So i did the famous swap. No CEL nor ECU codes. Yet, took it for a spin and white smoke appeared from the exhaust. I was just thinking it was burning all of the left over residue from the previous car. But after about 15mins of driving, my temp gauge was climbing. It passed the halfway mark, instantly i knew something was wrong. I was a good two miles away from home and by then the engine got to the red zone.

So today, I checked my rad it was dry. I add water and full sol of radiator fluid. Ran the car at idle for a good 15-20 mins, car looked like it warmed up. But still smoke throughout this whole deal. So I went to Vatozone, and got Seafoam. Foamed my car.
And...


Still white smoke after about 30-45mins....

So is it possible that i blew my head gasket or warped my head?

If so, what head gasket should i use? what should i avoid?

I DD this car. 91 Civic Dx hb with D15b2 I/H/E basically with the MPFI swap too.

Also, changing a crank from a D16z6, is it hard?

 

Dang same thing happened to me and it lasted another 6 weeks till it just died and I removed my head and there was water in my cylinders. Replace it with a metal head gasket. Stock 3 layer or a z6 or y8 will work too. Its gonna be a pain taken that stock cardboard looking gasket off tho.

 

That's what my friend said. Smells liks water in the pistons..


anyting else?

 

That's pretty much it. Well since that happened to me I just ended up building a d16a6 for all motor but if its your daily and don't plan on rebuilding then just change the gasket. Any ideas on how it blew in the 1st place? Mine went out cause my radiator cracked and my temp gauge wasn't working. By the time I fixed the temp gauge sensor was fixed I seen that it was overheating and noticed a crack in my radiator so i replaced it with an ek radiator but it was too late. The damage was done lol. Check it.

 

definitely sounds like a headgasket. I rebuilt my entire engine in my apt. I spent months on it getting everything just right. then it turns out I put a crappy headgasket in there and I put way too much oil on my headbolts. Too much oil on the headbolts and they will literally push out over time. That combined with my crappy paper headgasket and after only 600 miles my headgasket was toast. I went and got a good Honda Headgasket (pure metal) and new headbolts. Cars running fine now.

 

when my dad did his mpfi swap the new bracket on the im didnt fit right and was actually pouring antifreeze into the cylinder.. not sure if that happened to yours but might wanna check before you rip the head off

 

Lol im building mine in my apt lot port too.

 

My friend did the same thing and bought a motor from a company with warrentee and brought back motor after motor and re installing them and every one was smoking. Ended up being a cracked intake manifold putting water in his runners. Might wanna look if one runner is cleaner then the others... Or maybe you put a water lune where a vacume line was suppose to go???

 

I was wondering about the differences in intake vaccum/coolant hoses cause they are def. in different locations. I didnt see much info when looking at the mpfi swap faq.

 

Sounds like you have a coolant line hooked up to a vaccume line. Your feeding coolant into your engine.

 

why didnt u check ur rad before ur test run

 

Did u torque da head down right? Coolant hose hookedup to a vaccum line? That's unlikly.

 

^^check befor ripping the head off

 

Just go pick up a manual for your car. It should show the different routs for coolant and vacume lines.... Pull off the intake and look at the runners, if one is clean and the others are black or dark then you mixed up 2 lines. There is no reason why the head gasket woulf go bad when swaping a intake on. It sounds to me like a water line where vacume lune is suppose to be or a cracked mpfi intake... But the answer lyes in the Intake runner... Check that out