Need...more...brainpower (help me get my build running plz)
#83
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Here is how the fuel system is set up:
![](https://a7.sphotos.ak.fbcdn.net/hphotos-ak-ash4/271099_203267789720568_100001120466954_553272_4178303_n.jpg)
#86
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I swapped them around once to make sure I didn't do it backwards. It is supposed to be the short line (front) is the return and the longer line (rear one) is the supply. Is my research faltered? I would certainly feel like a dip if it was and that was the source of my woes.
Also the fuel pump comes on loud and clear (it is a walbro so kinda hard to mistake if it is coming on or not).
Also the fuel pump comes on loud and clear (it is a walbro so kinda hard to mistake if it is coming on or not).
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HOLY MUTHERFUCKING COCKSUCKING SHITLICKING ASSHAT! I HAVE FUEL PRESSURE!
First I pulled the line that feeds the fpr off, attached an 8' long line to the fuel rail outlet, plugged the fpr inlet line, and turned the key to on to verify the pump was actually flowing.
Then I got gas on the paint and almost immediately melted the clearcoat off![facepalm](https://www.miataturbo.net/images/smilies/facepalm.gif)
That prompted me to make an impromptu murder bathtub out of dropcloth (plastic see through ****)
The turn of the key produced a lovely golden shower into the gas can
Then I decided to see if the system would pressurize, verify it was pressurizing, and make sure the pressure gauge on the fpr worked so I screwed it into the end of the line that was going into the gas can (while trying to keep the fuel up towards the gauge/air out of the line)
The turn of the key again made a much different sound, I could hear the pump building pressure QUICKLY and the gauge shot to 40psi almost immediately. Turned the key off and it held the pressure for a minute or two, then it worked its way down to 32psi
So I am going to go with my problem was/is fuel pressure (lackthereof). Now I need to deduce if it is the fpr or something else...although I can't reason what it could be. The FPR is new and was recommended by brain and viperormiata is using his old one without problems. Anybody know what I coulda messed up on/in it? I took all the fittings out and nothing looks fucked so I am at a loss. I am going to go play with it to see if I can render it useful.
Lastly I got a sweet golden mist when I pulled the gauge off, luckally I was wearing eye protection for this one
First I pulled the line that feeds the fpr off, attached an 8' long line to the fuel rail outlet, plugged the fpr inlet line, and turned the key to on to verify the pump was actually flowing.
Then I got gas on the paint and almost immediately melted the clearcoat off
![facepalm](https://www.miataturbo.net/images/smilies/facepalm.gif)
That prompted me to make an impromptu murder bathtub out of dropcloth (plastic see through ****)
The turn of the key produced a lovely golden shower into the gas can
Then I decided to see if the system would pressurize, verify it was pressurizing, and make sure the pressure gauge on the fpr worked so I screwed it into the end of the line that was going into the gas can (while trying to keep the fuel up towards the gauge/air out of the line)
The turn of the key again made a much different sound, I could hear the pump building pressure QUICKLY and the gauge shot to 40psi almost immediately. Turned the key off and it held the pressure for a minute or two, then it worked its way down to 32psi
So I am going to go with my problem was/is fuel pressure (lackthereof). Now I need to deduce if it is the fpr or something else...although I can't reason what it could be. The FPR is new and was recommended by brain and viperormiata is using his old one without problems. Anybody know what I coulda messed up on/in it? I took all the fittings out and nothing looks fucked so I am at a loss. I am going to go play with it to see if I can render it useful.
Lastly I got a sweet golden mist when I pulled the gauge off, luckally I was wearing eye protection for this one
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#91
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I didn't read the whole thread, but if the engine isn't started yet (and if you haven't already tried this), flip your plug wires around such that the relative positions of the 1-4 and 2-3 pairs are swapped from one side of the coil to the other.
About half the time that a new install fails to so much as give a whimper of combustion, despite having both spark and fuel, it's because of a reversal of the two ignition channels.
About half the time that a new install fails to so much as give a whimper of combustion, despite having both spark and fuel, it's because of a reversal of the two ignition channels.
#93
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I didn't read the whole thread, but if the engine isn't started yet (and if you haven't already tried this), flip your plug wires around such that the relative positions of the 1-4 and 2-3 pairs are swapped from one side of the coil to the other.
About half the time that a new install fails to so much as give a whimper of combustion, despite having both spark and fuel, it's because of a reversal of the two ignition channels.
About half the time that a new install fails to so much as give a whimper of combustion, despite having both spark and fuel, it's because of a reversal of the two ignition channels.
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Hooked up the 90 fpr on the dual feed rail, cranked, and got nothing. It is pressurizing now, I can hear it...makes a lot of hissing noise in the vicinity of the fpr. Here is the log. I actually got the camera out because I was sure this was "it"
#95
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Since i was working off the idea that you were getting to much fuel and now we know that wasnt the case try your old MSQ.
OR spray some starting fluid in and see if it fires up.
Since your %100 sure youve got spark, some starter fluid will tell us if fuel is the issue or if you need to look somewhere else.
OR spray some starting fluid in and see if it fires up.
Since your %100 sure youve got spark, some starter fluid will tell us if fuel is the issue or if you need to look somewhere else.
#96
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I'll do that tomorrow, I'm callin it a night. I am not sure if that'll prove fruitful though because I still didn't get any kind of sputter or backfire. Still sounds like it is missing one of the big 3. Also I pulled a plug and it looked pretty much the same as they looked before I identified the fuel pressure regulator was bad. I am thinking maybe the hp suel pump killed my 21yr old fpr...
Tomorrow I am going to be checking the plugs for spark again and getting everything to use the Aeromotive.
Tomorrow I am going to be checking the plugs for spark again and getting everything to use the Aeromotive.
#100
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Everything except: MS, the block, the oil pan, the crank, the coil packs, and the wiring harness kinda (was stripped down and cut for amphenol installation). O yeah, the chassis, hard lines, intercooler, piping, diverter, the cts, the ait sensor, and exhaust manifold are not new also.