Hey guys, new to posting here and searched for threads but can't find my exact same problem.

I have a 2004 impreza 2.5 ts that I swapped a motor from a 2000 impreza L. Mounted the exhaust manifold from the 2.2L and the intake manifold from the 2.5L. Only part not installed yet is the air box, so it's open from the throttle body. 

Got all the wiring hooked up, engine cranks and there is a noticeable smell of fuel, but it won't run. Haven't tried much as I went home for the day right after this. I'm just curious if anyone has done this and experienced similar issues or knows a possible solution.

 

Thanks :)

Likely need to swap the crank and LH cam sprocket from the old engine. The tone wheels for the crank and cam sensors are part of those sprockets, and there are a couple different patterns.

Just look at the teeth on the crank sprocket if they are different, both need to be changed.

On 3/28/2024 at 10:38 AM, Numbchux said:

Likely need to swap the crank and LH cam sprocket from the old engine. The tone wheels for the crank and cam sensors are part of those sprockets, and there are a couple different patterns.

I'm going to be taking a further look at it next week. I got the car to fire up for maybe a second before dying, and other attempts it would backfire while sputtering. I am waiting on new intake gaskets for it which is going to be my first approach. With the swap I had to use the plastic ej251 manifold, but there was no availability on the ring gaskets that are seated into it. As an interim to at least get the motor together, I opted to try the flat metal gaskets meant for the ej222's metal manifold. If this doesn't work I will open up the timing cover to check the sprockets. Any specific giveaways to tell what I'm looking for? I'm reasonably mechanically inclined but far from an expert.

 

Thanks for the reply

Easier than you may think. Grab a 22mm socket and ratchet and after removing the covers look for the alignment of the indentations on the sprockets. At one point all should point vertically to their mark on the inner covers and the main in the center you look above and you’ll see the mark I’m sure. 
 

Basic cam timing is always marked from the manufacturer. And the rest of the timing is out of our hands these days. 
 

Spray the backside of any bolt your going to remove on the covers. Let the nuts soak if you can. The covers tend to  rack when the bolts won’t release. So don’t stress those. Just spray and maybe turn inwards a touch then back n forth. 

Sorry, turn the 22mm on the crank clockwise as you look at if from the front. 

Moosens described checking if the cam timing is correct

My bet is that the crank and LH cam sprockets are incorrect. Pull the covers and check the crank sprockets (can be done without removing the timing belt) between the 2 engines.

 

 

 

But yea, swap the manifold gaskets for the correct ones.

Pull trouble codes before taking stuff apart.

Edited March 29, 20242 yr by Numbchux

On 3/27/2024 at 7:53 PM, GRNGBLN said:

Hey guys, new to posting here and searched for threads but can't find my exact same problem.

I have a 2004 impreza 2.5 ts that I swapped a motor from a 2000 impreza L. Mounted the exhaust manifold from the 2.2L and the intake manifold from the 2.5L. Only part not installed yet is the air box, so it's open from the throttle body. 

Got all the wiring hooked up, engine cranks and there is a noticeable smell of fuel, but it won't run. Haven't tried much as I went home for the day right after this. I'm just curious if anyone has done this and experienced similar issues or knows a possible solution.

 

Thanks

If it’s not an installation error, it’s the sprockets. Check the timing marks? Fuel lines didn’t get mixed up?  
 

Swap the crank and drivers side timing sprockets. 

Edited March 30, 20242 yr by idosubaru

I have now replaced the crank and cam sprockets and the motor started right up. The only problem is it idles at 4000rpm and I have code p0519. Anyone able to provide insight on where to start with this?

 

Thanks