Alfa 146 boxer problem - Alfa Romeo Forum
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Alfa 146 boxer problem


I have run into a world of pain while trying to revive a 146 boxer 1.6.

To cut the looooong story short we got the engine clunking badly and running roughly about 2 days ago and set to get it going.

First we discovered that the right side camshaft had worn it's lobes and destroyed the buckets (hydraulic type).

Then we set to change the belts and tensioners, overhaul the brakes, clean the water radiator..... etc. as the car was standing still for a long time.

As we tried to start it up it barked into life but it runs as it would run on 3 cylinders. We tried unplugging each cylinders HT lead and we see no difference if we disconnect the rear right spark plug. So we suspect the problem lies there.

We have a good spark on all 4 spark plugs
The compression test showed that the compression is around 12 on all 4 cylinders
All the injectors work ok.
All 4 exhaust pipes get hot equally fast.

After a lot of head scratching we suspected that the head gasket must be faulty so we pulled out the right head and found nothing wrong with it. But when changing the gasket we discovered that the engine has been swapped for a 1.4 engine! So looks like we have a complete 1.6 ECU, intake, exhaust and all the sensors on a 1.4 engine. All I know is that the 1.4 and 1.6 are running different type of electronic. So i am not sure if we are getting a spark at the right time as the flywheels are different...

Any ideas what is causing this problem?
belidirkac is offline  
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What flywheel the car is fitted with?

1.6 ecu can only read 1.6 flywheel.
nahar is offline  

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