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ionmachiman
User
Jun 13, 2009, 3:14 PM
Post #1 of 7
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hi
car:nissan altima 93, 2.4 liters, automatic, 208000 km
I bought this stuff called "tune-up-in-a-can", a spray can, that is supposed to clean the internal parts of the engine
On directions it is written " ... disconnect the vacuum hose at engine. Insert the tapered end of nozzle tool into vacuum hose. Spray product into prolonged bursts-do not stall the engine. When can is empty reconnect the vacuum hose to engine. Increase engine speed repeatedly to exhaust remaining product"
Now, where should i find that vacuum hose going into the engine?
ty
it is my understanding that if i connect the can to the hose, i will spray into - where that hose is coming from-not spraying into the engine??? is this the way to do it? don't i need a T connection on that place so everything is connected normally?
(This post was edited by ionmachiman on Jun 13, 2009, 3:20 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 13, 2009, 3:24 PM
Post #2 of 7
(2738 views)
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Re: tune-up-in-a-can
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You just need to find any source of direct manifold vacuum.
You aren't going to fix much with that. You might clean the valves a little but not much else.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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ionmachiman
User
Jun 14, 2009, 6:14 AM
Post #3 of 7
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Re: tune-up-in-a-can
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I do have 2 complete fuel system cleaners to use: one is Prestone-complete fuel system cleaner and they say that is based on some detergent, you have to put it in the fuel, and Guaranteed-to-pass one they say clear everything and prepare the car for air care inspection, you put it in the fuel to;can i use these cleaners together with the tune-in-a-can which introduces cleaner through air? is it safe to use both of them?(one through air and one through fuel)?
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Hammer Time
Ultimate Carjunky
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Jun 14, 2009, 6:22 AM
Post #4 of 7
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Re: tune-up-in-a-can
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If you learn even one thing from this it will be that there is no such this as "mechanic in a can".
They are marketing ploys to sell products and will do nothing to solve a problem.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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ionmachiman
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Jun 14, 2009, 6:46 AM
Post #5 of 7
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Re: tune-up-in-a-can
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of course not, what doesn't work properly must be changed;
i think this additives are good for functional old cars, and give a 5-10% better functionality
2 year ago i went to walmart for a complete cleaning of the fuel system (including injectors)
and i saw the mechanic using a pennzoil clean-in-a-can thing; unfortunately i didn't see exactly on what vacuum
hose have installed it. I understand that you do not trust too much these cleaners and didn't use them?
On these cleaners it is written that you should use them every 6000km, or 4 times a year etc
but can something get damaged if i use both one cleaner through air intake and one through fuel?
if i use only one which one to choose?
ty
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Hammer Time
Ultimate Carjunky
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Jun 14, 2009, 7:13 AM
Post #6 of 7
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Re: tune-up-in-a-can
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No, you won't hurt anything..................... You won't help anything either though.
Make sure you have at least half a tank of fuel before adding anything though.
You may have seen a mechanic using it but I assure you that was more for the shop's benefit than the car's.
You could help a lot more by cleaning the throttle body. That will at least help stabilize the idle controls.
Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Loren Champlain Sr
Veteran
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Jun 14, 2009, 10:11 AM
Post #7 of 7
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Re: tune-up-in-a-can
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I agree with Hammer, 100%. Today's fuels already have detergents in them. (at least the major brands; Chevron, Texaco, Union, ect). The stuff they sell that you put in your tank and run through a vacuum port are snake oil. You are doing that everytime you get a tank of quality gasoline. A true fuel system cleaning is done with a machine. Not a can of 'stuff'. Sorry.
Loren
SW Washington
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