94 rx7 touring no start fuel problem
#1
94 rx7 touring no start fuel problem
hey guys so ive been a big 2nd gen guy for many years and finally now own a 94 touring. with that being said i have a few questions..
first with mods that i know of..
Rebuilt 13Brew short block w/approx. 18k miles
All components (alt, manifolds, belts, pumps, etc...) have approx. 40k miles on them.
Tweakit racing idler pulley
AC & Emissions pump deleted.
SS braided oil & power steering lines
Dual oil coolers
Aftermarket Earls oil cooler
Dual Supra fuel pumps
SS braided -8 & -6 fuel lines
Rotary Works full 3" exhaust
Megan 3" DP
Portmatched LIM
-Drivetrain
Act 6 puck sprung clutch and HD pressure plate
JDM 5 speed transmission w/approx. 20k miles on it
-Suspension/Steering/Wheels:
Stance Coilovers
18x10.5 +25 XXR WHEELS
-Interior
Cobalt Wideband A/F gauge
Prosport Oil pressure, oil temp, & boost gauges
Rewired fuel pump
Relocated optima red top battery to passenger bin
-Exterior
Custom pearl white paint
Shine Auto Feed Sidesteps
Shine Auto Feed Front Bumper
99spec turn lamps
99spec tail lamps
with that being said i cannot get the car to start. i have deflooded it several times and verified the basic fuel,air,spark...
Where would you guys start as far as this goes, it will try to spit and sputter but just wont run. it does have the factory fpr
first with mods that i know of..
Rebuilt 13Brew short block w/approx. 18k miles
All components (alt, manifolds, belts, pumps, etc...) have approx. 40k miles on them.
Tweakit racing idler pulley
AC & Emissions pump deleted.
SS braided oil & power steering lines
Dual oil coolers
Aftermarket Earls oil cooler
Dual Supra fuel pumps
SS braided -8 & -6 fuel lines
Rotary Works full 3" exhaust
Megan 3" DP
Portmatched LIM
-Drivetrain
Act 6 puck sprung clutch and HD pressure plate
JDM 5 speed transmission w/approx. 20k miles on it
-Suspension/Steering/Wheels:
Stance Coilovers
18x10.5 +25 XXR WHEELS
-Interior
Cobalt Wideband A/F gauge
Prosport Oil pressure, oil temp, & boost gauges
Rewired fuel pump
Relocated optima red top battery to passenger bin
-Exterior
Custom pearl white paint
Shine Auto Feed Sidesteps
Shine Auto Feed Front Bumper
99spec turn lamps
99spec tail lamps
with that being said i cannot get the car to start. i have deflooded it several times and verified the basic fuel,air,spark...
Where would you guys start as far as this goes, it will try to spit and sputter but just wont run. it does have the factory fpr
#3
Full Member
iTrader: (3)
so its putting in fuel. your sparks are new and coils/wire are good and each spark plug is working. no leaks in air intake tubes.
Id check all these again first. I would pull out fuel lines and try and start it to see if its pushing fuel through (keep and extinguisher handy). check the sparks on each plug to see if they are nice and bright.
So your problem is just getting it to start initially?
In the past, ive had some luck with starter fluid. 1 very very very very very very quick squirt inside the UIM and poof, instant start. id let it run for a couple minutes to burn anything excess in the engine and anywhere else. then it would start under its own power.
just my 2 cents.
Id check all these again first. I would pull out fuel lines and try and start it to see if its pushing fuel through (keep and extinguisher handy). check the sparks on each plug to see if they are nice and bright.
So your problem is just getting it to start initially?
In the past, ive had some luck with starter fluid. 1 very very very very very very quick squirt inside the UIM and poof, instant start. id let it run for a couple minutes to burn anything excess in the engine and anywhere else. then it would start under its own power.
just my 2 cents.
#6
Eye In The Sky
iTrader: (2)
Join Date: Feb 2001
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You did not mention PFC, without a PFC (or other ecu) and an air pump, the engine will idle leaner than it needs. The O2 feed back system needs the air pump to dilute the exhaust so the perceived AFRs are leaner. Since the AFRs are now richer, it trys to pull fuel to get stoich.
The PFC allows you to turn off the O2 FB system.
I hope the dual fuel pumps are not over powering the FPR.
90 psi compression at 18,000 miles is very poor!
The PFC allows you to turn off the O2 FB system.
I hope the dual fuel pumps are not over powering the FPR.
90 psi compression at 18,000 miles is very poor!
#7
well the 90psi is not with the engine warmed up obviously since it wont run , so im hoping it will get a little better. im wondering the same thing with the fuel pressure regulator. when i looked at the car before i purchased it, he could get it to start but it sounded(and felt) as if it were running on 1 rotor. with these solenoids is it fine to just remove them and leave the connectors open??
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#10
ok so i got it started tonight and it is running on both rotors just sounds like a huge port lol i know its not and something is wrong. anytime i give it a decent amount of gas it just pops alot.
it is throwing code 23-fuel thermosensor?? Could this be the issue?? can someone please help me as finding this sensor and if anyone has ever heard of this problem
it is throwing code 23-fuel thermosensor?? Could this be the issue?? can someone please help me as finding this sensor and if anyone has ever heard of this problem
#11
Mr. Links
iTrader: (1)
The fuel thermosensor is the sensor which is in the fuel rail. It's basically the same sensor as the coolant thermosensor, just different location. It will cause the car to run in limp mode with that code being thrown.
Check the photo below of the secondary fuel rail. The fuel thermosensor is the green one in the middle:
Check the photo below of the secondary fuel rail. The fuel thermosensor is the green one in the middle:
#15
Urban Combat Vet
iTrader: (16)
Change out the fuel temp sensor. Those two sensor may be interchangable, but you'd have to check the part number to be sure.
And unless you left some things out, nothing in your mod list justifies dual fuel pumps and the "re-wire". So personally, I'd consider returning that a little closer to stock.
And unless you left some things out, nothing in your mod list justifies dual fuel pumps and the "re-wire". So personally, I'd consider returning that a little closer to stock.
#19
Eh
iTrader: (56)
OMP deleted on Stock ECU will cause limp mode instantly. Shouldnt cause it to lope at idle but will backfire and pop as soon it nears possitive intake pressure(boost). You can plut an OMP in, just the electrical connection and tuck it out of the way next to the PS pump and not actually hook up all the lines to fool the ecu. Your best bet at this point is to buy a PFC and go from there.
Check map sensor, TPS and make sure none of the injectors are leaking. Also if the car sat for awhile it wouldnt hurt to empty the fuel tank and put in fresh gas.
Check map sensor, TPS and make sure none of the injectors are leaking. Also if the car sat for awhile it wouldnt hurt to empty the fuel tank and put in fresh gas.
#21
ok so tested the fuel thermosensor at 3.52 of resistance and that was without starting( as i couldnt get the car started tonight!) im getting a good thermosensor tomorrow and spark plugs,hell possible wires. also going to replace the harness that goes to the coils as its pretty hacked. i do have a couple of connectors i have questions about. ill post pics