Possible Injector problem? - Alfa Romeo Forum
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Possible Injector problem?

Hi guys, been reading loads of these threads for about a month now and need some assistance.

My 147 1.9 Jtd-M has developed a very rough idle at start up, and even once warm (I think). I have given it a couple of tanks of Shell V Power and a couple of bottles of wynns injector cleaner over the last month, as well as cleaning out the EGR valve again.
There may also be an increase in smoke...

I have taken some injector readings on fiatECU scan, this is cold start and then run for about 5 minutes, no increased revs, all at idle. (this is what I found) http://oi48.tinypic.com/35jczt2.jpg

I do not know what the values are supposed to be, or how the lines should replicate each other?
If anyone has any ideas of what it might be, or can give me any information about the readings I have taken that would be great.

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I have a very similar problem to you, rough idle and dodgy injector correction values. Apparently the values should be close to 0 (don't quote me on that). I've also tried forte injector cleaner.

I'm guessing they either need recoding or refurbishing/replacing.
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I think, Injector correction values depend upon downstream sensor responses as well... So it may/may not be injectors
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The values should be minimal. Certainly not into the 1.0 and 2.0, as davrosalfa said as close to zero as possible. The thing is other malfunctions can lead to the injectors behaving the way they are. I have even seen one once where it was running rough and it turned out to be one broken rocker! But that is an extremely rare case and I am not saying that is what is at fault.

Recoding may help although that is usually only helps cold / start up running. Feel free to give me a call on Monday, a refurb on the injectors is not too costly and can be turned around relatively quickly if it is the injectors that are at fault.

Cheers, Loz
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