1979 camaro engine smoking

grcauto

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Is it a .mov file? That should work. Or just upload to youtube and link it here.
 

briangearhead

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Was talking to a buddy of mine at work today and he brought up a fact that I hadn't thought about .. he said it could be possible that the AFR is off and is still causing it to Over fuel .. just something else I wanted to share ..
 

billr

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If it was running way rich, I would expect to see some black smoke.
 

grcauto

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You can tell by the smell if it's gas or oil. That thing sounds rich at idle unless it has a cam.
 

billr

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OP said it is a "voodoo" cam, probably non-stock...
 

briangearhead

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Pulled the plugs , scoped the cylinders... couldn't really see any evidence of scratches in the cylinders .cylinder walls were nice and clean .. tops of the pistons where pretty black alittle oily ... the plugs of course smells like they had been dipped in gas .. uploaded a video of the plugs ...
 

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billr

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Compression readings???

This recent video would not load for me...
 

grcauto

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Pulled the plugs , scoped the cylinders... couldn't really see any evidence of scratches in the cylinders .cylinder walls were nice and clean .. tops of the pistons where pretty black alittle oily ... the plugs of course smells like they had been dipped in gas .. uploaded a video of the plugs ...
Is that oil or fuel? Do you see a good cross hatch on the cylinder walls? Find out which it is. If it's fuel they need to program your efi unit. Do you have any way to look at data from the efi unit?
 

billr

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I kind of assume you have a WB O2 sensor, and some way to read AFR/lambda; correct?

Screen-shots from the Holley tuning SW may help. I used MegaSquirt and an old Electromotive system for many years. I may be able to spot something obvious from the screen-shots. This is a TBI system? Two injectors or four?
 

briangearhead

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Sorry no compression readings .. mine is broke unfortunately have to get a new one ... the system I'm using is the holley sniper EFI 4 injectors .. and yes it does have a hand held that plugs in to the throttle body and gives you all the read outs .. as for the cylinders , my scope isn't anything expensive.. doesn't have a "perfect " image.. but from what I could see all looked good ... and for the spark plugs .. if you were able to open the video.. the plugs looked wet .... and this car has been sitting a week since last started ... and had a strong gas smell
 

grcauto

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You should be able to see the cross hatch pattern on the walls even with low light. If the walls are smooth she got wiped.
 

briangearhead

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Well after i read what you wrote about the cross hatch it reminded me of what I told the holley tech support guy .. I was worried that the over fueling would wash out the cylinders... .. after I got home I stuck the scope back in and I believe your correct .. the cylinders look smooth as a babies butt ... "possible " the over fueling fried the rings ?
 
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