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Cavy

Squeal on start up and smoke top engine 02 996

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Only occurs on cold start... squeal and smoke go away quickly.  Had a P0430 code as well. Cleared and hasn’t returned.Can anyone help diagnose. 

Also get very slight surging at constant speed. Engine was recently reconditioned. Heading to shop in a week  it’s the soonest they can get me in  unfortunately it’s a 200 mile drive  

 

Edited by Cavy
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1 hour ago, Cavy said:

Only occurs on cold start... squeal and smoke go away quickly.  Had a P0430 code as well. Cleared and hasn’t returned.Can anyone help diagnose. 

Also get very slight surging at constant speed. Engine was recently reconditioned. Heading to shop in a week  it’s the soonest they can get me in  unfortunately it’s a 200 mile drive  

 

 

I would wager you have an AOS on the way out; have them hook up a digital manometer to the oil fill cap, you should not have more than 5 inches of water vacuum fully warmed up.  If it is higher, or surges, you are in the market for an AOS.

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Thank you.... I’ll have them check that. I also ordered a used sai just to check to see if that’s causing the high pitched squeal at start up. I can return if that doesn’t fix it. 

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The squeal is your SAI pump. It needs lubrication. You can hear it winding down at 1:41 on the 1st video. The smoking at 0:28 is not normal. Could be oil dripping on the right header.

 

The tail pipe smoking on the 2nd video is oil burning in bank 2 cylinders. Check if the oil level is good and also the AOS vacuum level as John mentioned above. Has anyone touched the bank 2 pistons/cylinders such as a rebuild?

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Oil level is good. Still at full for 500 miles 

ordered used sai 

Yes the engine has been overhauled And I’ll be taking car to them to look over. Have a 3 year 100k warranty 

 

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You may want to check if the catalytic elements are loose inside the converters.

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Will do

the cat is 2 years old. Less than 6 k on it. But I’ll have them check that too. Thanks 

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What's your oil level - both on the electronic gauge and the dipstick? 

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Full on stick.. right below the upper dot on stick

full on electronic 

fired up yesterday and no smoke 🤷‍♂️ Sounds much quieter 

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Be careful not to overfill the oil. These engines are super sensitive to over-filling. "Full" on both the electronic gauge and the dipstick is verging on "over-full" - the middle of the gauge and/or dipstick is a much better place. 

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you know.... I think you’re right. I noticed when I bought it the oil on dipstick was on the high side of stick. I asked if the car had been overfilled.. he said no.  I’m thinking it was. Now its just above the min mark on the stick. Hopefully it just all burned off and didn’t go anywhere it shouldn’t be. 

Lot less smoke on start up now. Engine runs quieter. 

Now if I could just figure out this mild annoying surging at constant speeds. Fn annoying. 

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Surging - do an e-gas calibration.  Turn ignition on (not start), keep foot off pedals, wait a full 60 seconds, turn key off and remove the key.   Then start as normal.

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thank you... I tried it. Seems to be better but still there. Wonder if I should disconnect battery and start fresh 

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Disconnecting the battery will reset the ECU/ DME to base values.  I would recommend after disconnecting, perform the e-gas calibration once again and then go for a drive so the ECU/ DMEcan begin the process of resetting the driving values.

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Bring this thread back again. Still getting that ticking sound from passenger side. It seems to quiet down after a drive and up to temp. Is this normal or should I have this looked at. Oil just changed and is between 2 dots on stick and 1 bar below full on electronic gauge. 
The engine was remanufactured 5 k miles ago. The warranty on the engine was transferred to me at time of purchase. So if this is ticking is abnormal and  internal it should be covered 

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