I've been having a recurring problem with stunbling and hesitation. I got a throttle body service done and the 8 came back to life to the point of being frighteningly fast...for about 3 hours,the problem appears to have something to do with oil vapors within the PCV circuit gumming up the intake throttle plates. Anbody familiar with this symptom who has narrowed down the cause. I thought it was due to timing chain or sticking valves but as soon as the plates and TB are cleaned out, then it returns to that fierce fighting kick *** car I've been used to.
Throttle body service
- Thread starter vanity6
- Start date
RE: Throttle body service
Interesting. Isn't the throttle body supposedly coated with something to retard deposits? What brand of service and what is the cost? I've been thinking of some services offered by:
http://www.bgprod.com/bgconsumer/bgservices/services.html
I'm thinking brake flush, power streering, fuel/air and EGR. Any opinions?
Interesting. Isn't the throttle body supposedly coated with something to retard deposits? What brand of service and what is the cost? I've been thinking of some services offered by:
http://www.bgprod.com/bgconsumer/bgservices/services.html
I'm thinking brake flush, power streering, fuel/air and EGR. Any opinions?
RE: Throttle body service
The egr gums up the throttle body. When my car got the egr trouble code, the dealer cleaned the throttle body and replaced the egr flow sensor to fix the problem.
Roadie
95 Champagne Mark VIII
00 Ford F150 Supercab 4x4
02 Mazda Protege
86 Chevy Monte Carlo SS
81 Honda CB900C
The egr gums up the throttle body. When my car got the egr trouble code, the dealer cleaned the throttle body and replaced the egr flow sensor to fix the problem.
Roadie
95 Champagne Mark VIII
00 Ford F150 Supercab 4x4
02 Mazda Protege
86 Chevy Monte Carlo SS
81 Honda CB900C
sleeper
Former LOD President
RE: Throttle body service
When i had my intake off, i noticed that the valves were gummed up pretty good with some black stuff. Some cylinders were worse than others. I didn't do anything about it because i didn't know what to clean it up with, and i didn't want anything bad dropping in the motor. I've been wondering what i can spray in the intake to loosen up the deposits so they can get sucked in and burned. Maybe alcohol or water.
When i had my intake off, i noticed that the valves were gummed up pretty good with some black stuff. Some cylinders were worse than others. I didn't do anything about it because i didn't know what to clean it up with, and i didn't want anything bad dropping in the motor. I've been wondering what i can spray in the intake to loosen up the deposits so they can get sucked in and burned. Maybe alcohol or water.
RE: Throttle body service
... Maybe alcohol or water.
[/quote]
That will clean the combustion chambers. Have you seen head/liners/pistons of engines with coolant leaks? No carbon buildup.
EDIT: No, I'm not advocating putting water or any other substance in your engines.
... Maybe alcohol or water.
[/quote]
That will clean the combustion chambers. Have you seen head/liners/pistons of engines with coolant leaks? No carbon buildup.
EDIT: No, I'm not advocating putting water or any other substance in your engines.
sleeper
Former LOD President
RE: Throttle body service
That's what i was thinking. Of course, i'm not going to dump it in there, i'll run the engine until it's warm then just spray a little at a time in through the MAF (being careful not to get it wet) or through a vacuum port. I wonder if there is anything specifically formulated to just be sprayed in the intake air?
That's what i was thinking. Of course, i'm not going to dump it in there, i'll run the engine until it's warm then just spray a little at a time in through the MAF (being careful not to get it wet) or through a vacuum port. I wonder if there is anything specifically formulated to just be sprayed in the intake air?
unstoppable
Registered
RE: Throttle body service
Either brake cleaner or carb cleaner.I like brake cleaner personally.It dries with no residue.I clean all kinds of stuff with it.
Either brake cleaner or carb cleaner.I like brake cleaner personally.It dries with no residue.I clean all kinds of stuff with it.
RE: Throttle body service
Interesting. Isn't the throttle body supposedly coated with something to retard deposits?
[/quote]
Yeah, the guy at the Autozone told me not to use the "Carb Cleaner" that I would want the "Throttle body" cleaner because it would eat that coating off... Also my big can of Gumout says on the back "DO NOT use on fuel injected vehicles!" Any ideas? That BG44K stuff works wonders I tell you. Buddy had an Eldorado that had a Code 80 "Rich Fuel Mixture". Dumped a can ($17) of that in there at 1/4 tank and after 5 miles the light was out and has been out for 2 weeks now.
Interesting. Isn't the throttle body supposedly coated with something to retard deposits?
[/quote]
Yeah, the guy at the Autozone told me not to use the "Carb Cleaner" that I would want the "Throttle body" cleaner because it would eat that coating off... Also my big can of Gumout says on the back "DO NOT use on fuel injected vehicles!" Any ideas? That BG44K stuff works wonders I tell you. Buddy had an Eldorado that had a Code 80 "Rich Fuel Mixture". Dumped a can ($17) of that in there at 1/4 tank and after 5 miles the light was out and has been out for 2 weeks now.
RE: Throttle body service
I haven't seen any on the shelves lately. I haven't looked either, but I have bought many times the fuel injector cleaner that states on the bottle to use ONCE per year. It is supposed to clean the valves. The stuff I have used in the past was Chevron or Valvoline brand and it costs around $10. I usually use it once a yr. and there is a noticeabe improvement in performance.
Roadie
95 Champagne Mark VIII
00 Ford F150 Supercab 4x4
02 Mazda Protege
86 Chevy Monte Carlo SS
81 Honda CB900C
I haven't seen any on the shelves lately. I haven't looked either, but I have bought many times the fuel injector cleaner that states on the bottle to use ONCE per year. It is supposed to clean the valves. The stuff I have used in the past was Chevron or Valvoline brand and it costs around $10. I usually use it once a yr. and there is a noticeabe improvement in performance.
Roadie
95 Champagne Mark VIII
00 Ford F150 Supercab 4x4
02 Mazda Protege
86 Chevy Monte Carlo SS
81 Honda CB900C
RE: Throttle body service
I've read that the seafoam works wonders. You can put some on your tank and also take a vacuum hose and have it suck some out of the bottle while the engine is running. Supposed to work really well, haven't don't it myself but I've read it's good stuff. Anyone use this before?
I've read that the seafoam works wonders. You can put some on your tank and also take a vacuum hose and have it suck some out of the bottle while the engine is running. Supposed to work really well, haven't don't it myself but I've read it's good stuff. Anyone use this before?
RE: Throttle body service
I believe Ford now sells a water based cleaner kit that is safe for their throttle bodes with coatings and the upper intake. If you use a hard solvent like carb cleaner and or a brush you will remove the coating, and that will require more frequent cleanings.
I believe Ford now sells a water based cleaner kit that is safe for their throttle bodes with coatings and the upper intake. If you use a hard solvent like carb cleaner and or a brush you will remove the coating, and that will require more frequent cleanings.
RE: Throttle body service
I read BG products BG44K is like "magic" in a can. It had better be though because a can of it is $16.95 locally, and its really hard to find. Its usually only available from the dealer its so strong. Just do a google search for BG44K and theres nothing but praise. I plan on trying some when I get paid. Would be nice to find a GOOD spray to put through the intake though to kill those valve deposits. I also remember hearing about a pressurized cleaner (3M) that attaches to the fuel rail but haven't seen one for sale before.
I read BG products BG44K is like "magic" in a can. It had better be though because a can of it is $16.95 locally, and its really hard to find. Its usually only available from the dealer its so strong. Just do a google search for BG44K and theres nothing but praise. I plan on trying some when I get paid. Would be nice to find a GOOD spray to put through the intake though to kill those valve deposits. I also remember hearing about a pressurized cleaner (3M) that attaches to the fuel rail but haven't seen one for sale before.
RE: Throttle body service
Done by someone at Pep Boys, someone I met while an empoyee there. After complaining about hesitation and stumbling, he asked if I'd ever had a throttle body service done, I mentioned to him how it was I had done it myself, he looked inside, dug his finger inside and was still able to pull out some gunk and oily deposits, according to him I'd not done a through enough job. The deposits were lodged down in the throat, beyond the throttle plates. He used carb cleaner and and dumped some throughout the air intake and for about 2-3 hours I'd gotten my car back to running like I first remembered, incredibly fast, trans shifting at the proper point, only it didn't last more than 3hours, but even for that minimal ammount of time, to have the MK8 responding like normal helped me to allay any fears of any more serious problems such as the timing chain or the valves getting stuck. This individual also made some seemingly mystikal statement regarding the adjustment of the individual injectors, shifting them back and forth until you hear them or feel them click.Never heard of that possible BS before, however this individual is surely on to something, the MK8 is giving me reason to keep the faith that whatever is going wrong, will soon be found out.I can only guesstimate from studies in Autotech that the problem may be narrowed down to a unsealed circuit within the PCV. The studies indicate any leakage of air or excess air being introduced into the system via of a leak such in the valve covers can cause an erratic response in driveabilty quality. Theres a leak in my spark plug gasket thats allowing oil spillage to occur on the plug. That leak tranmits to an opening or a possible source of a vacuum leak. For the PCV system to operate effectively, that system must be closed to any outside air getting in. Its when this tech shows me there is no evidence of oil being burned when looking into the left valve cover where the PCV valve goes, then the service is completed. the 4.6 six has a completely different personality when the service has been completed.Upon racing the engine from WOT, the engine takes its time returning to standard idle as opposed to a quicker return to idle before the service. We had a gentlemens agreement of 40$ for the service. It was privately done, not in a shop. When we figure out what the answer is I'll report back. There seems to be a common problem with these vehicles and hope to help anyone else when we narrow down the problem.
Done by someone at Pep Boys, someone I met while an empoyee there. After complaining about hesitation and stumbling, he asked if I'd ever had a throttle body service done, I mentioned to him how it was I had done it myself, he looked inside, dug his finger inside and was still able to pull out some gunk and oily deposits, according to him I'd not done a through enough job. The deposits were lodged down in the throat, beyond the throttle plates. He used carb cleaner and and dumped some throughout the air intake and for about 2-3 hours I'd gotten my car back to running like I first remembered, incredibly fast, trans shifting at the proper point, only it didn't last more than 3hours, but even for that minimal ammount of time, to have the MK8 responding like normal helped me to allay any fears of any more serious problems such as the timing chain or the valves getting stuck. This individual also made some seemingly mystikal statement regarding the adjustment of the individual injectors, shifting them back and forth until you hear them or feel them click.Never heard of that possible BS before, however this individual is surely on to something, the MK8 is giving me reason to keep the faith that whatever is going wrong, will soon be found out.I can only guesstimate from studies in Autotech that the problem may be narrowed down to a unsealed circuit within the PCV. The studies indicate any leakage of air or excess air being introduced into the system via of a leak such in the valve covers can cause an erratic response in driveabilty quality. Theres a leak in my spark plug gasket thats allowing oil spillage to occur on the plug. That leak tranmits to an opening or a possible source of a vacuum leak. For the PCV system to operate effectively, that system must be closed to any outside air getting in. Its when this tech shows me there is no evidence of oil being burned when looking into the left valve cover where the PCV valve goes, then the service is completed. the 4.6 six has a completely different personality when the service has been completed.Upon racing the engine from WOT, the engine takes its time returning to standard idle as opposed to a quicker return to idle before the service. We had a gentlemens agreement of 40$ for the service. It was privately done, not in a shop. When we figure out what the answer is I'll report back. There seems to be a common problem with these vehicles and hope to help anyone else when we narrow down the problem.
RE: Throttle body service
Whatever you may do, don,t do what's described as a run-rite system service by Pep Boys. Its the reason I'm the owner of my first MK8 now. The service consist of disabling the the fuel pump, tying a bottle of mystery fluid into the intake vacuum port. Starting fluid is used to restart engine while FP remains disabled, the engine is then fed through an IV like setup the mystery fluid, on a constant slow flow introduced into the intake through a vacuum pull, is what the engine is now running on. Cleaning the system while running, it may run for upto 40 minutes. The problem exist because this fluid raises the engine temperature to such an un-healthy degree that major stress may occur as a result. Especially if your vehicle is a high mileage one.I had a 96 Mercury Sable that I wanted the service performed on. As an experiment mostly. I was an employee at the time. We did a reading of engine vacuum it read between 16 and 17 inches of mercury before the test, after the service an increase of almost 20 inches of mercury. It cleaned the innerds real well but the stress factor of the cleaning within 2 weeks completely destroyed the engine. Causing a main journal bearing to be thrown. It was like nothing I'd ever experienced before. After doing about 90 MPH on the expressway, I saw the oil light do a constant and the check engine light which had been on perpetually begin to flash off and on consistently. Searching for any evidence of oil leakage I found none. There had been major internal damage only to be rectified by replacing the engine,which has yet to be handled.
Borg/Warner has a treatment that runs through the fuel system, I know because it was PBY's competition and during our training session they tried to get us to see the benifit of theirs over B&W's. These services are done by PBY's staff exclusively and some (mechanics) who are in a hurry who rush to grab another job often do the service improperly anyway by not allowing a slow but fast process, causing a hellacious smokescreen emit out of your tailpipe and the smell arrghhh...
Whatever you may do, don,t do what's described as a run-rite system service by Pep Boys. Its the reason I'm the owner of my first MK8 now. The service consist of disabling the the fuel pump, tying a bottle of mystery fluid into the intake vacuum port. Starting fluid is used to restart engine while FP remains disabled, the engine is then fed through an IV like setup the mystery fluid, on a constant slow flow introduced into the intake through a vacuum pull, is what the engine is now running on. Cleaning the system while running, it may run for upto 40 minutes. The problem exist because this fluid raises the engine temperature to such an un-healthy degree that major stress may occur as a result. Especially if your vehicle is a high mileage one.I had a 96 Mercury Sable that I wanted the service performed on. As an experiment mostly. I was an employee at the time. We did a reading of engine vacuum it read between 16 and 17 inches of mercury before the test, after the service an increase of almost 20 inches of mercury. It cleaned the innerds real well but the stress factor of the cleaning within 2 weeks completely destroyed the engine. Causing a main journal bearing to be thrown. It was like nothing I'd ever experienced before. After doing about 90 MPH on the expressway, I saw the oil light do a constant and the check engine light which had been on perpetually begin to flash off and on consistently. Searching for any evidence of oil leakage I found none. There had been major internal damage only to be rectified by replacing the engine,which has yet to be handled.
Borg/Warner has a treatment that runs through the fuel system, I know because it was PBY's competition and during our training session they tried to get us to see the benifit of theirs over B&W's. These services are done by PBY's staff exclusively and some (mechanics) who are in a hurry who rush to grab another job often do the service improperly anyway by not allowing a slow but fast process, causing a hellacious smokescreen emit out of your tailpipe and the smell arrghhh...
RE: Throttle body service
Correct, the fuel system is not a part of the service. Once the fuel system is disabled via way of removing a fuse, the engine is then purged of any additional fuel . Once theres no longer any fuel in the system rails and all other related components, the engine dies. Starting fluid is now introduced into the system through the throttle body, and they dump quite a bit in, we hit the starter. Although having disabled the fuel system, its still able to generate spark. Upon starting the engine its now running on starting fluid alone. Then the feed bottle is introduced into the system while the engine is running off the starting fluid. By having a line of vacuum pulling the mystery fluid into the intake,through a fitted hose, the fuel system is being completely bypassed, and the only element continuing to run your vehicles' engine is the mystery fluid.Its fed on a drip line you're able to view. Its almost like someone in a hospital getting an IV.
Correct, the fuel system is not a part of the service. Once the fuel system is disabled via way of removing a fuse, the engine is then purged of any additional fuel . Once theres no longer any fuel in the system rails and all other related components, the engine dies. Starting fluid is now introduced into the system through the throttle body, and they dump quite a bit in, we hit the starter. Although having disabled the fuel system, its still able to generate spark. Upon starting the engine its now running on starting fluid alone. Then the feed bottle is introduced into the system while the engine is running off the starting fluid. By having a line of vacuum pulling the mystery fluid into the intake,through a fitted hose, the fuel system is being completely bypassed, and the only element continuing to run your vehicles' engine is the mystery fluid.Its fed on a drip line you're able to view. Its almost like someone in a hospital getting an IV.
RE: Throttle body service
You know, now that you mention it I'm not sure, but first thing tomorrow I'm going to count them ,They do like a vortex swirll and everyone else who owns MK8s with the traditional aluminum rims always envy them not being on their MK8s.I do know they are directional because to transfer from one side to the other causes the pattern to be opposite .
You know, now that you mention it I'm not sure, but first thing tomorrow I'm going to count them ,They do like a vortex swirll and everyone else who owns MK8s with the traditional aluminum rims always envy them not being on their MK8s.I do know they are directional because to transfer from one side to the other causes the pattern to be opposite .