Cylinder 8 down on compression and misfire

[Pvklol17]

After taking a trip to Mexico I got a cylinder 8 misfire code and car did not run right. Pulled into a parking lot popped the hood and my air intake filter was covered in oil and the intake tube had a puddle of oil in as well so I limped it home. Next day I decided to do a compression test and every cylinder was at around 230-250psi except cylinder 8, it was at 60psi and that spark plug was covered in oil as well. Then I poured some oil into that cylinder and did a wet compression test and it was now reading 120psi so I know the rings are gone more than likely. The car is a 2017 gt with a vmp gen 3 blower 88mm pulley and on 93 pump gas tuned by lund. Anyone have any suggestions on what I should do to the engine at this point?

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[seth21w]

Did you happen to get gas while in mexico?

 

[Lime1GT]

Anyway you look at it the cylinder has to be inspected to see if a block is needed. If you have access to a inspection camera you can look into the cylinder through a spark plug hole. That may help to guide you to whether the block is damaged or piston repair only before removing the engine.

 

[EFI]

Sounds like good ol' number 8 overheated. When you take the engine out, make sure to address this issue for future protection.

 

[MiDiablo]

Time for a Sai Li/FFRE short block!

 

[Bluelightning]

Time for a built motor.

 

[Jay-rod427]

Good ole fashioned ring land delete kit!

 

[onlyturbo]

After taking a trip to Mexico I got a cylinder 8 misfire code and car did not run right. Pulled into a parking lot popped the hood and my air intake filter was covered in oil and the intake tube had a puddle of oil in as well so I limped it home. Next day I decided to do a compression test and every cylinder was at around 230-250psi except cylinder 8, it was at 60psi and that spark plug was covered in oil as well. Then I poured some oil into that cylinder and did a wet compression test and it was now reading 120psi so I know the rings are gone more than likely. The car is a 2017 gt with a vmp gen 3 blower 88mm pulley and on 93 pump gas tuned by lund. Anyone have any suggestions on what I should do to the engine at this point?

Sorry to hear that!
Can you recall the exact last run condition your car was in (gear, rpm etc) before going WOT and having the failure?

If it is a ringland then major detonation had to occur somehow obviously.

 

[Boosted21]

After taking a trip to Mexico I got a cylinder 8 misfire code and car did not run right. Pulled into a parking lot popped the hood and my air intake filter was covered in oil and the intake tube had a puddle of oil in as well so I limped it home. Next day I decided to do a compression test and every cylinder was at around 230-250psi except cylinder 8, it was at 60psi and that spark plug was covered in oil as well. Then I poured some oil into that cylinder and did a wet compression test and it was now reading 120psi so I know the rings are gone more than likely. The car is a 2017 gt with a vmp gen 3 blower 88mm pulley and on 93 pump gas tuned by lund. Anyone have any suggestions on what I should do to the engine at this point?

just curious did you have an aftermarket thermostat like a 170 degree thermostat or stayed stock?

 

[Cory S]

Is this a boosted setup running gasoline on stock ring gaps?

 

[Jackson1320]

you can build it or get a short block. a shortblock from a f150 is pretty cheap. you can get a gen3 shortblock for about $2500 new

 

[AvalancheSVT]

do you have the head cooling mod done?

 

[Grimreaper]

88mm on the 2.65 rotor pack is 13 psi according to vmp. Seems like that's usually considered a bit much for pump 93 right?

The 2.3 is usually right at 10psi at 80mm which most accept as pump limit.

Threads old though but would like to know how much timing it was taking. Can't imagine any more than 14 or 15 degrees

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