Bad Valve Seal #6

[Scott Wilson]

So I bought my 16 back in August 2016 and about 6 months after, I noticed a plume of smoke on hot restarts. I thought nothing of it as I was on e85 and sometimes that goes with it. Fast forward to 2018 and the smoke had gotten worse and more frequent. I went ahead and pulled all the plugs and #6 looked like this...

After considering it might be the valve seals and not the guides(no bbq tick) I decided to purchase a valve spring compressor from Freedom Racing that would allow me to change the valve seals with the cams IN PLACE! :clap2:

(purchase)
http://www.freedomracing.com/4v-5-0l-coyote-valve-spring-compressor.html

(how to use)
[ame]

It was a big learning curve understanding how to use the tool and my biggest fear was dropping a valve or loosing a retainer in my cylinder head. Here is a picture of the bad seal on one of the exhaust valves, it is hard to see but the valve seal on the far left is slightly larger in diameter than the other 3...

After reassembling I drove the car for a few days and made lots of WOT pulls, cruising, and hot restarts and here is a picture of the #6 plug today...

As you can see the problem was the valve seal on number 6. I replaced the seals with FelPro valve seals from Rock Auto and before you ask, Yes I did try to get the dealer to fix it and no they didn't see anything wrong as I was only burning 2qts every 5000 miles

Nonetheless I feel very accomplished in being able to complete the task and move on. :cheers:

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[Lonmon]

Nice job!

 

[Anthony 05 GT]

Yeah man! Dealer should have definitely taken care of that. Good job

 

[ahl395]

Awesome job, thanks for sharing!

 

[cop on my back]

You probably took your time and did a better job than Ford would have, nice work!

 

[16EcomustangDIB]

Great job!

 

[Cobra Jet]

Great info and now you wonder how many other Coyotes could have the same issue regarding oil consumption ... and it could just be something so simple as valve seals.

In your pics, it’s clearly visible that the hole is larger than the rest. I’m wondering if that valve seal was either manufactured defective and it made it past the supply chain QC review OR if it was mistakenly a wrong part pulled from another parts bin that is to be used on another Ford engine...

 

[Scott Wilson]

Great info and now you wonder how many other Coyotes could have the same issue regarding oil consumption ... and it could just be something so simple as valve seals.

In your pics, it’s clearly visible that the hole is larger than the rest. I’m wondering if that valve seal was either manufactured defective and it made it past the supply chain QC review OR if it was mistakenly a wrong part pulled from another parts bin that is to be used on another Ford engine...

I wondered the exact same thing. Another guy on one of the fb groups has the same issue on another cylinder and it makes me wonder if a bulk order of valve seals got mixed in with valve seals from a 5.0 that might have slightly larger valve diameters. His is also a 16 and I don't know if the gt350 valves were larger diameters or maybe even the f150 valves

 

[JackBauer]

thats a nifty tool for the valve spring retainers. good to know thanks for the writeup.

i battled alot and made my own tool to replace the seals on a car i used to own, that was fun.

 

[NZ GT mustang]

So I bought my 16 back in August 2016 and about 6 months after, I noticed a plume of smoke on hot restarts. I thought nothing of it as I was on e85 and sometimes that goes with it. Fast forward to 2018 and the smoke had gotten worse and more frequent. I went ahead and pulled all the plugs and #6 looked like this...

After considering it might be the valve seals and not the guides(no bbq tick) I decided to purchase a valve spring compressor from Freedom Racing that would allow me to change the valve seals with the cams IN PLACE! :clap2:

(purchase)
http://www.freedomracing.com/4v-5-0l-coyote-valve-spring-compressor.html

(how to use)
[ame]

It was a big learning curve understanding how to use the tool and my biggest fear was dropping a valve or loosing a retainer in my cylinder head. Here is a picture of the bad seal on one of the exhaust valves, it is hard to see but the valve seal on the far left is slightly larger in diameter than the other 3...

After reassembling I drove the car for a few days and made lots of WOT pulls, cruising, and hot restarts and here is a picture of the #6 plug today...

As you can see the problem was the valve seal on number 6. I replaced the seals with FelPro valve seals from Rock Auto and before you ask, Yes I did try to get the dealer to fix it and no they didn't see anything wrong as I was only burning 2qts every 5000 miles

Nonetheless I feel very accomplished in being able to complete the task and move on. :cheers:

Hi. I have a 2016 Gt Mustang and is eating oil this engine has only 6400km on it and had consumed 2 litres of oil. We did 4800 km for the first litre and only 1800 km for the second litre. It's getting worse. Ford have been topping it up. I have not pulled the plugs yet.
Is there a TSB for this oil consumption problem?

 

[DeepImpact89]

I am encountering this issue too, I got a 2016 mustang gt as well.

 

[NZ GT mustang]

I am encountering this issue too, I got a 2016 mustang gt as well.

Ford hasn't fixed this one yet. The mustang is in there right now. I should hear back in the next day or so. I will let you know.

 

[DeepImpact89]

Ford hasn't fixed this one yet. The mustang is in there right now. I should hear back in the next day or so. I will let you know.

You still under warranty?

 

[NZ GT mustang]

You still under warranty?

Yes I have a 1 year warranty which has expired, but Ford are standing by it. They have said they want to do another oil consumption test, so I will pick it up tomorrow. I will advise you on my progress.

 

[blue5.slow]

So I bought my 16 back in August 2016 and about 6 months after, I noticed a plume of smoke on hot restarts. I thought nothing of it as I was on e85 and sometimes that goes with it. Fast forward to 2018 and the smoke had gotten worse and more frequent. I went ahead and pulled all the plugs and #6 looked like this...

After considering it might be the valve seals and not the guides(no bbq tick) I decided to purchase a valve spring compressor from Freedom Racing that would allow me to change the valve seals with the cams IN PLACE! :clap2:

(purchase)
http://www.freedomracing.com/4v-5-0l-coyote-valve-spring-compressor.html

(how to use)
[ame]

It was a big learning curve understanding how to use the tool and my biggest fear was dropping a valve or loosing a retainer in my cylinder head. Here is a picture of the bad seal on one of the exhaust valves, it is hard to see but the valve seal on the far left is slightly larger in diameter than the other 3...

After reassembling I drove the car for a few days and made lots of WOT pulls, cruising, and hot restarts and here is a picture of the #6 plug today...

As you can see the problem was the valve seal on number 6. I replaced the seals with FelPro valve seals from Rock Auto and before you ask, Yes I did try to get the dealer to fix it and no they didn't see anything wrong as I was only burning 2qts every 5000 miles

Nonetheless I feel very accomplished in being able to complete the task and move on. :cheers:

I think I’m having the same exact issue. I will pull the plugs today and check if they have oil on them

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