97 Impreza won't start
 

Hi all, can't get my 97 Impreza to start. Had to put another engine in, which was a runner in my other scoob. Changed inlet manifold, maff, crank, cam, knock sensors, plugs,leads, coil pack. Getting fuel in cylinders, good spark. Engine turns over well, but refuses to start. Help please as I'm pulling my hair out

Have you checked fuel pressure

I've changed fuel pump as well. Fuel flow is really good

Plug leads on correct way round/order ?
Coil pack fitted correct way round and hence correct firing order ?
New inlet manifold gaskets and well sealed (can be tricky to seal sometimes).

yes to all

do you have a imob fitted ?

Cambelt slipped

no

no checked it before fitting engine

Are the conections to the sensors fitted properly, particularly the crank sensor?

try swearing at it

What year car did the engine come from ??

Done that and more

1997

Fuel flow may be good, but is pressure ?
If the fuel pressure regulator is knackered it wouldn't be holding pressure and the majority of your good fuel flow will just go back to the tank via the return pipe. You would still end up with wet plugs but the fuel won't be atomising out of the injector to give you the right mixture/burn.

Leaking injector seal/rail, fowling the plugs ?.

well I'm. Close to calling it a day on this scoob. So may break or sell on. 4 days now and still not going.

That would be shame how do you no your getting fuel to cylinders have seen if plugs wet after cranking ??if so will be ignition prob.check will plug while out of cylinder eg laying on manifold so earthed out does it spark when cranked??if not poss ignition problem.if spark plug is dry when removed plus after cranking(be quick)then fuel prob. have you checked coolant temp sensor as maybe faulty ??!!

I've had plugs out and got a good spark. Taken out one of the injectors, plenty of fuel in rails.

Have you noid lighted the injectors to see if there pulsing??