I Seamfoam my car yesterday, and for some reason I think I was revving it too hard, at one point there was smoke coming up from the engine (not smoke from the Seamfoam), A mech by my house that did my water pump a few months back told me to pour some in the brake booster, let it sit for 10 mins then add the same amount to the booster again, then put the rest in the gas tank then revving it at 4000 rpm, check out the videos below for yourself

Parts 1 30s

Part 2 3:41

 

I have seen where the smoke will come up from the engine compartment. It's possible you have an exhaust leak (usually the flex pipe) that can cause this. In the future it is better to drive the car after the initial huge cloud that comes out. It's not as harmful on the motor and can put sufficient strain on the motor to clear everything without having to rev it to the sky. Your plugs are probably fouled at this point too.

 

I don't understand the term "foul" my car starts, and drive fine just as it did before, with no smoke what-so-ever

 

Your car at idle does not sound that good. It has high pitch screeching or some type of whistling sound. Probably get it checked or try to figure out why you have that sound. Also your idle seems really high, it should be 650 to 700 tops. Try reducing your idle to save gas and for better performance as good normal idle will reduce engine temperatures and will keeps the radiator from coming on constantly.

 

Huh?

I thought the 4th Gens had manual radiators.

 

The term foul implies that now that you've cleaned all of that gunk out of your intake there is a large amount of it caked onto the spark plugs. That's why it's recommended you change the spark plugs right after this procedure.

I did this same thing on a Murano the other day. For giggles I did a before and after of the one of the spark plugs. Before the Seafoam treatment the plug looked like it had normal wear and tear. After the treatment it was covered in carbon.

The majority of it will most likely burn off but it's comparable to cleaning your intake but not bothering to change a dirty air filter at the same time. Kinda defeats the purpose.

 

it's from the alternator. some do it, so don't. and yeah the idle is pretty high.

 

you both wrong, the sound was from a yellow school bus that stopped beside me lolz you really think a maxima would idle like that, you can hear it move off at the end of the video.

if my idle is high then how am I not getting a code for that, and how do I do about changing the idle if I wish to do so?

 

You will only get a code if your idle is at 1500 rpm or higher. With the engine warmed up it should be at 650. Heres a pic of the iacv that has a black screw that control the idle speed. To adjust your idle speed get your car warmed up to operating temperatures and take of both of the tps sensor wires and start the car and see where it idles. Then if its higher than 650 or 700 turn that screw in and bring it down.

 

Thanks for the info, I did it, but it wouldn't go all the way down to 600-650 mark without almost stalling when I rev it up, I record myself doing it, please be warned it's 7 mins long

 

nah, your alternator whines/whistles. mine does the same.

 

Nice mr2 turbo with the gen 3 motor in it. Very clean. I got a 1991 mr2 turbo.

 

at what part of the video did you hear this whine, the only time I ever hear my car my a whining sound is when i start it up on a cold morning an try moving the steering when its a bit frozen

 

at the start of the second video right after 5 seconds of it when you start revving it sound like something high pitch squel or grinding noise or something.

 

all throughout the video when you're near the passenger side.

btw your idle is perfect now

 

Ima have to do a next video when there's no traffic around because if my car was making a high pitch noise or whining then I would would, I'm sure theres a new alternator in there aswell, however I will do a next video on my camera, and not on my phone, that one picks up sound better

 

No your idle should be at 700 rpm and if it is thats good. Just keep it at 700 and you should notice better and smoother braking, better gas mpg for sure and transmission shifting a lot smoother.

 

plus that light was just flashing because you took off the tps sensor wires. OD light will just flash sometime if you take the wires off after that you will porbably never see it again.

 

Yeah most time the car was come to a hard stop as it downshift (automatic) ,but it does feel better, I'm looking to see how the gas mileage part plays oit