Slide 1

Colin Gilbert
CEO GLR Injection Technologies

Direct Injection Engine Valve Carbon Cleaning

External Use


Slide 2

Direct Injection Valve Cleaning : Current Situation

We believe the current situation with Direct Injection
Engines reports as follows.
•To our knowledge to date no company has currently
got a solvent cleaning solution suitable for the
successful cleaning of valves in Direct injection
engines.
•The current method of cleaning Valves in Direct
injection Engines requires the removal of the valves
and manual cleaning,
•This method can take up to 27 hours.
External Use


Slide 3

Valve Stem Carbon Build up : Current Solution

GLR Injection Technologies have developed a family of
solvents that has proven to successfully remove the build up
of oil carbon from valves in Direct Injection Engines.
When the GLR method of application is followed using their
proven family of solvents the following outcomes can be
expected.
• Removal of oil carbon from the Valve stem and back of the
valve.
• Injectors cleaned back to new spec with the removal of
gums and varnishes that effect the spray pattern of the
injectors
•This process in most cases can be achieved in 2 hours.
External Use


Slide 4

Before DI cleaner application

External Use


Slide 5

Before DI cleaner application

External Use


Slide 6

After DI Cleaner Application

External Use


Slide 7

Before and after DI cleaner application

External Use


Slide 8

.

Valve Stem Carbon Build Up : Suggested Alternative solution - Findings

The problem we believe is caused by oil leaking down the valve stem seal / guide, then "coking"
on the back of the valve and valve stem.
The two challenges faced to remove the coking are
•Selecting the right family of solvents
•Applying the correct method of applying the solvents.
After 3 attempts GLR have demonstrated that they have found the right family of solvents and
have been successful in the method of application
•We suggest that the problem can be resolved by using the method GLR has pioneered on the
third attempt. At 15,000 kms all that would be required is 20 minutes of soaking and compressed
air. At 30,000 kms it will require 30 to 40 minutes soaking, for the vehicles over 60,000 kms 60
minutes soaking.
•We would recommend at the 30,000 km service the coke build-up would justify the process be
used ( before it causes drivability problems).
• GLR also recommends that at every 15,000 kms service a can of GLR injector cleaner be added
to the fuel system for two reasons, 1) the obvious, clean the injectors. 2) The turbulence in the
valve housing ( caused by valve overlap) will allow some of the injector cleaner to soften the
coke on the back of the valve and valve stem.

External Use


Slide 9

Conclusion : Suggested Application

Remove the manifold and soak the valves with the GLR Valve cleaning solvent.
•At 15,000 kms soak for 20 minutes and then blow of the solvent with compressed
air using the tool supplied.

• At 30,000 kms soak for 40 minutes then remove as above.
•Over 60,000 kms soak for 60 minutes and remove as above.
Note : To supplement this process GLR recommends that a 350ml can of Petrol
injector cleaner be added to the fuel tank.
Products to be used :
D I Valve Cleaner
DI Cleaner application Tool
GLR Injector Cleaner

External Use


Slide 10

Cost Benefits To Using The GLR Solution

The GLR Solution to direct injection engine valve cleaning has
significant cost advantages over the alternative method of
disassembly , removal and cleaning’
•Average time taken for removal and cleaning 27 hours
•Average cost $3,700.00
Cleaning with the GLR Direct Injection Valve Cleaner and Method of
application
•Average Time taken 2 hours still to refined.
•Average cost inc solvent and labour $300.00

External Use


Slide 11

Contact :

Colin Gilbert
Managing Director GLR Injector Technologies
Contact: 08 9272 7028
mob: 0418955913
Email: [email protected]

External Use