Engine Issues

[AlexH]

Hello all,

New to the fourm and over all newbie to the sho scene. I bought my SHO about a year ago and LOVE it!
Here is a story, sorry it has to be said. I was having a small coolant leak I thought it was coming from the upper radiator hose so I went into O'Reilly's and let it idle, maybe 20 mins, and came out to little puffs of smoke from the exhaust. Seemed off but didn't think anything of it. Shifted to drive and hit the gas and let out a huge smoke cloud! Took it to the dealer as I thought the turbo seals were gone but the water pump failed and dumped in the oil and was causing blow by. New water pump, timing chain, and tensioners. All was good. 10 days go by and I come out this morning and start it up big cloud of white smoke for a few seconds and it's fine. Rev some, nothing, all good just a rough idle. Go to work. Leaving work remote start from building, big smoke cloud again once it clears it's done. It will do it of it sits for like an hour or so.

Does anyone have any suggestions before it goes back to the dealer??

 

[SM105K]

Back to the dealer.

 

[AlexH]

That's that I figured thanks!

Sent from my SM-N960U using Tapatalk

 

[SHOdded]

What year SHO, Alex, and how many miles? What kind of drive cycle does it see? Highway, mixed, city ...? Has the coolant been changed?

I would check for a possible failed injector, even though it is WHITE smoke, not BLACK. It is also entirely possible the intercooler is full of crap from the water pump failure, and it is getting sucked into the throttle body/engine, causing the rough idle/smoke symptoms. have them check/clean out the intercooler. hopefully no metal fragments in there.

 

[shoblock]

I would remove the intake hose from the throttle body and look for signs of anti-freeze. Coolant circulates through both turbos and a bad seal could send coolant into the intercooler.
Marking the coolant reserve tank when the car is cold is always a good idea. Over time you can see if the fluid level is going down.
Also, a leaking water pump likely sent anti-freeze into the oil. Older SHO's had a double seal on the water pumps, and were more likely to put the first sign of leak on the garage floor rather than into the engine.
If anti-freeze went into the crankcase, I would do an additional oil change and see if the oil coming out has any residual anti-freeze in it, which could also cause the smoke.
Shoblock

 

[Jeff2017]

Newer SHO's have a double seal on the water pump also. Also, in 2012 or so they got an upgraded drive sprocket and according to Ford Tech Makaloco on youtube he hasn't seen one with the newer sprocket design dump anti-freeze into engine the yet.

 

[shoblock]

He is limited by the few that he sees. The newer pumps stopped putting the double O-ring seal on the pump FACE around 2013. Before 2013 there was an O-ring around the perimeter of the pump on the FACE outside and inside the Weep hole. the leak would have to get past the first O-ring to go to the Weep hole which would then drip on the garage floor. After 2013 there is just a single O-ring. it can still leak past the Weep hole but can also leak into the crank case depending on where the seal is broken. There is a second set of seals behind the water pump but if those leak you would have water in the valley.

 

[SHOdded]

 

[shoblock]

View attachment 9723

The pump on the right matches what we were building motors with until on or about 2013, after that we were building motors with the pump on the left. Had I been in the plant, I could have supplied these same photos because I still have an older style pump hidden away. Note the weep hole is open to the slot. The pump on the right is preferrable, of course, but I would have to see the other side to know if it would fit 2014 and newer cars.

 

[SHOdded]

The old style pump will not fit newer cars due to being a single sprocket design. I suppose if you changed the timing set to go with, you could make it work.

 

[Jeff2017]

Wow! Guess I will be trading in before I hit 100k.

 

[SHOdded]

The key is cycling the coolant, many people treat cars like throwaway things, and end up way shortening the lifespan.