You use the torch to wave propane around all the potential vacuum leaks. If you hit a leak the propane is drawn in and the idle goes up. Very easy to pin point a spot as opposed to using carb spray that goes everywhere. Since your pushing out the propane under pressure you can stick the torch under a hose and spray it up on the bottom of it. I had the S hose crack and no amount of spraying carb cleaner showed up a leak, 5 minutes with the propane and I found the leak since I stuck it under the TB and the idle jumped. No messy carb cleaner on the engine and no messy mustard either. :0 Larry White Knight 1991 Crystal White #99 CSP Silver Bullet 1992 Silverstone #17 SM2 FM I+ Turbo Honey B 1992 Sunburst Yellow #99 SM2L JR Supercharger Whooosh 2004 Titanium Mazdaspeed MX-5 LowCountry Miata <http://www.lowcountrymiataclub.net> http://www.lowcountrymiataclub.net Masters Miata RAGS 074 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bryan Wyatt Sent: Monday, September 15, 2008 5:45 PM To: [email protected] Subject: RE: Help diagnosing an intake leak
I'm not criticizing you, Larry. I just have trouble picturing what you do with said torch, is all. -Bryan --- On Mon, 9/15/08, Larry Alster <[EMAIL PROTECTED]> wrote: From: Larry Alster <[EMAIL PROTECTED]> Subject: RE: Help diagnosing an intake leak To: [EMAIL PROTECTED], [email protected] Date: Monday, September 15, 2008, 4:21 PM Works fine, I?m not the only one to use it. Why would it be any different than those people that spray all that aerosol carb cleaner around in the engine bay to find a vacuum leak?? This is probably safer since the stuff dissipates, is easy to control and actually might find the leak. Larry White Knight 1991 Crystal White #99 CSP Silver Bullet 1992 Silverstone #17 SM2 FM I+ Turbo Honey B 1992 Sunburst Yellow #99 SM2L JR Supercharger Whooosh 2004 Titanium Mazdaspeed MX-5 LowCountry Miata <http://www.lowcountrymiataclub.net> http://www.lowcountrymiataclub.net Masters Miata RAGS 074 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bryan Wyatt Sent: Monday, September 15, 2008 4:18 PM To: [email protected] Subject: RE: Help diagnosing an intake leak I have to admit, I'm having trouble picturing it myself! -Bryan --- On Mon, 9/15/08, Larry Alster <[EMAIL PROTECTED]> wrote: From: Larry Alster <[EMAIL PROTECTED]> Subject: RE: Help diagnosing an intake leak To: "'Wiseman, Curtis J'" <[EMAIL PROTECTED]>, [email protected] Date: Monday, September 15, 2008, 3:33 PM Nah, you're not pumping gallons of propane in there, your using the smallest amount that comes out of the torch and since it's heavier than air it drops out of the engine bay quickly. Larry White Knight 1991 Crystal White #99 CSP Silver Bullet 1992 Silverstone #17 SM2 FM I+ Turbo Honey B 1992 Sunburst Yellow #99 SM2L JR Supercharger Whooosh 2004 Titanium Mazdaspeed MX-5 LowCountry Miata http://www.lowcountrymiataclub.net Masters Miata RAGS 074 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Wiseman, Curtis J Sent: Monday, September 15, 2008 3:20 PM To: Larry Alster; [email protected] Subject: RE: Help diagnosing an intake leak I did notice and I thought "FOOM". -----Original Message----- From: Larry Alster [mailto:[EMAIL PROTECTED] Sent: Monday, September 15, 2008 2:18 PM To: Wiseman, Curtis J; [EMAIL PROTECTED]; [email protected] Subject: RE: Help diagnosing an intake leak Notice I specified unlit. It is scary but I have had a few responses through the years about how do you not burn things!! Larry White Knight 1991 Crystal White #99 CSP Silver Bullet 1992 Silverstone #17 SM2 FM I+ Turbo Honey B 1992 Sunburst Yellow #99 SM2L JR Supercharger Whooosh 2004 Titanium Mazdaspeed MX-5 LowCountry Miata http://www.lowcountrymiataclub.net Masters Miata RAGS 074 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Wiseman, Curtis J Sent: Monday, September 15, 2008 3:13 PM To: Larry Alster; [EMAIL PROTECTED]; [email protected] Subject: RE: Help diagnosing an intake leak Do you like the "running with scissors" method too? :-) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry Alster Sent: Monday, September 15, 2008 2:04 PM To: [EMAIL PROTECTED]; [email protected] Subject: RE: Help diagnosing an intake leak Unlit propane torch is my favorite method. Larry White Knight 1991 Crystal White #99 CSP Silver Bullet 1992 Silverstone #17 SM2 FM I+ Turbo Honey B 1992 Sunburst Yellow #99 SM2L JR Supercharger Whooosh 2004 Titanium Mazdaspeed MX-5 LowCountry Miata http://www.lowcountrymiataclub.net Masters Miata RAGS 074 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Matt Bennett Sent: Monday, September 15, 2008 10:43 AM To: [email protected] Subject: Help diagnosing an intake leak After what Ray pointed out to me (below), I looked at some old DLL logs and saw that my Idle MAP reading that is now about 70 used to be in the 40 range. So I slapped myself around a bit and started to look for a vacuum leak. I haven't found anything particularly bad. Anyone have any tip or tricks on looking for an intake leak? I tried pressurizing the intake to a few PSI with my compressor and listening for hissing, but it has been really hard to localize- possibly going through an open intake valve?. One thing that I was wondering- how much of the stock 1.8l engine's cycle has all of the intake valves closed? I did find a better place to put the fuel pressure regulator's vacuum hose, but wiggling stuff around hasn't brought me any closer to bringing the vacuum down to a more appropriate value. Regards, Matt '96 with prototype Ubercharger On Sun, September 7, 2008 1:12 pm, Ray Ayala wrote: > The log shows the idle switch signal on even when the map signal show that > either the throttle is open or there's a big intake air leak. The idle > switch signal kills the fuel completely when rpm is above the idle control > range (~1850 rpm). > > > ----- Original Message ----- > From: "Matt Bennett" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Saturday, September 06, 2008 7:39 PM > Subject: Bucking, DLL help > > >> Howdy folks, I'm trying to figure out my latest issue, I seem to >> remember >> this type of problem being discussed before, but I didn't take adequate >> notes. Right now, the most annoying problem I have is that my car has >> some very abrupt on/off transitions- also the "idle oscillation" is >> pretty >> bad. You can see both of these characteristics in this (really long) >> log: >> >> <http://www.hazmat.com/~mjb/projects/miata/DataLogs/2008-09-06a.bin> >> >> The vitals on this car: >> 1996 with prototype Ubercharger (intercooled, with air temperature >> sensor) >> 550cc Injectors >> Vishnu Dual feed fuel rail >> Link ECU (non OBD- I believe that this is referred to as a 94-95 Link) >> AEM WB02 >> Stock engine internals >> Setup for (but not installed) NB02 >> >> >> Another thing I'm thinking of- I realize that tuning on the road is >> difficult, dangerous, and often runs afoul of the law- has anyone >> created >> a script for the most cost effective way to use a dyno? The one that I >> can rent time on is a brake dyno (not a Dynojet). I want to tune for 1) >> emissions and 2) power with drivability- and 1 and 2 don't have to be >> the >> same map :) >> >> The vast majority of the adjustments appear to be with fuel- is it >> because >> changing fuel zones is easier and more effective than adjusting timing? >> Or is timing just a lot more dangerous to play with. >> >> With the 94-95 link, can I have both WB and NB O2 sensors logged? I >> realize only one will actually be adjusting settings. If I tune for one >> sensor, will I need to change maps when I move between sensors, or can I >> just do it through the Link keypad? >> >> I realize I need to sit down with the tuning manuals from FM- I went >> looking on Flyin' Miata's site and didn't find the Link tuning manual- >> I've got an old copy- what is the latest revision? >> >> Regards, >> >> Matt Bennett >> Austin, TX >> '96 with prototype Ubercharger >> _______________________________________________ >> Miatapower mailing list >> [email protected] >> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
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