Ive got a 5.7 liter chevy engine. If it sits for a few days and then is started there is a little smoke only for a few seconds. I think its the valve guide seals. If there any way to fix them without replacing them? I know there are some oils and additives that claim to help this problem. Anyone tried any of these and how did it work for you? Like i said, the motor runs great it just smokes a little when its started after sitting for a day or so. Thanks for any info

 

Sealers and what not for the engine oil is like putting on a bandaid when you need surgery. Sure, it'll help, but eventually you'll need surgery.

Compression on the engine good?

 

Compression tests showed 140 across the board. I just had one of the HG's replaced due to low compression in one cyl. its not much at all but it annoys me. It runs strong...(180,000) and starts right up everytime

 

 

Pretty much considered normal. Stupid ass Chevy?s use the ancient old o-ring style valve seals and the oil passes by them easily. I believe you can convert the o-ring style deals to the umbrella style though.

 

I'm suprised the heads where not sent out to a machine shop for a full go thru during the head gasket job.

 

Did it run hot?Extreme heat will cook the umbrelle's or the O-rings.

 

I found that the Restore treatment works fairly well.


My 22RE started smoking under compression braking (due to engine sitting nearly a year w/o starting while I had the tranny and t-cases out). I think the valve stem seals dried out while the engine sat (had synthetic oil in it at the time). Anyway, I dumped in a can of the additive and it was like someone turned off the oil burning, at least for normal driving. Before treatment, I could smell the burning oil when coasting to a stop in gear. Afterwards, not a whiff of oil smell unless I do long downhills w/ engine RPMs over 3000 and vacuum over 25" Hg. I will ultimately redo the head, probably swap to a new head from EngnBldr, but for now the additive works acceptably well for me.