPARK PLUG
It also lists the Flash.
I just spent 100 bucks and put new ones in about 6000 miles ago... Oh well, free is free and I am at 58,700 so the plugs could have been charged to me as a wear item. As for performance, I had no time to really drive it much, but idle seemed slightly improved. I will post more tommorow once I ring her out.
1 0000-77-A86 ZOOM ENG CLNR
2 N3Y2-18-110 SPARK PLUG
2 0000-18-N3Y1 SPARK PLUG
It also lists the Flash.
I just spent 100 bucks and put new ones in about 6000 miles ago... Oh well, free is free and I am at 58,700 so the plugs could have been charged to me as a wear item. As for performance, I had no time to really drive it much, but idle seemed slightly improved. I will post more tommorow once I ring her out.
Last edited by max5roadster; 03-26-2008 at 10:40 PM.
03-26-2008, 10:39 PM
#92
No means yes
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BTW, this reminded me - the other day I was driving down the turnpike and a state trooper was blocking traffic by zig zagging across all 3 lanes of the highway. He created a traffic jam then just left down an exit ramp. WTF??
03-26-2008, 11:15 PM
#95
RB Flash is based on Mazda's flash, what RB did was they *lean* the whole RPM range to get more power.
Mazda's flash is like what 14.7:1 ? I forgot.
I dunno ... I got my flash like hmm a year ago ? I WANT TO MAKE MY MONEYS WORTH ! ARGH !
03-26-2008, 11:16 PM
#96
INDY RX8 CLUB - Officer
NYC, just askin-why ditch the RB Flash? I wouldn't if I had it already, I'd just keep premixin like I've always done. I think a lot of people are getting more ummphh because of the trims being reset. My car only runs a correction factor of less than 1-2%, (according to the tech who pulled the trim values for me) and I still notice much improved accelleration (esp in 3rd gear) after pulling the ROOM fuse.
03-26-2008, 11:20 PM
#98
NYC, just askin-why ditch the RB Flash? I wouldn't if I had it already, I'd just keep premixin like I've always done. I think a lot of people are getting more ummphh because of the trims being reset. My car only runs a correction factor of less than 1-2%, (according to the tech who pulled the trim values for me) and I still notice much improved accelleration (esp in 3rd gear) after pulling the ROOM fuse.
My car pulls really strong, even b4 I did RB flash(well of course even stronger with RB flash).
Will see what happens later.
Well, I premix so I dont really care about that.
but its always good to have more lube.