Fuel Injector Cleaning

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

Has anybody anybody had a fuel injector cleaning in which the fluid was placed in the tank and the vacuum hose? Now the car cuts off, stalls before shifting and is still blowing white smoke when warming. The problems resemble a failed O2 meter which is not the case. It was on a computer this morning and it stated there might be a problem with the TPS sensor or Cam Sensor (ouch!). Anybody have a clue?

Post by **PalmerWMD** » Tue Oct 07, 2003 9:58 am

I'll move this to online Mechnic.

Fred..

Post by **elwesso** » Tue Oct 07, 2003 9:58 am

Ive gotten all sorts of crazy codes occasionally when checking codes....... Make sure the connector is tightly fastened to the ECU..... If its not too much trouble, I would leave the ECU out for a while so you can easily check them........

Other than that, Im nto really understanding what your asking.....!

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

PalmerWMD wrote:I'll move this to online Mechnic.

Fred..

Thanks Fred.

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

elwesso wrote:Ive gotten all sorts of crazy codes occasionally when checking codes....... Make sure the connector is tightly fastened to the ECU..... If its not too much trouble, I would leave the ECU out for a while so you can easily check them........

Other than that, Im nto really understanding what your asking.....!

Basically did placing fuel injector cleaner in the vacuum hose create damage i.e. stalling , shut off, eratic idle etc. And in the process were the tps sensor or cam shaft sensor affected as the computer said. It was a small scale comp. and the mechanic said the biggger computer which was being repaired is more accurate.

Post by **DAEDALUS** » Tue Oct 07, 2003 9:58 am

I've done that with SeaFoam. Never poured inject-r-kleen through the intake though. But when I did the seafoam it smoked pretty bad for maybe 5-10 minutes. Have to be careful to not pour so much in that it hydrolocks the engine. How long have you run the car after the treatment?

Post by **elwesso** » Tue Oct 07, 2003 9:58 am

Ive never heard of injector cleaner you can pour through a vacuum line.... Id be interested to hear about this.....

With the seafoam, my smoked for a real long time, maybe 1 start AFTER i did it and ran it WOT to clean it out...

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

DAEDALUS wrote:I've done that with SeaFoam. Never poured inject-r-kleen through the intake though. But when I did the seafoam it smoked pretty bad for maybe 5-10 minutes. Have to be careful to not pour so much in that it hydrolocks the engine. How long have you run the car after the treatment?

Ran it 10 minutes to let all the smoke out. This was their "technique". It would have made more sense to me to put in the fuel line over the vacuum hose.I thought I could burn it off by driving hard. Now I have a black-white smoke intermittently which means I'm probably running rich. Or maybe my injectors were so dirty it killed one of my injectors?! Gonna have to put it on the computer at Infiniti.

Post by **DAEDALUS** » Tue Oct 07, 2003 9:58 am

I would guess your plugs are fouled up.

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

DAEDALUS wrote:I would guess your plugs are fouled up.

Funny I've heard that. What's crazy is that I just changed my )2 meter and the black smoke probably fried them before this incident. Should know in a couple of hours.

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

elwesso wrote:Ive never heard of injector cleaner you can pour through a vacuum line.... Id be interested to hear about this.....

With the seafoam, my smoked for a real long time, maybe 1 start AFTER i did it and ran it WOT to clean it out...

Hey, I just noticed we have the same color.

Post by **Q451990** » Tue Oct 07, 2003 9:58 am

The injector cleaner in the vacuum line isn't cleaning the injectors (not possible) - they were probably trying to clean intake deposits from the valves and plenum. My guess is that they loosened up enough stuff to cause fouling on the plugs. Any of these cleanings should be followed by a blow-the-doors-off high RPM drive to keep the deposits from lodging in the lower intake/valves, etc - instead you want to burn them and send them out of the exhaust.

Heath

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

Q451990 wrote:The injector cleaner in the vacuum line isn't cleaning the injectors (not possible) - they were probably trying to clean intake deposits from the valves and plenum. My guess is that they loosened up enough stuff to cause fouling on the plugs. Any of these cleanings should be followed by a blow-the-doors-off high RPM drive to keep the deposits from lodging in the lower intake/valves, etc - instead you want to burn them and send them out of the exhaust.

Heath

Glad you said that Heath. I talked to a mecahnic outside Infiniti who stated the same thing. The vacuum leads to the intake chamber so it is impossible. If any thing the fuel line return line should have been used. Either way Infiniti cant see me til the 14th. I hate NY! I tried revving like a maniac up and down the highway but it must not have been enough.

Post by **elwesso** » Tue Oct 07, 2003 9:58 am

Do about 10 redliners (1-2 shift, and a 2-3 shift) and let us know if anything comes out, or gets better.......

You should have redlined it IMMEDIATELY after application of seafoam......

And they are right, there isnt any way seafoam and its effects would clog injectors...... Air comes in one valve, and the injector is over another valve.......

We do have the same color, but I bet yours looks nicer (i have some scratches)......

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

elwesso wrote:Do about 10 redliners (1-2 shift, and a 2-3 shift) and let us know if anything comes out, or gets better.......

You should have redlined it IMMEDIATELY after application of seafoam......

And they are right, there isnt any way seafoam and its effects would clog injectors...... Air comes in one valve, and the injector is over another valve.......

We do have the same color, but I bet yours looks nicer (i have some scratches)......

Damn! Redliners huh? I never used Seafoam before. Has anybody tried placing that in your vacuum hose? In NYC it's hard to keep your bumpers and not get dings. It's pretty cool though. It's posted in rides. Hopefully. Thanks wes.

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

Wrong question! I meant to ask if you've used anything besides seafoam.

Post by **elwesso** » Tue Oct 07, 2003 9:58 am

Next time I do it, Im gonna use TOP ENGINE CLEANER by GM..... You can get it at any GM dealer, and it is specifically designed to decarb and clean the intake, rather than a realy multi purpose cleaner.......

Post by **elwesso** » Tue Oct 07, 2003 9:58 am

BTW..... How did you get it in there if you didnt put it in the vacuum line (brake booster line being the easiest)

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

elwesso wrote:BTW..... How did you get it in there if you didnt put it in the vacuum line (brake booster line being the easiest)

My fault, let me be clearer. They took off the vacuum hose (brake booster line)and put some fuel injection cleaner in there. I had a smell in the car that resembled burning deposits. However, scrap that I owe you a six pack. I dont know why I didn't redline earlier. I started in first-second to third and what a difference. 1st gear alone shot out a long trail of white smoke. I did this a few times. The car no longer shuts off at idle or after a full stop. I wasn't getting the full results but not dropping the gears. Still I need to check it on the computer because my check engine light has been coming on intermittenly. Don't know what the hell that is about. I noticed this for a brief second right before this incident so we'll have to see. Maybe plugs are fouled up from that air meter problem I had this summer. Good looking Wes.

Post by **elwesso** » Tue Oct 07, 2003 9:58 am

YOU used fuel injector cleaner through the intake?? You should only use the product the way its designed...... They probably have different formulations to get rid of carbon, rather than to get rid of injector deposits.......

Just keep the RPMs up....... Gas mileage will suffer, but whats a few extra 5mpg in an already bad Q.....?

My guess on the check engine light is gonna say injector leak, which means it reads that its running too right, which leads me to believe some of the deposits havent quite gotten out.......

LONG LIVE THE BURGUNDY BERRY Qs!!!

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

elwesso wrote:YOU used fuel injector cleaner through the intake?? You should only use the product the way its designed...... They probably have different formulations to get rid of carbon, rather than to get rid of injector deposits.......

Just keep the RPMs up....... Gas mileage will suffer, but whats a few extra 5mpg in an already bad Q.....?

My guess on the check engine light is gonna say injector leak, which means it reads that its running too right, which leads me to believe some of the deposits havent quite gotten out.......

LONG LIVE THE BURGUNDY BERRY Qs!!!

I know, I know. They did this before I knew what was going on. Infiniti seemed to co-sign this too. It's started to stall and cut off when I stop and I smeel the burning desposits in the cabin sometimes. It's going to Infiniti today to go on the computer. I could get a computer reading cheaper than the dealer but I figure in this case it's safer to go with the real deal.

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

Long live the Burgundy Berry Q's!:ylsuper

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

My brother told me that the computer report say it may be a knock sensor, air pump, or the electrical wiring under the air pump($800)! This doesn't sound like an knock sensor problem however air sensors sound more reasonable. Don't know where to go from here but Infiniti sure ain't doing it. That shop that did the service is gonna pay for this one no matter who does it. Does this analysis from Infiniti sound reasonable?

Post by **Q451990** » Tue Oct 07, 2003 9:58 am

What's an air pump?

Heath

Post by **elwesso** » Tue Oct 07, 2003 9:58 am

a supercharger!!!!!

I think he's referring to the IAC.......

Man OLU, i wish you could come down for the oct 18 indy meet.......!

So its still cutting out on you somewhat.......? If you have an intermittant CEL, and its the MAF, the engine shouldnt go above 2000 RPM.....

Post by **Q451990** » Tue Oct 07, 2003 9:58 am

If it is the IAC (or AAC valve) I'd sure be surprised - never heard of a failure before - but they do get dirty.

Heath

Post by **elwesso** » Tue Oct 07, 2003 9:58 am

As would I..... That doesnt seem like a component that would fail......!

Post by **Q45tech** » Tue Oct 07, 2003 9:58 am

The IAC gets carboned up and sticks. If normal idle [rpm] is not found with 2.5-3 turns off the bottom [IAC manual air bypass screw] then either the TB or IAC is dirty or both.

Simple test.

Post by **OLU40** » Tue Oct 07, 2003 9:58 am

elwesso wrote:a supercharger!!!!!

I think he's referring to the IAC.......

Man OLU, i wish you could come down for the oct 18 indy meet.......!

So its still cutting out on you somewhat.......? If you have an intermittant CEL, and its the MAF, the engine shouldnt go above 2000 RPM.....

I wish I could too. I have the stats from Infiniti whatever they mean.DTC RESULTS TIMEKNOCK SENSOR 0INJECTOR LEAKS 25

DATA MONITOR

CMPS-RPM(POS) 913 RPMCMPS-RPM(REF) 909 RPMMAS AIR/FL SE 1.49 COOLANT TEMP/S 176 FO2S1 0.91 VO2S1 (B2) 0.91 VM/R F/C MNT RICHM/R F/C MNT RICHVHCL SPEED SE 0MPH

NISSAN CONSUT-II (ENGINE) PWR BALANCE DIAG RESULT=NG

REFERENCE DATA

No.1 -43RPMNo.2 -8RPMNo.3 34RPMNo.4 -1RPMNo.5 52RPMNo.6 74RPMNo.7 62RPMNo.8 18RPM

BASE DATA

CMPS-RPM(POS) 1271RPMCOOLANT TEMP/S 179 FIACV-AAC/VDIAG RESULT OK

REFERENCE DATA AAC/V OPEN0% 840RPM20% 846RPM80% 1504RPM

IDLE SPEED DATA

CMPS-RPM(POS) 840RPM

Supposedly I need an new air meter(which I just bought in July brand new), knock sensors, water pump (inflating my price) etc. Just yesterday I started having symptoms of a bad air flow meter(black smoke, shutting off, desposit smell in cabin) so maybe it is possible the fluid in the vacuum is throwing the air meter's voltage off. A nother mechanic told me this as well as that the O2 sensors could be fouled up which would give a bad reading to the ecu which wouldn't tell if the car was running rich or not. As a result it is throwing the air meter off. Makes sense. Or the knock sensors (according to this private mechanic) or out of whack picking up every vibration from the engine causing irregular actions from the system (irregular rpm etc). Bottom line too me, it sound as if the asenine procedure by Quik Lube caused a fault in the O2 meter. Hence, the black smoke, lurching, cutting off, etc. or the O2 sensors could be sending a bad reading. I used two other computer readings. One read no codes, another guy said the cam sensors and TPS was showing up. Infiniti didn't show that. I'm gonna get another reading today from an independent who will also check the voltage on the )02 meter and other sensors for at least an hour. He says sometime people run a computer for just a few minutes which is not good enough because a code may not show up right away. Am I screwed or is it seem like a reasonable fix. My O2 meter is still under warranty. Anything else I'm charging the wannabe mechanics! Oh yeah and tech he mentioned the IAC may be dirty, so we'll see.

Post by **Q45tech** » Tue Oct 07, 2003 9:58 am

No.1 -43RPM??????????? Dirty injNo.2 -8RPM***********severe dead No.3 34RPM???????????? Dirty injNo.4 -1RPM************severe deadNo.5 52RPM OKNo.6 74RPM OK.......................74 minus 25=50 minimumNo.7 62RPM OKNo.8 18RPM***************bad dirty inj

All power balance readings should be no more than say 12-25 rpm variance..............perfect readings would all be +- 12 rpmKNOCK SENSOR 0 {FAILED TEST ZERO CRANKS AGO}INJECTOR LEAKS 25 {FAILED TEST 25 Cranks ago

CMPS-RPM(POS) 913 RPM *********RPM out of spec 750 rpmCMPS-RPM(REF) 909 RPMMAS AIR/FL SE 1.49 *********at 750 rpm expect 1.2-1.24 volts

Some dead injectors or fouled plugs [ignition coils] #2  dirty injector #8.

AAC/V OPEN0% 840RPM should be 550-625 rpm or so [with 20% 846RPM should be 700-750 rpm80% 1504RPM ok probably 100 rpm too high.

Shows that somebody misadjusted the air bypass screw and the unit is dirty [TB/pcv hoses/valve].

Fuel Injector Cleaning

Fuel Injector Cleaning

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