2020 Raptor New Short Block - Oil in Cylinders

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

OP
OP
R

RE Mac

Member
Joined
Mar 15, 2023
Posts
31
Reaction score
10
Location
35226
Yeah, you’re right. They do the same thing with diesels in boats and it rarely works out best for the boat owner.

The originally said at idle (only at idle) oil was being pushed into the turbo because of higher than “normal” pressure. Apparently a widely known issue because ford had a service bulletin to reprogram the computer. The service manager swore this would fix the problem, even talking down to me saying he’s done “a thousand” of these and my truck is not “special”. I basically told him to kiss my a$@ and to keep the truck for a few days and drive it himself. That’s when he realized I was right.

There was damage to the cylinder walls, according to the bore scope.
 

FordTechOne

FRF Supporting Member
Supporting Member
Joined
Jul 29, 2019
Posts
6,672
Reaction score
13,068
Location
Detroit
3.5s are great arent they? i hate to start a "theres no replacement for displacement" argument, but pushing V6 engines to 450hp by forcing 7.0L of air into them seems great on paper... but its all in the execution.
The execution has proven robust in millions of trucks. There is a misconception that factory F/I engines are just N/A engines with turbos added, which couldn’t be further from the truth. They’re engineered to handle F/I; it’s not an afterthought.

This thread is a single example in which the OP ran his truck low on oil and internal engine damage occurred, which is not at all surprising.

The update that the Service Manager brought up can resolve oil consumption caused by high engine vacuum, but it cannot fix damage that has already occurred as a result of running low on oil.
 

thatJeepguy

FRF Supporting Member
Supporting Member
Joined
Nov 28, 2021
Posts
2,496
Reaction score
3,714
Location
GA
The execution has proven robust in millions of trucks. There is a misconception that factory F/I engines are just N/A engines with turbos added, which couldn’t be further from the truth. They’re engineered to handle F/I; it’s not an afterthought.

This thread is a single example in which the OP ran his truck low on oil and internal engine damage occurred, which is not at all surprising.

The update that the Service Manager brought up can resolve oil consumption caused by high engine vacuum, but it cannot fix damage that has already occurred as a result of running low on oil.
Is it the high tension ring pack and low oil that lead to cylinder scoring?
 

thatJeepguy

FRF Supporting Member
Supporting Member
Joined
Nov 28, 2021
Posts
2,496
Reaction score
3,714
Location
GA
That’s a contributing factor, as well as the fact that these engines have oil cooled pistons. Once the sump starts drawing air the damage is not far behind.
I was going to mention the oil cooling Jets. Those are under the piston skirt are they not?
 
Top