Technical Rough idle after overhaul on Abarth

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Technical Rough idle after overhaul on Abarth

oowop

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I did an overhaul on Abarth and troubles don't come to an end.

I now have problems with rough idle. Which i understand can be just about everthing. Do you guys have any suggestions what to look on parameters for potential cause?

I also changed clutch (renew it actually) and it's also rough on clutch release. Rod is 12.125mm which should be 15.700mm I believe. I tried to do throttle learn, Clutch degradation index by FES instructions and it nothing happened. Clutch degrad. index is still 10683 for me same as before clutch rebuild.

I read in elearn that if you repalce ecu or throttle body you should do learn process on the first start of the car with new components. After that you can disconnect battery without losing data. So by my flawless logic you actualy can't reset or partialy reset ecu or throttle body with disconecting battery since everybody suggests that with different figures from 30 min to over-night.

Overhaul by amateur.
 
you can reset parameters but not the set units... after a re-build it will re-learn the new chips, ecus ect and will store them in the list of things to connect to on start up... but it does not store the parameters that it has adjusted to work under. that can take up to 300 mile to configure
 
So I can assume that idle will sort itself out in 300 miles or so. When I rev it it doesn't have that roughnes. It runs as it should but when I let go it hardly sets to idle rpm at 645.
 
I'm thinking now, since I put timing belt on more or less by feeling. Maybe I advanced it or retarded ignition couple of degrees. That would explain rough idle like on dragsters and it goes like stink on acceleration.

I think I messed up inlet cams but exhaust cams are ok. Since there were a mark on exhaus cam pulley and belt itself which aligned perfectly with crank pulley at TDC. But on intake pulley there isn't any marks so I did it by feeling.

Maybe I should order those cam locks from ebay.
 
Yeah I guess you could have a bit of extra overlap (exhuast valves still closing when inlet valves opening), you have advanced the the inlet timing a little bit making it run rough on idle but at higher revs it runs better? I don't know the effects of increasing the valve overlap/ advancing inlet valve timing but just assuming this could happen IF this was the case.

If you used a dial test guage to find tdc for inlet when exhaust is at bdc then I'd reckon you should be ok timing wise.
 
I just ordered cam lock from ebay for 40 pounds and will redo the timing the right way. Since elearn also says to check that as last resort and that is the only thing which comes to mind that I could screw up. Will update after timing fix.

Any fan ecu's laying around? I could use one.
 
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