You might be right, but don't forget in the Locost style car you can touch the end of the exhaust pipe from the drivers seat. It does not smell rich, and no throttle position will get it to start. But I will get an AFPR on order to get the fuel pressure back to 59psi.
Graham On Sun, Apr 1, 2012 at 8:16 PM, Larry Alster <[email protected]> wrote: > High fuel pressure is going to cause the injector to flow more which is > going to cause a rich condition. Not able to handle the extra fuel on hot > restart??**** > > ** ** > > ** ** > > ** ** > > ** ** > > Larry Alster**** > > ** ** > > 91 Miata White Knight**** > > 92 Miata Silver Bullet (Sold but not forgotten)**** > > 92 Miata Honey B**** > > 04 MSM MX-5 Whooosh**** > > 06 WRX STi Subie**** > > 08 Z06 Corvette (As yet unnamed)**** > > ** ** > > *From:* Bill Cardell [mailto:[email protected]] > *Sent:* Sunday, April 01, 2012 9:01 PM > *To:* fast G > *Cc:* Larry Alster; [email protected] > > *Subject:* Re: Miata based Lotus 7**** > > ** ** > > Sorry, I was just mentioning that in passing as another thing to fix. 75 > psi may be beyond the trim range of the closed loop system, plus it will > way over fuel when open loop. > > Bill Cardell**** > > Owner, Flyin' Miata**** > > Www.flyinmiata.com**** > > 1-800-FLY-MX5s**** > > 970-464-5600**** > > ** ** > > > On Apr 1, 2012, at 5:48 PM, "fast G" <[email protected]> wrote:**** > > It's probably that high because of the fuel pump that has been installed, > So I can swap pump or add a AFPR, I don't really see a difference between > the 2 solutions, but the AFPR is much easier to install than swapping pumps. > **** > > ** ** > > But I still don't understand how the extra fuel pressure is screwing up > the hot start. **** > > ** ** > > Graham**** > > On Sun, Apr 1, 2012 at 7:44 PM, Larry Alster <[email protected]> wrote:**** > > If it were my car I'd want to know why it was too high and fix that rather > than throw a band aid on the problem with a AFPR**** > > **** > > JMHO**** > > **** > > **** > > **** > > **** > > Larry Alster**** > > **** > > 91 Miata White Knight**** > > 92 Miata Silver Bullet (Sold but not forgotten)**** > > 92 Miata Honey B**** > > 04 MSM MX-5 Whooosh**** > > 06 WRX STi Subie**** > > 08 Z06 Corvette (As yet unnamed)**** > > **** > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *fast G > *Sent:* Sunday, April 01, 2012 8:42 PM > *To:* Bill Cardell > *Cc:* [email protected]**** > > > *Subject:* Re: Miata based Lotus 7**** > > **** > > It does have the stock ECU and injectors. But how would the excessive > pressure screw up the hot start?**** > > **** > > So you think I should get an adjustable Fuel Pressure regulator so I can > get it back down to 59?**** > > **** > > Graham **** > > **** > > On Sun, Apr 1, 2012 at 7:35 PM, Bill Cardell <[email protected]> wrote:* > *** > > If you're running stock ecu and injectors it won't be happy with 75 psi. > Stock is 59 psi.**** > > > > Bill Cardell**** > > Owner, Flyin' Miata**** > > Www.flyinmiata.com**** > > 1-800-FLY-MX5s**** > > 970-464-5600**** > > **** > > > On Apr 1, 2012, at 4:06 PM, "fast G" <[email protected]> wrote:**** > > I checked the fuel pressure as it leave the tank, it's 75psi will a > running engine. I have not been able to re-create the hot start issue, the > car is still up on saw horses, but I should have it back on the ground next > weekend. I was kinda hoping that the fuel pressure would be low as it would > give me something to fix. What would be your best guess?**** > > **** > > Graham**** > > **** > > On Sun, Apr 1, 2012 at 6:05 PM, fast G <[email protected]> wrote:**** > > **** > > **** > > On Tue, Mar 27, 2012 at 2:27 PM, Ken Bogart <[email protected]> wrote:* > *** > > I would plumb one inline on the hose going to the fuel rail. **** > > **** > > First determine if your tank is venting by checking gas cap. I would > release the pressure and see if it starts. Is it under pressure or vacuum? > **** > > > Ken Bogart > ----------------------------------------------------- > 96 Montego Blue FFS Coldside (His) > 97 Black & Tan (Hers) > 90 Crystal White (sons) > ------------------------------------------------------ > http://www.miatacare.com > http://www.cincimiata.com > MiataMail.com list owner **** > > On Tue, Mar 27, 2012 at 3:24 PM, fast G <[email protected]> wrote:**** > > > > I am not sure that I have any FPR at all. I can see nothing in the tank > apart from the pump. It should be running again this week. What is the > simplest way to get a fuel pressure gauge into the fuel line? **** > > **** > > Graham **** > > **** > > On Tue, Mar 27, 2012 at 2:10 PM, Ken Bogart <[email protected]> wrote:* > *** > > Have you checked fuel pressure under the running, hot and not so hot > conditions?**** > > **** > > The NB has a returnless system, the FPR is essentially on the fuel pump > end. The dampener is supposed to accommodate pulsations, but does not > control pressure. **** > > **** > > What if you loosen gas cap? does it suck or blow under this condition?**** > > > Ken Bogart > ----------------------------------------------------- > 96 Montego Blue FFS Coldside (His) > 97 Black & Tan (Hers) > 90 Crystal White (sons) > ------------------------------------------------------ > http://www.miatacare.com > http://www.cincimiata.com > MiataMail.com list owner **** > > **** > > On Tue, Mar 27, 2012 at 2:59 PM, Helsel, Walt <[email protected]> wrote: > **** > > Good, someone that knows what they are talking about. J**** > > **** > > (I haven’t looked under the hood of a Miata in 11 months, and last time I > did it had a half finished V8 in there… )**** > > **** > > Wallyman**** > > **** > > *From:* Bill Cardell [mailto:[email protected]] > *Sent:* Tuesday, March 27, 2012 2:55 PM > *To:* Helsel, Walt > *Cc:* fast G; [email protected] > *Subject:* Re: Miata based Lotus 7**** > > **** > > More likely it's an nb pulse damper, which is the same footprint. > > Bill Cardell**** > > Owner, Flyin' Miata**** > > Www.flyinmiata.com**** > > 1-800-FLY-MX5s**** > > 970-464-5600**** > > **** > > > On Mar 27, 2012, at 12:13 PM, "Helsel, Walt" <[email protected]> wrote:* > *** > > Your “surge unit” in photo 3 sure looks like a stock Miata Fuel Pressure > Regulator to me…**** > > **** > > Wallyman**** > > **** > > **** > > **** > > *From:* [email protected] > [mailto:[email protected]] *On Behalf Of *fast G > *Sent:* Tuesday, March 27, 2012 1:16 PM > *To:* [email protected] > *Subject:* Miata based Lotus 7**** > > **** > > I am hoping you guys can help me because I am really confused. **** > > **** > > I have a Miata powered Locost 7 based on a 2002 1.8 Miata (return less > injection). The car has a hot start issue, it runs well, if I switch it off > it re-starts fine. If I switch it all and wait 5 mins it will not restart > until it cools down, say 20 mins. I got the car built so I do not > understand why the fuel system is plumbed the way it is. But to me it looks > totally wrong. To me it looks like the feed line goes to the fuel surge > unit, the return line goes to the evaporator canister, and the vent line is > just vented to the atmosphere. I am not sure I have a fuel pressure > regulator at all. **** > > **** > > The first picture is of the tank **** > > **** > > > http://s562.photobucket.com/albums/ss63/fastgxc/?action=view¤t=2012-03-24115835.jpg > **** > > **** > > The hose at 2 o'clock goes to the evaporation canister. 4 o'clock is the > fuel feed. 9 o'clock in a vent line, just vented to atmosphere. **** > > **** > > Picture 2 is the evaporation canister were the 2 o'clock hose goes.**** > > **** > > > http://s562.photobucket.com/albums/ss63/fastgxc/?action=view¤t=2012-03-24115905.jpg > **** > > **** > > Picture 3 is the surge unit.were the 4 o'clock hose goes**** > > **** > > > http://s562.photobucket.com/albums/ss63/fastgxc/?action=view¤t=2012-03-24115921.jpg > **** > > **** > > So I am thinking that I don't actually have a fuel pressure regulator at > all. **** > > **** > > I am looking for a plan of action to work all this out.**** > > **** > > What do you think?**** > > **** > > Graham **** > > **** > > **** > > This e-mail and any attachments contain URS Corporation confidential > information that may be proprietary or privileged. If you receive this > message in error or are not the intended recipient, you should not retain, > distribute, disclose or use any of this information and you should destroy > the e-mail and any attachments or copies.**** > > _______________________________________________ > 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
