(12-09-2018, 08:43 AM)Oscar Wrote: The shop is taking awhile to get the results on the head, so I ordered a refurbished one with new valves and springs from TrailTough. I will post old head results when available. I installed the new head with my cam and new Felpro gasket. I did a compression check to see if the issue with #4 cylinder was resolved.
Results: #1 @200, #2 @190, #3 @195, #4 @205....definitely better than before!
Thought I had it solved, but car still requires throttle input to start when cold and has same misfire.
the Iac in the bottom of the TB (bolted to the bottom of all 16v throttle bodies (TB) must be open it it will not be easy to start any 16v.
That IAC is most of the cold starting air supply, so adding right foot , adds the missing air.
I took it to smog referee appointment anyway and failed for way high nox...see 5 gas report attached. I suspected the egr from reading all of your tech pages, so I did all the tests again.
It’s a quad port. Passed stall, passed bark(although I don’t know how loud it should bark...chihuahua or Great Dane. (now that if funny) thanks!!!!
Live test showed movement over 2500, but would close occasionally with throttle input all the way to 3500. (WOT closed the valve on purpose)
I watched the diaphragm and it’s movement correlated directly with the misfire...misfires when diaphragm opens. EGRT and VSV tested good.
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