Plumes of white smoke after MS installation
 

So after days of trying to get my MS working I finally did today. Then what I believe to be my head gasket has been blown. Car started and ran fine no smoke or oil burned at all. But after I installed my MS (after a rather lengthy trouble shoot because only 2 cylinders wanted to fire) the car smoked like a chimney. I though it was all that fuel from the unfired cylinder but then water was leaking out my tail pipe after my first 2 cylinder start. Could MS have done this? Or is it just coincidence? The cylinder head is the only place internal leaking could occurs right?

Where do you live. If its been rainy its probably just condensation. I pulled apart my exhaust the other day and water poured out.

What color did it smoke? White is coolant, black and blue is a shitty tune. Well, black mostly. With high humidity, my exhaust sprays water for like 3 or 4 minutes.

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You probably didn't know that seafoaming your car is not part of the standard MS install.

I'm curious as to what it is, when I first put it in my barn it got really cold then hot, condensation was unbelievable, maybe absurd amounts of water entered the exhaust and its burning off. But it smelled really sweet and when i had the car running on 2 cylinders there was no smoke at all, so the break is probably on cylinder 1 or 4

filled my car up with seawater, like the manual says

Why are you determined to consider your engine toasted? You can fire two cylinders and not fuck things up. This just means your engine was in poor shape before megasquirt and your fishing for answers.

What does your wideband say? You do have a wideband right?

https://www.miataturbo.net/attachmen...ine=1456233228

Oh my god, you're definitely new to cars.



What did you mess up that caused your lengthy troubleshoot and running on two cylinders.

Yes I have a wideband. I really think the head gasket is blown because it shows all the signs of a bad engine. It really does look like I seafoam'd my car. Car ran fine before ms installation, had good power and was really healthy with only 101k on the clock. The 2 cylinders were not firing because of a bad solder joint on an IAC output mod. Once I fixed that it smoked alot, maybe it was condensation, maybe it isn't. Thats what I'm trying to figure out. Wideband read that it was running lean at a 15.7-16:1. Pulled the plugs and re-calibrated the sensor, every thing was jet black. I dont want to run it alot until I figure out the issue because I heard coolant kills O2 sensors.

Signs of a blown head gasket-
-Coolant leaking externally from bellow the exhaust manifold.
-White smoke from the exhaust pipe.
-Overheating engine.
-Bubbles in the radiator or coolant overflow tank.
-White milky oil.
-Significant loss of coolant with no visible leaks.

Only sign I observed was white smoke and smell. Any major objections to run it more when I get home? Will check oil to see if it's milky. Seemed a good color when I pulled the dipstick yesterday. Thanks for the advice

Pressure check the coolant system or see if you're blowing bubbles through the overflow tank.

Change your oil. Do a leakdown test on all cylinders. Built a new motor. Have a beer.

Would a head gasket show a compression test?

Do you have a cat?

:laugh:

Yes, but I don't have to pass emissions in MA and I'm sure it's the original cat

Where in MA?

Do you have a dog?



Don't worry about running it more. If your oil is fine, clean the plugs or replace them. Allow your car to warm up and dial in idle and fuel so it's stoich. If you are still blowing smoke, then investigate other gasket possibilities. I doubt it'd be from the actual MS install. All your required fuel settings are correct? Stock injectors?

When I first started my car it ran pig rich, blew what looked like white smoke, but it was fine. Even firing on two cylinders, my engine was ok. Unless that was my last motor, and it actually blew up. But I don't remember. You'll be fine

Are you just trolling us?

you sound retarded.

Yes, I didn't understand how seafoam worked it's way into the equation so I figured I'd play along.