Drove while 2 quarts low on oil

SirRobyn0

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Update: Added 2 quarts, oil level is happy and the pressure gauge is back to pegged, but she's now got a dead miss on at least 2 holes. Gonna borrow a compression tester and figure out which ones. Gonna also check under the valve covers while cranking for possible wiped cam lobes.
I'm sorry to hear that, but as you already know cam issue would be most likely I think anyway.
 

IcePatch

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quick update: took my laser thermometer out and fired her up. Pointed it at the headers as she was idling, #8 was the only one that wasn't heating up. Pulled the plug out and took the below picture. Gonna pull the rest of the plugs and check for additional fouling. I'll put new plugs in and see if she runs better.

This is likely what I heard getting worse on the freeway. As the plug fouled further the miss became more consistent.
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IcePatch

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Final update:

New plugs installed, she's running just like new again.

Bought a vacuum guage and fiddled with the idle mixture, also need to get my hands on a different vacuum pot since she's only pulling about 13-15 at idle. (Lumpy cam).

Thanks for all the responses and the reassurances. I'm quite thankful that I didn't actually grenade the motor.
 

SirRobyn0

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Yes that's good news, but that's also some pretty serious fouling. I just went though an oil control issue on my rig, it can get pretty frustrating tracking that source down, but eventually got it fixed. Let us know how it goes!
 

cstew47

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I agree with all the other guys that say it's probably fine. I use to have a customer with a Suburban 350 in it and she'd run it out of oil regularly. It's amazing what an otherwise healthy engine will take. No matter how many times I told her she could swing by the shop every few weeks, and that I'd not only check it, but top it off for free she'd never do it. When the oil got low enough for the light to flicker on and the lifters to clatter she'd come by, I'd fill it and idle it till it quieted down. This went on for a few years before she sold the truck.

My 1996 Grand Cherokee. When I bought it, it was a private party sale and the price was right to move quickly. When I went to look at it I pulled the stick and there was no oil on it. On a short test drive the pressure gauge would drop every time I hit the brakes. So what did I do I went and bought 5 quarts or oil, put 3 in the crankcase to bring it up to full, the oil pressure was good, the engine was quiet. So I made an offer, bought the Jeep, and have put about 75K on it since then. Still going strong, and valve gaskets fixed the oil usage.
Do you mean valve cover gaskets or valve guide seals?
 

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