Hi
As some of you know, some time ago I repaired the engine of my 33 1.7 16V.
I had some problems about starting the engine the first time, but since it started the first time, I didn´t have a problem starting it.
Since it started, I took the car to the portuguese inspection and it passed without a problem.
I have drove the car and noticed it is not working the way it should.
The main problem is that it "pinks" a lot.
If I start the car and drive, it works fine until it reachs 40 degres.
If I put the accelerator down it goes fine, like a 16V should go.
But after 40-50º of engine temp it starts pinking a lot more them it should, and the more the engine temp goes high the more it pinks.
At 80º of temp it pinks a lot, if I drive normal on a strait or down it is almost fine, but if I drive up the hill it pinks a lot.
Also if I drive on a strait and try to put the hammer down in 3º gear at 3000rpm it pinks a lot.
I also noticed that when the engine is hot (80º) the engine seams rough.
It looks that the ignition is advanced... but as it is controled by the ECU, what can be causing this?
I idles fine, when stoped it revs nicelly in cold and hot.
It has a brand new radiator and temp sensor (the blue).
Changed the spark plugs, the distribuctor cap and rotor, HT leads by others I had for spares.
I checked for air leaks and didn´t find anythig.
I notice another strange thing.
When the engine is hot, the idle speed is difficult to go down of 1100-1000rpm. If I move a little the throtle switch the RMP goes down to 900 like it should, but about half a minute later the RPM goes up again... so it is the ECU that raises it!
But then again... what is telling the ECU to raise the idle speed?
It is not "type of fuel" related, I tested with 95 and 98 Ron.
Thanks
As some of you know, some time ago I repaired the engine of my 33 1.7 16V.
I had some problems about starting the engine the first time, but since it started the first time, I didn´t have a problem starting it.
Since it started, I took the car to the portuguese inspection and it passed without a problem.
I have drove the car and noticed it is not working the way it should.
The main problem is that it "pinks" a lot.
If I start the car and drive, it works fine until it reachs 40 degres.
If I put the accelerator down it goes fine, like a 16V should go.
But after 40-50º of engine temp it starts pinking a lot more them it should, and the more the engine temp goes high the more it pinks.
At 80º of temp it pinks a lot, if I drive normal on a strait or down it is almost fine, but if I drive up the hill it pinks a lot.
Also if I drive on a strait and try to put the hammer down in 3º gear at 3000rpm it pinks a lot.
I also noticed that when the engine is hot (80º) the engine seams rough.
It looks that the ignition is advanced... but as it is controled by the ECU, what can be causing this?
I idles fine, when stoped it revs nicelly in cold and hot.
It has a brand new radiator and temp sensor (the blue).
Changed the spark plugs, the distribuctor cap and rotor, HT leads by others I had for spares.
I checked for air leaks and didn´t find anythig.
I notice another strange thing.
When the engine is hot, the idle speed is difficult to go down of 1100-1000rpm. If I move a little the throtle switch the RMP goes down to 900 like it should, but about half a minute later the RPM goes up again... so it is the ECU that raises it!
But then again... what is telling the ECU to raise the idle speed?
It is not "type of fuel" related, I tested with 95 and 98 Ron.
Thanks