LostRotary

Hi Everyone,

I purchased a Rebuilt engine from another country ( South Africa ), and Im in Mozambique.

The first engine was used and had no good compression, only started with oil in plug holes.

No this one (rebuilt) , compression puffs seem loud and ok, dont have a compression tester, nor one in 3000km, but it cranks, i get spark and fuel, it sounds as it nearly want to start but it doesnt (Until it floods).
Its a Mazda Rx8, 4 port auto, 2004 Model, with 65000km on it. Japanese imported in 2016.

I really need help as I dont have any rotary mechanic in my area and Im desperate to get the car running.

Please Help!!!

9krpmrx8

iTrader: (46)

I mean it could be many things, anything from a poor rebuild to an install error. Either way it is pretty much impossible for anyone to diagnose over the internet.

Too bad it is an auto.

Loki

iTrader: (1)

Are the injectors wired correctly? That's probably harder to screw up on a 4 port but still.

LostRotary

Hi Yes, the injector are correctly wired.

Dave04

Have you tried a fresh set or a known good used set of spark plugs? Maybe yours are fouled

LostRotary

I got two sets and tried both.

Both which started the previous 2 engines.

Loki

iTrader: (1)

Have you reset the ESS profile? Key in "on", door open, press the brake pedal 20 times in 8 seconds. Car will confirm with one sweep of the oil pressure gauge. Try it again after that.

LostRotary

Done that

Kamal El

Is there a list of common engine installation errors?

furansu

Check compression:
-Unable to presently as no tester is available in your area. You really need to order one, even if it is just a normal piston comp. tester, you can get a rough idea from it.

Spark:
-Are the coils going to the correct plugs and validated that all wiring is fully-seated, and in the correct coil?
-Are plugs getting spark? Remove from motor, provide a ground to the plugs, and crank the engine to see if they are sparking.
-Are they OEM plugs, do you have a picture of them that might indicate events in the combustion chamber?

Coil-to-Plug connections. From front to back.
Coil 1: Front rotor, Leading plug
Coil 2: Front rotor, Trailing plug
Coil 3: Rear rotor, Leading plug
Coil 4: Rear rotor, Trailing plug

Fuel:
-Do you hear the fuel pump priming on key-on?
-Do you have fuel pressure at the fuel rail? There should be a Schrader valve on or near the fuel fail that you can check this from, but I can speak to the location.
-Check that the injectors are firing. Are the spark plugs wet with fuel at all, or bone dry? Maybe pull a primary injector and crank engine to see if they are firing.
-Re-validate that the injectors (and their wiring) are in the correct positions, not just that they are connected.

Air/induction:
-Check airbox, intake tube, intake manifold, etc for leaks, blockages (debris), or disconnect/cracked/mis-routed lines.
-MAF connected and clean?

Starter & battery:
Is your starter and battery healthy? Have they been tested as good? Is the battery the correct size (high enough CCA rating)?

Sensors:
-Make sure the Eccentric Shaft Sensor is connected and undamaged. You won't get fuel or spark if this is inoperable

LostRotary

I WAS REMOVING THE LOWER INTAKE TO TEST THE INJECTORS AND I notice fuel coming out from the pipe on the lower intake that goes to the Throttle Body. IS that normal?

Brettus

iTrader: (2)

No ....did you swap the lines over ?

Loki

iTrader: (1)

The jet lines? Are you sure it's fuel, not oil or oil+water+fuel condensate?

Blow-by can cause oil to collect in the intake from whence it can in theory end ip in the jet air lines. I don't really see how fuel would ever back up in the same way.

How confident are you that this engine was rebuilt by someone who knows what they're doing?

Brettus

iTrader: (2)

[QUOTE=Loki;4856244]The jet lines? /QUOTE]

I think he means upper intake manifold and the evap line.......... but without pics ..... who knows what he is talking about .

LostRotary

That Is the pipe that is pouring out gasoline