freshly rebuilt jdm s4 engine with a few goodies on it. (BNR stage 2 turbo, RB rev2 exhaust, new TIP, and other small stuff) a harness i got of the forum and a the same for the ecu. the jdm harness was not usable and the guy gave me a FD ecu.

anyway to the symptoms, engine cranks but dosnt start, we deflood add oil to each rotor through the leading spark plug hole, button her up, crank, the engine attempts to start but dosnt, sometimes we can get it going for about 3-5 seconds then dies. playing with the throttle does nothing wile trying to start it. (it sucks doing this procedure a billion and a half times)

-we have checked the timing for the rotors about 10x.
-set the tps to the 1.0ohms for idle
-tired rotating the CAS while cranking to find the right degree of advance/retard (this seems to help on some starts make the engine last longer, after we find a good spot.)
-checked ground points a billion times.

now what has me concerned is that when i pull the plugs i can smell gas on the rear but not on the front plugs. poor/ no signal to the front injectors?how do i check? the fuel injectors are the stock ones but were sent out cleaned and rebuilt. so there good.

also are the coilspacks the same for the NA and Turbo engines?

cant think of anything else.

 

Is this JDM engine new to the car or was it in the car before and rebuilt? Reason I ask is the fuel lines going to and from the engine on a U.S. version are the opposite of how they are connected to a JDM version.

 

no what was in the Tii car was a na engine PO blew engine and turbo and put in a crate na engine. but left all the Tii parts in

what i was doing was returning it to it former glory + more power. no i just put the fuel lines were they were for the na engine on the turbo engine. assuming that they go in the same place. so do i jut need to swap/flip the lines?

 

If you placed the fuel lines to and from the engine exactly as the previous engine had then you now have them backwards which is causing your problem.

 

ok thanks will try that now.

 

i had my suspicions about the your advice on the fuel lines and you were wrong. i gave it try anyway because i was willing to do anything to get this thing to start.

i was getting 0 fuel when i swapped them so i put it back to normal.


how can i check to see if the front injectors are getting the signal to fire. because it looks like there is no fuel going to the front rotor.

 

Actually I am right as it is a know fact on this board that JDM engines have their fuel lines hooked up the opposite to their American counterparts. You can do a search and you'll see time after time that the information I provided was indeed correct. Enjoy fixing your car.

 

ok if you were right then why was there no fuel in the engine and the return line was dry?

 

perhaps it has a USDM rats nest hard lines? who the **** knows since you weren't very clear in your explanation. i thought the same thing as satch did. try turning it down a notch.

 

well maybe by dumb luck the lines are setup right. and swapping them made it not run. because they way it is now i can at least get it to get going a little bit the other way around absolutely nothing and there is no fuel in the engine cant smell it or see anything after deflood. but the way it is now i can smell fuel and see it come out after deflood.

i didn't mean to argue his point, i tried it, it didnt work so i thought to myself maybe he was wrong. and where am i not clear so that i can explain to you what i have or whats going on? i said it was a jdm engine, everything on it is jdm.

 

if it's a Jspec block with everything on it from a Jspec engine then the lines should be reversed from the USDM setup. the line off the fuel filter goes to the rear hard line on a Jspec, front for USDM engines.