Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

Reply
 
LinkBack Thread Tools Display Modes
Old 06-10-2019, 05:07 PM   #1
Registered User
 
Join Date: Sep 2018
Location: Wyoming
Posts: 20
Garage
Chevron Techron

Since in frequent several forums and FB pages, I'm not sure where I read a suggestion for Techron for cleaning injectors. I purchased my '99 late last summer, and trying to rev it, found it falling on it's face about 5200 rpm. I put the bottle of Techron in, filled the tank and started driving. I haven't pushed it until today and ...it ran right on up to redline, no problem. I'm generally pretty skeptical about fixes in a bottle, but this one seems to work. Even more amaingly, I've only run it down to just under three-quarters of a tank. So, going forward, I suppose I'll be making an occasional habit of putting in a can.
__________________
A cynic is a man who, when he smells flowers, looks around for a coffin.
-H. L. Mencken
Newsguy is offline   Reply With Quote
Old 06-10-2019, 06:21 PM   #2
Registered User
 
BYprodriver's Avatar
 
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,148
Garage
Two different E.P.A certification engineers told me to put nothing but Chevron supreme fuel in the new cars we built at Shelby American & Saleen Mustang. 1999 Shelby Series 1 & 1994 Saleen SR351. I have never had a fuel problem since then & no need to use additives.
__________________
2000 S Speed YellowLN 3.6L cylinders & pistons, triple row IMSB upgrade, R&R connecting rods, billet tensioner paddle,oilpump driveshaft.Heads rebuilt by F6I with new valves & springs.Cayman airbox & MAF housing, 996 intake plenum & 75mm T/B. NHP sport converters &Dansk muffler
BYprodriver is offline   Reply With Quote
Old 06-10-2019, 07:18 PM   #3
Registered User
 
Join Date: Sep 2018
Location: Wyoming
Posts: 20
Garage
Quote:
Originally Posted by BYprodriver View Post
Two different E.P.A certification engineers told me to put nothing but Chevron supreme fuel in the new cars we built at Shelby American & Saleen Mustang. 1999 Shelby Series 1 & 1994 Saleen SR351. I have never had a fuel problem since then & no need to use additives.
Unfortunately, that is not an option here. I do stick with Tier 1 fuels though, Shell or Sinclair. The Sinclair is at least ethanol-free!
Newsguy is offline   Reply With Quote
Old 06-10-2019, 07:54 PM   #4
Need For Speed
 
KRAM36's Avatar
 
Join Date: Feb 2013
Location: Funville
Posts: 2,058
Garage
Quote:
Originally Posted by Newsguy View Post
Unfortunately, that is not an option here. I do stick with Tier 1 fuels though, Shell or Sinclair. The Sinclair is at least ethanol-free!
Same here, no Chevron or Texaco gas stations near me. I do the same thing as you, I get ethanol-free gas from Quick Trip.
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
KRAM36 is online now   Reply With Quote
Old 06-10-2019, 08:41 PM   #5
Certified Boxster Addict
 
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,366
If the injectors were performing so poorly that the engine fell flat at 5200 rpm, then they are still performing poorly. The techron might have unplugged them a bit but you can be sure that they still drip, have poor spray patterns, and are out of calibration.

The fix in a bottle might help the situation but it doesn't fix the problem. I'd really recommend pulling the injectors and having them cleaned and calibrated. You'll be truly shocked at how much better an engine runs after having this done.

And if you haven't replaced the fuel filter in awhile, I'd do that too. You'd be amazed at how dirty even good gas is these days: Don't Forget to Replace the Fuel Filter

Here is the report on my fuel injectors that I recently had cleaned/calibrated. The engine ran fine but seemed just a little low on power.

__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor

Last edited by thstone; 06-11-2019 at 02:53 PM.
thstone is offline   Reply With Quote
Old 06-10-2019, 09:02 PM   #6
Need For Speed
 
KRAM36's Avatar
 
Join Date: Feb 2013
Location: Funville
Posts: 2,058
Garage
Tom, what do they charge to do the cleaning and calibration?
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
KRAM36 is online now   Reply With Quote
Old 06-11-2019, 04:32 AM   #7
Registered User
 
Join Date: Dec 2016
Location: Clifton, NJ
Posts: 715
between $10 and $25 per injector depending on level of service and where you go
Quadcammer is offline   Reply With Quote
Old 06-11-2019, 07:32 AM   #8
Registered User
 
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,213
Quote:
Originally Posted by thstone View Post
You'll be truly shocked at how much better an engine runs after having this done.
+ 1 on RC

Yes, the difference is amazing (very smooth running engine), also RC Engineering has great service as their turn around time is usually 24 hrs, last time I paid about $25 per injector.
.
Gilles is offline   Reply With Quote
Old 06-11-2019, 10:23 AM   #9
Registered User
 
BYprodriver's Avatar
 
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,148
Garage
Quote:
Originally Posted by Gilles View Post
+ 1 on RC

Yes, the difference is amazing (very smooth running engine), also RC Engineering has great service as their turn around time is usually 24 hrs, last time I paid about $25 per injector.
.
Yes I have taken 3 sets there, amazed at how smooth the idle is after cleaning
__________________
2000 S Speed YellowLN 3.6L cylinders & pistons, triple row IMSB upgrade, R&R connecting rods, billet tensioner paddle,oilpump driveshaft.Heads rebuilt by F6I with new valves & springs.Cayman airbox & MAF housing, 996 intake plenum & 75mm T/B. NHP sport converters &Dansk muffler
BYprodriver is offline   Reply With Quote
Old 06-11-2019, 11:25 AM   #10
Need For Speed
 
KRAM36's Avatar
 
Join Date: Feb 2013
Location: Funville
Posts: 2,058
Garage
Hum, have a company that sells remanufactured OE Bosch injectors with a 276cc flow rate and $56.58 shipped for all 6 injectors.
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
KRAM36 is online now   Reply With Quote
Old 06-11-2019, 12:53 PM   #11
Racer Boy
 
Racer Boy's Avatar
 
Join Date: Sep 2015
Location: Seattle, WA
Posts: 586
That seems too good to be true.
Racer Boy is offline   Reply With Quote
Old 06-11-2019, 01:23 PM   #12
Need For Speed
 
KRAM36's Avatar
 
Join Date: Feb 2013
Location: Funville
Posts: 2,058
Garage
Quote:
Originally Posted by Racer Boy View Post
That seems too good to be true.


https://www.ebay.com/itm/254017616708
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
KRAM36 is online now   Reply With Quote
Old 06-11-2019, 02:51 PM   #13
Certified Boxster Addict
 
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,366
Quote:
Originally Posted by KRAM36 View Post
Hmm. They seem curiously inexpensive.

The posting says, "Re-manufactured.We remove all part number message of eBay policy.".

All OE injectors have PNs on them. I'm guessing that they don't have any part numbers because they are knock-offs (eBay won't allow real PNs on non-OE parts).

Here is what my OE injectors looked like with the PN's clearly visible:

__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor

Last edited by thstone; 06-11-2019 at 02:55 PM.
thstone is offline   Reply With Quote
Old 06-11-2019, 03:42 PM   #14
Need For Speed
 
KRAM36's Avatar
 
Join Date: Feb 2013
Location: Funville
Posts: 2,058
Garage
So what would be the downside of buying these?
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
KRAM36 is online now   Reply With Quote
Old 06-11-2019, 04:37 PM   #15
1998 Boxster Silver/Red
 
Join Date: Sep 2017
Location: 92262
Posts: 897
Quote:
Originally Posted by KRAM36 View Post
So what would be the downside of buying these?
Having to replace second-rate parts for OEM.

Buy cheap, buy twice.
__________________
1998 Porsche Boxster
1986 BMW 325es
2012 Ford Edge Sport

"Ignore the guilt, and take your turn"
Starter986 is offline   Reply With Quote
Old 06-11-2019, 05:58 PM   #16
Need For Speed
 
KRAM36's Avatar
 
Join Date: Feb 2013
Location: Funville
Posts: 2,058
Garage
Quote:
Originally Posted by Starter986 View Post
Having to replace second-rate parts for OEM.

Buy cheap, buy twice.
How do we know these injectors are second rate parts?
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
KRAM36 is online now   Reply With Quote
Old 06-12-2019, 06:41 AM   #17
Racer Boy
 
Racer Boy's Avatar
 
Join Date: Sep 2015
Location: Seattle, WA
Posts: 586
We don’t know, but they are so inexpensive as to be suspicious.

Why don’t you buy a set and give them a try?
Racer Boy is offline   Reply With Quote
Old 06-12-2019, 10:22 AM   #18
Need For Speed
 
KRAM36's Avatar
 
Join Date: Feb 2013
Location: Funville
Posts: 2,058
Garage
Quote:
Originally Posted by Racer Boy View Post
We donít know, but they are so inexpensive as to be suspicious.

Why donít you buy a set and give them a try?
I don't have an issue with my injectors, car idles and runs fine. If I did buy them and said my car ran better, you all would accuse me of having a placebo effect.

How about you buy them and let us know, since all my experiences are placebo?
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
KRAM36 is online now   Reply With Quote
Old 06-12-2019, 11:49 AM   #19
Registered User
 
Join Date: Sep 2018
Location: Wyoming
Posts: 20
Garage
I did indeed change the fuel filter, and spark plugs as well.
Now since it only has 56k on it, do you really think the injectors need rebuilding?
Newsguy is offline   Reply With Quote
Old 06-12-2019, 12:25 PM   #20
Registered User
 
Join Date: Aug 2018
Location: Woodland Wa
Posts: 42
Quote:
Originally Posted by Newsguy View Post
I did indeed change the fuel filter, and spark plugs as well.
Now since it only has 56k on it, do you really think the injectors need rebuilding?
If you used Techron ,changed fuel filter,and plugs all at the same time there is no way of telling which of the three (or combination of) fixed the problem.
Now a reason your injectors "MAY" need cleaned: Is the low miles and a 99.
It has sat for long periods of time so your injectors "MAY" be a little gummed up from setting.
But it could have been a Dirty fuel filter and your injectors are fine
blue62 is online now   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 07:15 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page