So you put the stuff in the oil level thing and you change the oil right after??..

 

If i remember right its 1/3rd of the can in to the engine crank case and drive it 40-50 miles then dump it . I haven't done that method so dont take that as gospel . I suck half a can threw the intake to get to the intake valves because with Direct Injection the intake valves don't see any fuel to clean them off and they can get gummed up pretty quick.

 

I havent done it on my cobalt yet, ive also been thinking about it. I did however do it on my beater 95 K1500 TBI. I put half a can through the brake booster, smoked like a bitch! Let it run for like 5-10 mins than shut it off. Let it sit about 10, and did it again, but this time I was under the truck as my buddy put it in cuz I was looking for exhaust leaks (the white smoke is a great way to find one, which I did). Truck did run a lot better, and got rid of the valve tap - valve was prob just sticking, so you know it cleaned it out.

 

So you just shooted the stuff through the intake... couldn't you just remove the intake and shoot it through there?..

 

What about the MAP and MAF sensors? how do you avoid those? dont wanna ruin the sensors..

 

I don't think there is a way around either if you're trying to put it through the air intake system, and some of these products say to not use with vehicles equipped with MAF sensors. Like the AMSoil version for example.

I say check with a dealership before using any of this stuff on an LNF at least. Our cars aren't like most cars out there because of the direct injection so it's better to be safe then sorry.

 

Not threw the air intake ..... threw a vacuum line on the intake manifold . That bypasses the maf and all the chargepipes and intercooler .

 

Brake booster hose is a great way to get it in

 

you guys scare me sometimes, some of you seem so sure of whats right and your gonna make someone **** something up lol.

 

Take 1/3 and put it in the gas tank
Take 1/3 and put it in the crankcase
Take 1/3 and funnel it SLOWLY into the brake booster hose
Turn car off
Let sit for 10 mins
Turn car back on
Run all that shut out , by either reving the engine up on and off, or drive around till no more smoke billows out the back,
Drive on that tank of oil for a bit, 50-100km?
Change oil
Done

I do it the same way everytime, never any issues

 

Yes on the MAF..however, some of that **** gets *recirculated* through the PCV system and will pass through the turbo (and BPV which is rubber?)..charge pipes and intercooler for another *go round*. Maybe not much, but those components will see some of it. Personally, I wouldn't touch that stuff on this car. Just my 2 cents worth.

 

I've been usuing it for sometime and it really helped the car when it was new and had tight valves .... there was an inmediate change in performance and the 35-4K rmp bog was gone. I've used it as a preventative maintaince product ever since. It would have a hard time getting to the PCV system when it basically sucked right into the intake ports in the head . I use the nipple that hooks to the vacuum tank on the intake MANIFOLD along with a small piece of vacuum hose to suck the product straight into the ports.

 

 

Yep .... disconnect that hose and grab a small piece of vacuum line and hook it up to the nipple in the intake Manifold ..... use the small piece of line to suck 1/3rd -1/2 of the bottle in and shut the car off for 10 minutes or so . then prepare for some smoke.

 

doing this on friday

 

I wouldn't put any solvent in the crankcase of a turbocharged vehicle. Ever. If you're running synthetic there should be absolutely zero reason to run an engine cleaning product through the crankcase as there's a chance it could damage the turbo's bearings if it spools up under load while the product is in the engine or if you don't get all of it out when doing the oil change. If you want to put Sea Foam, ATF, kerosene or some other product in a sludged up old engine from fifty years ago, idle it up to operating temp, then flush and do a couple oil changes in short order it might help remove the sludge and deposits but it's definitely not needed on a modern engine that was specified with synthetic.

I have somewhat mixed opinions on using it in the fuel and intake tract. The contents of Sea Foam are not much different from other fuel injector cleaning products and it shouldn't hurt a regular fuel injector and I don't think it would be an issue with the direct injection injectors and high-pressure DI fuel pump, but then again in high concentrations I wouldn't want to say for certain.

The intake tract I could see it possibly helping to remove deposits from the head of the intake valves but I'd be concerned over some of the sensors and materials used in the vacuum harness that you have to use to draw it into the engine. The Ecotec valves should rotate slightly during regular operation and that will help keep deposits off the valve seat and ensure good sealing. There also shouldn't be as much deposits in the first place as most of them develop from the fuel hitting the valves (which modern fuel additives help reduce) with oils from the valve seals and oil vapors from the crankcase ventilation being the secondary source.

If you could safely inject a cleaner it may remove and reduce some of those valve deposits that do develop over time, but GM does have to emissions certify the car and did a ton of testing and if you're using the correct fuel as well as motor oil then any deposits that form on the valves shouldn't be a long-term issue in a well maintained car. If I was really concerned I'd pull the intake manifold every 75-100k miles and manually clean them or look into periodic use of water injection which won't have the downsides of dumping solvent into the vacuum harness.

 

Ok.

 

I just dump Chevron Techron Fuel Injector Cleaner in my fuel tank and keep it simple.



I tend to set off the EVAP OBDII code off every time I do it.

 

^^Only problem with that is...it won't hit the intake valves.

 

I wonder BG44K will do it? Is it too late to dump that after an oil change? I'm close to 15K right now.

 

I wasn't saying the product won't hit the intake valves, I'm saying the manner in which you are using it won't hit the intake valves. Anything in our gas tank will not hit the intake valves.

 

Modern Performance took this picture on an LNF with 9k miles on the engine



At 40k it should be pretty gross.

 

wow. haha using regular there maybe?

but wait use shell nitrogen enriched fuel, thatll do it. LOL

 

there is a vac line that runs stright into the mani, use that one, thats what i use. easy and its right there. oh u will need a short hose to do it there, i have one for seafoaming but ya cost u a few cents all u need is a foot

 

Any pics?