Ok, $1000 is still on the table for anyone who can fix my misfire
02-21-2006, 12:08 PM
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Ok, $1000 is still on the table for anyone who can fix my misfire
at idle issue.
It misfires mostly on cyl 4. Sometimes on 5 and 6 but never 1-3. Problem was noticed at the time I bought car new and progressed over the years. It is just gradualy got worse on stage 1, 2+, 3. Two dealers, 5 visits, they are clueless.
Following been done:
- new spark plugs, coil, ign amp, Seafoam cleaning, engine coolant sensor, O2, new TBelt. Compression and leakdown test on cyl 4. Injectors now RS4 at 4 bar and RS4 fuel pump. With AC and all lights on misfires go down but not entirely, my be 10-15%.
Any takers, ideas?<ul><li><a href="https://forums.audiworld.com/s4/msgs/2122317.phtml">https://forums.audiworld.com/s4/msgs/2122317.phtml</a</li></ul>
It misfires mostly on cyl 4. Sometimes on 5 and 6 but never 1-3. Problem was noticed at the time I bought car new and progressed over the years. It is just gradualy got worse on stage 1, 2+, 3. Two dealers, 5 visits, they are clueless.
Following been done:
- new spark plugs, coil, ign amp, Seafoam cleaning, engine coolant sensor, O2, new TBelt. Compression and leakdown test on cyl 4. Injectors now RS4 at 4 bar and RS4 fuel pump. With AC and all lights on misfires go down but not entirely, my be 10-15%.
Any takers, ideas?<ul><li><a href="https://forums.audiworld.com/s4/msgs/2122317.phtml">https://forums.audiworld.com/s4/msgs/2122317.phtml</a</li></ul>
02-21-2006, 12:22 PM
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Sorry if repost, I didn't go though the whole linked post, but here are a couple of suggestions.
You could play with the clocking of the #4 injector. See if twisting it one way or another to redirect the spray pattern will help.
Also since you said something about higher idle loads helping the miss, why not try using the "Idle torque.." channel in lemmi. My guess is that tweaking one way reduces timing and vacuum, and increases airflow, tweaking the other does the opposite. Just a guess...
Also since you said something about higher idle loads helping the miss, why not try using the "Idle torque.." channel in lemmi. My guess is that tweaking one way reduces timing and vacuum, and increases airflow, tweaking the other does the opposite. Just a guess...
