How to get carbon and unburnt fuel out of engine?
#1
Ghost Ride the Whip
Thread Starter
How to get carbon and unburnt fuel out of engine?
Last time I had my car dyno tuned at XS, they said that my car had a lot of carbon and unburnt fuel in my motor and that they had to back off on the timing and richen it because the motor kept pinging. Because of that I didn't make too much power. Does anyone know how I can get rid of the carbon and unburnt fuel in my motor? I know that there is an additive that you can use for piston engine to let it soak overnight and that will get rid of it, but does it work on rotary engines? Anyone have any ideas at all short of a full motor rebuild?
#3
WingmaN
Join Date: Aug 2002
Location: Fort Worth Texas
Posts: 4,324
Likes: 0
Received 0 Likes
on
0 Posts
To clarify, he is not saying to spray your intake with water as if you were cooling the motor down. But to actually spray water into the intake and into the rotor chamber.
If you mix a little rubbing alcohol with the water I think it works better. Depending on which series intake you have changes where the best point to inject the water from.
If you set it up in a plastic bottle that you can squeeze and shoot short squirts it is best.
Get someone to hold the rpm's at about 3500 or so because everytime you give it a squirt it is going to try to stall. If you try it at an idle it will die. Let it steady out between squirts and probably 20 squirts will work for you.
If you mix a little rubbing alcohol with the water I think it works better. Depending on which series intake you have changes where the best point to inject the water from.
If you set it up in a plastic bottle that you can squeeze and shoot short squirts it is best.
Get someone to hold the rpm's at about 3500 or so because everytime you give it a squirt it is going to try to stall. If you try it at an idle it will die. Let it steady out between squirts and probably 20 squirts will work for you.
#4
rotary sensei
iTrader: (5)
Join Date: Mar 2001
Location: Virginia
Posts: 2,312
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Scalliwag
To clarify, he is not saying to spray your intake with water as if you were cooling the motor down. But to actually spray water into the intake and into the rotor chamber.
If you mix a little rubbing alcohol with the water I think it works better. Depending on which series intake you have changes where the best point to inject the water from.
If you set it up in a plastic bottle that you can squeeze and shoot short squirts it is best.
Get someone to hold the rpm's at about 3500 or so because everytime you give it a squirt it is going to try to stall. If you try it at an idle it will die. Let it steady out between squirts and probably 20 squirts will work for you.
To clarify, he is not saying to spray your intake with water as if you were cooling the motor down. But to actually spray water into the intake and into the rotor chamber.
If you mix a little rubbing alcohol with the water I think it works better. Depending on which series intake you have changes where the best point to inject the water from.
If you set it up in a plastic bottle that you can squeeze and shoot short squirts it is best.
Get someone to hold the rpm's at about 3500 or so because everytime you give it a squirt it is going to try to stall. If you try it at an idle it will die. Let it steady out between squirts and probably 20 squirts will work for you.
Last edited by Mr rx-7 tt; 02-22-03 at 11:39 PM.
#5
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,827
Received 2,595 Likes
on
1,843 Posts
um your engine has like 5k miles on it? how much could it carbon up in 5k miles?
mike
mike
#6
Ghost Ride the Whip
Thread Starter
your engine has like 5k miles on it? how much could it carbon up in 5k miles?
Trending Topics
#10
FC Mobsta
redline of the **** out of the engine.........BAD....my blew that way...it wasnt a rebuild...but two of my apex seals got carbon locked......
i dont know why you would have to squirt water down the hose...i use a water containter...and stick the vacc. line in the container....hold it at 3k...slurp slurp....words damn good..
i dont know why you would have to squirt water down the hose...i use a water containter...and stick the vacc. line in the container....hold it at 3k...slurp slurp....words damn good..
#11
WingmaN
Join Date: Aug 2002
Location: Fort Worth Texas
Posts: 4,324
Likes: 0
Received 0 Likes
on
0 Posts
To get a good de-carbonizing you want to give it a lot for hefty shots than what it will be pulling through vacuum. It will clean it out a lot quicker.
People have ran vacuum water injections on V8's for some time now. These setups usually have a inline valve to adjust the amount of flow.
They seem to be more pain in the *** than they would be worth.
But for anyone that is determined to use that setup I would recommend pulling an old windshield washer fluid bottle from just about anything and rig it up.
One way would be to use the little electric pump already in it and wire it in with a momentary on switch. That way you could deutch it anytime you felt a little perky.
Or you could bypass the pump and setup a pickup tube coming in from the top.
You could wire up the low fluid warning sensor built in most of these bottles.
Just be careful showing it off. If this is your only engine mod it would be a pretty sad display. BTW you need to split into two lines on the setup and get the two lines after the split as close to the same length as possible.
People have ran vacuum water injections on V8's for some time now. These setups usually have a inline valve to adjust the amount of flow.
They seem to be more pain in the *** than they would be worth.
But for anyone that is determined to use that setup I would recommend pulling an old windshield washer fluid bottle from just about anything and rig it up.
One way would be to use the little electric pump already in it and wire it in with a momentary on switch. That way you could deutch it anytime you felt a little perky.
Or you could bypass the pump and setup a pickup tube coming in from the top.
You could wire up the low fluid warning sensor built in most of these bottles.
Just be careful showing it off. If this is your only engine mod it would be a pretty sad display. BTW you need to split into two lines on the setup and get the two lines after the split as close to the same length as possible.
#12
hey, your car is on fire!
iTrader: (4)
Join Date: Sep 2001
Location: Lost Wages NV
Posts: 195
Likes: 0
Received 0 Likes
on
0 Posts
be careful with the vac line in the bottle of water. I did it while holding the RPMs enough to keep it from stalling, and it ended up melting the black plastic lip on the rear bumper, which dripped onto the exhaust, and caught the bumper on fire. not pretty... but my motor was cleaner! If I was you I would do the shots like they are saying.
left a small hole in the bumper, which a friend and I fixed with fiberglass. looks almost new.. just needs to be repainted.
left a small hole in the bumper, which a friend and I fixed with fiberglass. looks almost new.. just needs to be repainted.
#13
Former Rx7 *****
Join Date: Nov 2001
Location: Mississauga
Posts: 4,534
Likes: 0
Received 0 Likes
on
0 Posts
are you guys serious?
water and alchol will clean an engine? i've heard of bottles of stuff that will dissovle the carbon... you run a vac line from the intake to teh bottle which is a aerosol bottle and you rev the engine and release the valve in the aerosol can... this creates a huge plumb of white smoke, but i have yet to find such a product in canada
water and alchol will clean an engine? i've heard of bottles of stuff that will dissovle the carbon... you run a vac line from the intake to teh bottle which is a aerosol bottle and you rev the engine and release the valve in the aerosol can... this creates a huge plumb of white smoke, but i have yet to find such a product in canada
#16
WingmaN
Join Date: Aug 2002
Location: Fort Worth Texas
Posts: 4,324
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Cheers!
are you guys serious?
water and alchol will clean an engine? i've heard of bottles of stuff that will dissovle the carbon... you run a vac line from the intake to teh bottle which is a aerosol bottle and you rev the engine and release the valve in the aerosol can... this creates a huge plumb of white smoke, but i have yet to find such a product in canada
are you guys serious?
water and alchol will clean an engine? i've heard of bottles of stuff that will dissovle the carbon... you run a vac line from the intake to teh bottle which is a aerosol bottle and you rev the engine and release the valve in the aerosol can... this creates a huge plumb of white smoke, but i have yet to find such a product in canada
#20
WingmaN
Join Date: Aug 2002
Location: Fort Worth Texas
Posts: 4,324
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Cheers!
nice!
so do i inject the water spray before the AFM? i would assume it would be bad to the AFM? or does it not matter?
nice!
so do i inject the water spray before the AFM? i would assume it would be bad to the AFM? or does it not matter?
These also come in handy for ATF priming too. I am not sure what the s5, or 3rd gen's look like.
#22
WingmaN
Join Date: Aug 2002
Location: Fort Worth Texas
Posts: 4,324
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Crash
Shouldn't you set you boost controller to zero? Wouldn't the tank of water become pressurized if the turbos started spooling?
Shouldn't you set you boost controller to zero? Wouldn't the tank of water become pressurized if the turbos started spooling?
#23
FC Mobsta
on my s4...i use the vacc. line, on front of dymanic chamber...3rd one down..thise one goes to both rotor housings via lower intake manifold..
that story about the bumper catching on fire is crazy! damn...
just did it today..lol....snapple bottle filled with water...filled it up twice...no melting..shitty man.
that story about the bumper catching on fire is crazy! damn...
just did it today..lol....snapple bottle filled with water...filled it up twice...no melting..shitty man.
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
KAL797
Test Area 51
0
08-11-15 03:47 PM