Good, someone that knows what they are talking about. ☺

(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<http://Www.flyinmiata.com>
1-800-FLY-MX5s
970-464-5600


On Mar 27, 2012, at 12:13 PM, "Helsel, Walt" 
<[email protected]<mailto:[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]> 
[mailto:[email protected]]<mailto:[mailto:[email protected]]>
 On Behalf Of fast G
Sent: Tuesday, March 27, 2012 1:16 PM
To: [email protected]<mailto:[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&current=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&current=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&current=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


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