FYI, its not a head gasket on your repair ticket. Its a valve cover gasket, Toyota calles it a gasket, cylinder head cover.
The big problem I have is that I can’t picture the parts, have never looked at this engine, in fact haven’t looked at any engine seriously in 30 years, and they’ve changed just a bit.
Well, I just looked it up. I bet the tech did NOT remove the front cover, simply because there is no eng coolant billed, not water pump gasket or seals, NO oil. No way that job is being done and zero coolant get in the oil system. I dont blame hime one bit for “short cuts”. Thats the name of the game is to beat the “time”. However, comebacks kill that
When you posted the OP, I did a search for information on running an engine without oil. One of the top hits was a short video demonstrating what happened when this was done to a small engine. Basically, the end result was as like others have said, wear shown as grooves in the cam shaft and bits of metal in the oil. However, one interesting thing that they didn't expect is that for the most part the (air cooled) engine ran at the same temperature or even slightly cooler than when it had oil in it which they attributed to the oil acting as a heat sink.
Im real curious as to why and how they come up with replacing the block for a misfire code. I get the no oil reason, but missfire happens in the combustion chambers and due to the cylinder head and up components. Seems to me if tbey suspects block/bottom end damage, then guaranteed cylinder head(s) damage . Be cheaper, quicker and easier for all involved to just do a complete engine swap
Yeah, my ignorance prevents me from asking questions that the service advisor probably can’t answer, but I wish that I knew enough anyway. He specifically said that the heads were good, but it does seem odd that the block is bad but the pistons and heads are all good. I’ll push him a little by text.
The heads will suffer more damage than the block, gravity will make the heads have no oil before the bottom end.
Seems to me if the piston rings had time to burn up the top end would’ve been long gone.
Yeah, if the rings/cylinder walls are worn and causes low compression, the heads are smoked. Plus I would think it would be burning oil.
I thought they did the cam and gears on the right side?? That isn't a smart decision on their part, they will be changing out the heads too before this is over.
Well it seems that I’m getting there, just one piece at a time. What’s left of the original, both heads, the gears and cam on the drivers side, then all the bolt on stuff like water pump, ac compressor, etc.
It could be something as simple as the oil pump is in that side of the motor so it runs higher pressure there so that head stayed oiled up. I’ve got a Cummins engine with a port to check oil pressure on each side of the engine and it’s almost a 20psi difference. I thought it was weird and called Cummins and they said it was correct because of oil pump placement.
You should see him flipflops! LMAO
This is why I do all the work on my cars. That, and it saves me a bunch of money. Unless the job requires me to purchase a tool or equipment that would be more expensive than to just get someone with said tools or equipment to do it.
Quoting myself from post #67 in this thread:
My transmission in my'99 Taurus had codes six months after I replaced it myself with Ford Remanufactured unit, three year no mile limit warranty.
It has slacked off pretty heavily since the election. When folks become unsure of their incomes, expenses get cut. The auto industry is usually the first. Unless absolutely needed.
Warranty available items to the dealers may be different than what joe public can go in a buy. Warranty repair work is done in a different fashion to some extent than”customer pay” jobs.
Agree 100%, and I’m over wanting to out them to corporate (whatever that means) to punish them, I really don’t care about their ethics, but I want my butt covered if we have problems down the road. Not sure who to contact, but there is a corporate customer service phone number on the feedback survey that they sent, maybe I’ll just call and ask.
