Blown head gasket. will rebuilt .uch pressure on pistons and rings, causing failure

How many miles on the engine ? Worn piston rings ! worn timing chain , jumped time ! engine worn out !

If you are asking the question let a mechanic do it. The gasket is cheap but it involves a lot of work and some experiance. Look in a Chilton book for that model and you'll get an idea of whats necessary.

Blockage in the Oil Passages? Put the Head Gasket on WRONG, Wrong Gasket used

Would be in the head.Either cracked or gasket blown.Take it back and have them fix it right or get your money back....

Blue smoke is oil burning, white steam/smoke is coolant burning, it will be a sweet smell.
You have a choice, repair the head gasket (if there is coolant in the oil, the bottom end needs rebuilt also) which is around,$300-$1000 depends if a garage or you do it, the problem with doing a head gasket is there is no garantee, if you replace the engine with a used engine you have a 90 day/ 1 year warantee, your choice. about the same cost.

Hello,

Yes this is a major problem. What I mean by that is, when ever you pull a plug and there is heavy oil on them, it comes from only two places. Head gasket seal is leaking where it comes down and seeps on to your plugs or your rings gasket is shot, so the oil is getting past your rings and getting on your plugs. Point is this, sense you have pistons that stopped working, you for sure need a ring job, and looks like a piston/ring job, this I hate to say it is a top engine rebuild. Point is, you can't just fix part, it is not going to work for longevity. You would need at least the top end rebuilt, that is where they bore out chambers, new pistons, rings, head gasket and so forth. This can be costly, guess on average top end rebuild can run at average shop 1,500 plus. For sure get at least 3 prices if you decide to have it done. Sometimes your better to get a new rebuild and have it put in, with your engine as part trade for new rebuild. Because normally, if you rebuild top end and not the bottom, then that is on borrowed time. I hate to give the bad news, but that is where it looks like what you need. Mike

blue smoke is usually oil burning- is it light or heavy- if light- change oil and go up one grade- rings are worn- if heavy- time for a rebuild- rings need to be replaced. but for the money on rebuild- could find car newer and lower milage

I'm sorry to hear that!
When you get it fixed get your injectors serviced as holes in pistons are usually caused by pre-ignition ( pinking ) or running too lean.
If the injectors were left wet ( can happen if a blown head gasket was the cause of the first rebuild ie water in the bore ) , or dirty , they may not be delivering enough fuel causing the top of the piston to get too hot and melting a hole in it.
Option 2 , the timing was set wrong, ( too far advanced ) causing pre-ignition and ending in the same way.
Good luck with the rebuild.

Hi, pressure build up in the sump might be caused by a blown head gasket, valves not sealing properly or piston rings that have collapsed. You will have to do a wet and dry compression test to establish whether it is the piston rings, valves or head gasket.

Lost of compression is due to either leaking head gasket, valves not closing and seal properly or piston rings are worn and need replacing. One can tell if you have bad head gasket, oils contaminated by water when looking at dip stick, bad valves cause some smoke and run rough, worn piston rings will cause lots of blow-by and will cause white smoke heavily and also runs rough. Being 1968 original motor and never have been rebuilt will probably have over 100k mile will be needing tear down and rebuilt. Rebuilt it correctly will get another 100k plus. being 1968, doing your head and valves job or replacing head gasket if that is the problems and you can get by it. worn rings, I would rebuilt it completely instead repairing one or two cylinder unless you plan to get rid of it.