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Crazy results after injector cleaning

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#1
socalaviator

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While my car was down for some trans repairs and upgrades we decided to turn up my HKS GT1000 turbos to their full potential by upgrading my OEM fuel rails and fpr to an aftermarket choice.

It was decided it was a good idea to send out my injectors for cleaning to RC Engineering in Torrance,CA as I had struggled with a small idle issue and noticed some increasin short term fuel trims at WOT.
Well...the results PRE-cleaning were quite dramatic.

Only 2 injectors were anywhere near the required 1700cc flow and one was as bad as 600cc !!! Yikes.
Luckily I never encountered knock or any other scary symptoms. I did have many fail safes running in case things got bad.

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Edited by socalaviator, 20 March 2019 - 05:54 AM.

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RD Engineering. HKS GT1000 build.

#2
Tim

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Wow this makes a lot of sense in what your problems nwere before. Glad you got this straightened out.
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#3
socalaviator

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Wow this makes a lot of sense in what your problems nwere before. Glad you got this straightened out.


Although the car hasn't been officially retuned yet I can only imagine this was the issue.
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RD Engineering. HKS GT1000 build.

#4
Dv8

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I learned to do annual or 6-8 month cleaning of injectors depending on usage and fuel. A while back i used to run into these issues and discussed it with Ronnie too. E85 and blowby is nasty.

 

~Dv8


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 4/28/18 8.81 @163MPH 

Changes Coming| NHRA Licenced GTR 8.5

 

 

 

 

 

 

 

 


#5
socalaviator

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I learned to do annual or 6-8 month cleaning of injectors depending on usage and fuel. A while back i used to run into these issues and discussed it with Ronnie too. E85 and blowby is nasty.
 
~Dv8


Yeah man. I just got off the phone with RC Engineering and they told me no matter how good my filtration is they always see issues with E85-especially when cars sit. My injectors may have been worse than the last time it ran because it did sit without running for about a month.

They mentioned sometimes people install a post filter AFTER the post-filter on E85 applications LOL

I think doing a bi-yearly cleaning/inspection like you do is the safest bet.
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RD Engineering. HKS GT1000 build.

#6
colo_evo

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Yeah man. I just got off the phone with RC Engineering and they told me no matter how good my filtration is they always see issues with E85-especially when cars sit. My injectors may have been worse than the last time it ran because it did sit without running for about a month.

They mentioned sometimes people install a post filter AFTER the post-filter on E85 applications LOL

I think doing a bi-yearly cleaning/inspection like you do is the safest bet.


What part of the country are you in? I'm always reading about people having issues with e85. I've been running e85 full time in my vehicles since 09 and never had an issue. Never cleaned injectors once until recently(and they were fine).

My theory is the hygroscopic properties of ethanol blends don't really have an effect on the fuel up here in Colorado because it's so dry most of the year. I'm guessing you live in a humid area?
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#7
tg07

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Interesting info.


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Alpha 7


#8
Dv8

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Yeah man. I just got off the phone with RC Engineering and they told me no matter how good my filtration is they always see issues with E85-especially when cars sit. My injectors may have been worse than the last time it ran because it did sit without running for about a month.

They mentioned sometimes people install a post filter AFTER the post-filter on E85 applications LOL

I think doing a bi-yearly cleaning/inspection like you do is the safest bet.

 

 

This ID1700's? X? Just had a set cleaned 10 days before yours by RC. Mine were cleaner before, nothing lower than a high 1400, but more or less the same after as yours after, not X model.

 

~Dv8


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 4/28/18 8.81 @163MPH 

Changes Coming| NHRA Licenced GTR 8.5

 

 

 

 

 

 

 

 


#9
socalaviator

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This ID1700's? X? Just had a set cleaned 10 days before yours by RC. Mine were cleaner before, nothing lower than a high 1400, but more or less the same after as yours after, not X model.
 
~Dv8


Mine are ID1700x
RD Engineering. HKS GT1000 build.

#10
5ive

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This stuff is really dangerous, glad you didnt break your engine.


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#11
Dv8

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Mine are ID1700x

 

guess its good to know that the X and non flow the same clean :D

 

~Dv8


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 4/28/18 8.81 @163MPH 

Changes Coming| NHRA Licenced GTR 8.5

 

 

 

 

 

 

 

 


#12
socalaviator

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guess its good to know that the X and non flow the same clean :D
 
~Dv8


Haha. This is a fact
RD Engineering. HKS GT1000 build.

#13
socalaviator

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To top it off. I have a friend with an Alpha 12 build. He goes months (as much as 6 months) between driving it, has never run anything but Pump E85 on his 6 year old ID2000 injectors and has never had an issue.
RD Engineering. HKS GT1000 build.

#14
gtrguyinaz

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To top it off. I have a friend with an Alpha 12 build. He goes months (as much as 6 months) between driving it, has never run anything but Pump E85 on his 6 year old ID2000 injectors and has never had an issue.

Maybe he has never seen an issue because he is unaware ??

I think this is true for most E-85........

 

Next question is does this ever happen to pump 91/93 ......  ??  Maybe


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#15
droptopp

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I just sent my ID 2000’s out a third time. Once as an A9 and before the 4.1 build and now 4.0 build and no issues.

Run exclusively E85 in the North East but winter store on 93.
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GTX3582R built and tuned by STM, AMS 4.1, Omega billet crank, Alpha Cams, STM DP, MP, 4 STM Titanium custom exhaust, STM Race FMIC 22x18x4.5, full 3" piping, ID 2000, Sheptrans OneK drop gears, DS axles, E85, Advan GT 10/12 285/315 R888 / MT ET 18x10/12 TE37 Saga MT ET SS 275/245.
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#16
shawnhayes

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Reason #9,562,361 I never converted to E85 despite the 35 good reasons to do so. 

 

Sorry.

 

Shawn


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#17
Tim

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Reason #9,562,361 I never converted to E85 despite the 35 good reasons to do so.

Sorry.

Shawn



Just a little rant of mine sombody in AMERICA SHOULD NEVER HAVE TO APOLOGIZE FOR THERE OPINION !
My . .02 end

Shaun and I know we’re being polite
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#18
thehelix112

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Sorry you feel that way Tim.

/me ducks

Dave
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#19
Jared@SFS

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Reason #9,562,361 I never converted to E85 despite the 35 good reasons to do so. 

 

Sorry.

 

Shawn

 

Its not the ethanol at its core, its the pump E85. It was deregulated so the base fuel(the other 15%) is bottom of the barrel dirty nasty crap that causes a lot of the black gummy buildups. I've got 2 cars(HUGE sample size I know) that run a mixed Ignite E98 with pump 93 octane and have had zero issues(One GT-R, one Supra).


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#20
Tim

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Sorry you feel that way Tim.

/me ducks

Dave


Dave it’s all good my man. 100%
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