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Here is a link to Eric’s idle speech -_x000D_
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http://www.ericthecarguy.com/forum/topi … 134_x000D_
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Keep us posted!If I can get this sorted id be happy to spend some time on how to take the IACV apart but really need to get this sorted first._x000D_
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Think the knock sensor code is a decoy as even disconnecting it changes nothing so went to check some simple basics._x000D_
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PlugWell, for one make sure the spark plugs are all NGK or Denso. What did you pull out?_x000D_
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Did you do a dry compression test followed by a wet compression test (by then adding a small amount of oil into the cylinder)?_x000D_
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Compression doesn’t seem wrong to me,Thanks for the detailed reply 🙂 _x000D_
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Think they were Denso’s but will double check that tomorrow – whatever they were they looked like new along with the condition of the oil when I removed the rocker cover._x000D_
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I did just a normal dry compression test as II see where you are coming from in relation to the IAC – I might try another one if I can find one but cant quite get my head around how the IAC will cause a lumpy missifre symptom compared to a high, low or fluctuating idle._x000D_
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Going to try and get an emSet the valve clearances today and although they were out of spec the issue is still the same. Got some new plugs to try tomorrow 🙂
Based on your description you might still have a problem with the IAC, yes it may be clean but it may not be working as it should.
i cleaned the throttle body on my car and it set off a cel. i never did find out the code but the idle smoothed out after some driving.
Got the emissions checked today and after 1000rpm its fine but at idle its overfueling._x000D_
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With that in mind I though I go back to basics so plugs swapped and lambda sensors checked too and all ok._x000D_
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Then thought id check for vacuum leaks and it seems thDry results on a heated engine but had no oil to do a wet so spent some time making a leak down tester instead !_x000D_
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The inlet gaskets are 100% going to get changed but id like to know where my extra compression is going first as if the head has to come ofI wouldn’t worry about the compression as I feel that would have little to do with your idle problem, the intake gasket leak however will effect the idle and performance.
I see your point but im a tad OCD and need to know whats happened so pulled the head today._x000D_
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Yet to asses the head but the 8 valve shaped marks on the inlet sides of the pistones might give away what im expecting to find 🙁
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