My Evo has been stationary for 7 months. It has be tuned with a dual map to run
E-85 or 91. It had a full turbo-back exhaust.

I added these mods after the tune. I put back my stock cat which was only run on 91. I did the STM fuel pump rewire kit. Changed the coolant and used the Lisle funnel kit to make sure there are no air pockets in my coolant. I also added the AMS fuel replacement line.

The Evo started with no problems but I am getting a lot of white smoke on start up running E-85.

It has something like a coolant smell. I started it a couple times but I haven't had the chance to drive it on the street. Everytime I get white smoke. I have checked the oil and it is clear. My wideband is reading 14.7-15.1 so I am kind of stumped as to why there is white smoke.

Anyone have any advice to share?

 

white smoke with coolant smell typically means blown headgasket.

 

Plugged PCV? I know that issue causes a little smoke but not a lot like you are describing especially at idle.

 

The last time I drove the Evo it did not have this issue. If it is a blown head gasket that is the first time I would have seen one blow while idling.

I plugged my intake manifold's boost nipple. The lines that runs to the pcv valve on the valve cover goes to my catch can and so does the other port on the valve cover.

I only see white smoke on start up and revving the engine. If it idles then the exhaust will be less smoky kind of similar to when it starts up on a cold day.

 

many of the cars I have seen on E85 have white smoke, idk why though

 

This. Several of the guys I know running E-85 seem to produce a lot of white smoke.

 

Yes I have noticed that as well but this is different. The white smoke before would be light and transparent and when the car warmed up it would go away. The exhaust would also still smell like e-85. Now the exhaust smell is different and the smoke is not going away even after I idle the Evo for 20 minutes.

 

If it has that sweet coolant smell like you described, watch your coolant levels. Mark the resevoir while cold and drive it for a week and check again while cold. If the level is going down than your car is consuming coolant. The most likely place is a blown headgasket. If however the coolant level is the same, then you are not consuming coolant, and that "coolant smell" is something else.

 

It could be oil smoke that looks white. My DSM was doing this, it looked white but smelled like burnt oil. I let it run in the garage with the door down and then it was blue once a little thicker. No, I didn't stay in there to sample the carbon monoxide.

Anyway, my problem was valve seals. It only smoked at start up and smoked the most at hot start up after sitting for about 20 minutes.

 

^This is the one answer that makes the most sense. I have asked this question on three different forums and I would like to thank you for sharing your knowledge. Every other forum is using the blown head gasket excuse which I dont believe. My coolant level is steady and doesn't change everytime I start and idle my Evo.

Thanks barneyb!

 

So it turns out my problems were even more minor.

I towed my Evo to FFTEC. I got there a little early for my appointment but that didn't matter. As soon as Dave arrived he started working on my Evo. First they did a diagnosis and then a little while later they suggested a boost leak test. I agreed and the work on my Evo progressed. A couple simple issues were found by Dave and they were fixed. A couple issues I remember were that the spark plugs were loose and there were a lot of leaks coming from my couplers. This was the first time I had my Evo worked on by FFTEC and overall I was impressed. They were professional and courteous and guided me through the repairs. Dave spent most of the day finding boost leaks on my Evo but he also managed to install barb fittings on my Synapse bov. He also installed new lines for my catch can, an fittings on my valve cover, an fittings on my catch can, installed brake pad shims, and bled my brakes. He also checked for leaks on my drivetrain, and adjusted my parking brake. It felt like everyone at FFTEC was helping me to get my Evo back on the road at 100%. For that I am grateful to have not only one set of eyes to look over me but a whole team. I was prepared for the worst and I am glad my worst fears were unfounded. It felt awesome to drive my Evo back home that day after 7 long months.

Thanks FFTEC!

 

You said the car sat for 7 months right? If there was e85 left in the tank it could have absorbed a lot of moisture.

 

I drained both tanks and put new fresh E-85 and still had the smoking problem. I did this and ran my Evo for 15-20 minutes for five days straight before I made this thread.

 

So the smoke issues is resloved?

 

Yes the smoke issues are resolved. When you go E85 be sure to check/change your spark plugs. Make sure they are correctly torqued and the gap is the same across each one.