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]> > [email protected]> wrote: > >> >> >> On Tue, Mar 27, 2012 at 2:27 PM, Ken Bogart < <[email protected]> >> [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.miatacare.com >>> <http://www.cincimiata.com>http://www.cincimiata.com >>> MiataMail.com list owner >>> >>> >>> On Tue, Mar 27, 2012 at 3:24 PM, fast G < <[email protected]> >>> [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]> >>>> [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.miatacare.com >>>>> <http://www.cincimiata.com>http://www.cincimiata.com >>>>> MiataMail.com list owner >>>>> >>>>> >>>>> On Tue, Mar 27, 2012 at 2:59 PM, Helsel, Walt < <[email protected]> >>>>> [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]> >>>>>> [email protected]] >>>>>> *Sent:* Tuesday, March 27, 2012 2:55 PM >>>>>> *To:* Helsel, Walt >>>>>> *Cc:* fast G; <[email protected]>[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**** >>>>>> >>>>>> <http://Www.flyinmiata.com>Www.flyinmiata.com**** >>>>>> >>>>>> 1-800-FLY-MX5s**** >>>>>> >>>>>> 970-464-5600**** >>>>>> >>>>>> ** ** >>>>>> >>>>>> >>>>>> On Mar 27, 2012, at 12:13 PM, "Helsel, Walt" < <[email protected]> >>>>>> [email protected]> wrote:**** >>>>>> >>>>>> Your “surge unit” in photo 3 sure looks like a stock Miata Fuel >>>>>> Pressure Regulator to me…**** >>>>>> >>>>>> **** >>>>>> >>>>>> Wallyman**** >>>>>> >>>>>> **** >>>>>> >>>>>> **** >>>>>> >>>>>> **** >>>>>> >>>>>> *From:* <[email protected]> >>>>>> [email protected] >>>>>> [mailto:[email protected]] *On Behalf Of *fast G >>>>>> *Sent:* Tuesday, March 27, 2012 1:16 PM >>>>>> *To:* <[email protected]>[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> >>>>>> 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> >>>>>> 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> >>>>>> 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]>[email protected] >>>>>> <http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower> >>>>>> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower**** >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Miatapower mailing list >>>>>> <[email protected]>[email protected] >>>>>> <http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower> >>>>>> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >>>>>> >>>>>> >>>>> >>>> >>>> >>>> _______________________________________________ >>>> Miatapower mailing list >>>> <[email protected]>[email protected] >>>> <http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower> >>>> 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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