DIESEL COMPRESSION TEST KIT
OWNER'S MANUAL
Stock Number W89731
IMPORTANT SAFETY INSTRUCTIONS,
READ AND UNDERSTAND ALL INSTRUCTIONS
Failure to follow all instructions detailed in this manual may result in
serious personal injury. SAVE THESE INSTRUCTIONS
PRODUCT SPECIFICATIONS
Pressure Scale: 0-1000psi (0-7000 kPa)
Gauge Accuracy: + / - 2 %
Hose Size: 15/64" I.D. x 35/64" O.D. x 16" L
Accessories: Carrying case, 9 adapter congurations
WARNING
1. Check that vehicle battery is fully charged. Set car in neutral or park and set parking brake.
2. Refer to adapter chart for correct engine adapter. Secure assemble as shown in diagram.
3. Start engine and allow to warm up to operating temperature.
4. Once engine is warm, shut off engine and remove fuel shutdown solenoid (refer to vehicles repair
manual for location).
5. Remove all of the glow plugs or injectors depending on adapter being used. Mark injector wires for
ease in reassembly. Label all injectors and glow plugs for reinstallation.
6. Connect compression tester to engine. With accelerator pedal fully depressed, turn engine over for
8 revolutions. CAUTION: Continuing to crank engine for a longer period of time may result in
damage to the starter motor or draining the battery.
7. Read and record compression number displayed on gauge. Press air release button and remove
gauge from engine.
8. Repeat for remaining cylinders.
9. Reinstall injectors or glow plugs and reinstall fuel injection solenoid.
10. Clean tester and store in a cool, dry place out of reach of children.
Note: A good engine will see a quick jump in initial compression gures on the gauge, with a slow rise
to maximum upon the 8th revolution of the motor. A poor engine will see a slow rise in compression
and be below specications in vehicle repair manual. In general, all cylinders should be within 10%
from best to worst cylinder.
1. Do not exceed 1000psi maximum pressure.
2. Wear ANSI approved safety goggles and
protective wear during setup and use.
3. Use tester in well ventilated areas.
4. Before using, set transmission in park (for automatic
transmission) or neutral (for manual transmission) and
set parking brake.
5. Keep out of reach of children.
6. Install and remove tester only while engine is stopped.
7. Keep work area clean and well lit.
8. Dress properly. Do not wear loose clothing or jewelry
as they can be caught in moving engine parts.
Protective clothes and nonskid footwear are
recommended when working. Wear restrictive hair
covering to contain long hair.
9. Do not overreach. Keep proper footing and balance
at all times.
10. Maintain test kit with care. Keep clean for better and
INSTRUCTIONS
safer performance. Inspect hoses periodically, and if
damaged, have them repaired by a qualied technician.
11. Stay alert. Watch what you are doing, use common
sense. Do not operate when you are tired.
12. Check for damaged parts. Before using, any part that
appears damaged should be carefully checked to
determine that it will operate properly and perform
its intended function. Check for alignment and binding
of moving parts; any broken parts or mounting
xtures; and any other condition that may affect
proper operation. Any part that is damaged should be
properly repaired or replaced by a qualied technician.
13. Do not operate if under the inuence of alcohol
or drugs. Read warning labels if taking prescription
medicine to determine if your judgment or reexes are
impaired while taking drugs. If there is any doubt, do
not operate.
14. Do not start an engine in an enclosed area (like a
garage). A running gasoline engine generates carbon
monoxide; carbon monoxide is a colorless, odorless
gas that can cause serious injury and death, if inhaled.
15. Keep hands away from the moving parts and hot
parts of vehicle’s engine.
16. Read and understand all instructions and safety
precautions as outlined in the vehicle manufacturer’s
manual for air condition servicing.
ADAPTERS
Manufacturer
Audi®
Mercedes-Benz®
VW®
Volvo®
BMW®
Chevette®/Isuzu®;
Luv®/Isuzu®
Deutz®
Ford®/Mazda®
Ford®/Mitsubishi®
Ford®/Navistar®
General Motors®
Hummer®
Isuzu®/Isuzu® Truck
Kubota®
Lincoln®, Mark VII/®
Continental®
Mercedes-Benz®
Engine
Early models, see
VW® for TDI
Early models
1970’s Rabbit®
Early models except
30’s & 40’s
2.4L
1.8L, 2.2L
Many models
(1984-87) 2.0L
(1983-84) 2.2L
Escort®, Lynx®,
Ranger®, Tempo®,
Topaz®
(1985-87) Ranger®
2.3L
6.9L and 7.3L (up to
1994)
4.3L V6, 4.3L V8,
5.7L V8
Duramax® 6.6L
Turbo Diesel
Optimizer 6500®
V8 Turbo
(1992-98) 4HE1-TC
(1998-2005) 6HK1-
TC (1998-2005)
4HE1-TC
(Up to 1998) 6HK1-
TC
Some models
2.4L used in 1984-85
autos with Volvo®
engines
(1988-89) 190E 2.5L
(1991-99) E300
2005 E320 CDI
Type
Injector
Injector
Injector
Injector
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Thread
24 x 2.00
24 x 2.00
24 x 2.00
24 x 2.00
12 x 1.25
10 x 1.25
12 x 1.25
10 x 1.25
10 x 1.25
10 x 1.00
10 x 1.00
10 x 1.25
10 x 1.25
10 x 1.25
12 x 1.25
10 x 1.25
12 x 1.25
10 x 1.25
12 x 1.25
12 x 1.25
10 x 1.00
Adapter #
C
C
C
C
H
U
E
H
U
F
F
A
A
E
E
E
H
U
I
U
F
H
F
I
U
H
U
A
U
- Indicates that part
7 must be removed for
these applications.
Mitsubishi®
Mitsubishi-Fuso®
Navistar®/
International®
Nissan®/ UD Truck®
Peugeot®
Toyota®
VW®
2 and 3 cylinder
engines
Medium
6.9L and 7.3L
2.2L
Medium
Most
Certain Models
1.8L
2.2L
(1979-84) Rabbit®
(1979-99) Jetta®
(1981-84) Pick-Up
(1987-99) Golf®
(1992-97) Passat®
(1992-98) Eurovan®
(1995-97) Passat®
(1997-05) Golf®
(1997-05) Jetta® &
Jetta® Wagon
(1998-05)
New Beetle®
2004 Touareg®
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
Glow Plug
10 x 1.25
10 x 1.25
10 x 1.00
10 x 1.25
10 x 1.25
12 x 1.25
18 x 1.50
10 x 1.25
10 x 1.25
12 x 1.25
10 x 1.00
F
F
A
F
F
H
U
H
E
F
H
U
I
U
A
U
- Indicates that part
7 must be removed for
these applications.
Part Description Qty
1 Pressure Gauge 1
2 Air Release Button 1
3 Rubber Hose 1
4 1/8” NPT Quick Coupler 1
5 7/16”-20 (F) Quick Coupler 3
6 M12 x 1.25 (M)-7/16”-20 (M) Adapter 3
7 M12 x 1.25 (F)-M18 x 1.5 (M) Adapter 2
8 M10 x 1.25 Short Adapter 1
9 M10 x 1.25 Long Adapter 1
10 ZG 1/8” (M) Male Quick Coupler 1
11 ZG 1/8” (F)-M24 x 2 (M) Adapter 1
12 Adapter Sleeve 1
13 Quick Connect with Ball Tip 1
14 1/2”-19 Lock Nut 1
15 7/16”-20 (M)-7/16” x 20 (F) 90° Connector 1
16 ZG 1/8” (M)-M24 x 1.5 (M) Adapter 1
17 M10 x 1 (M) Adapter 1
18 Copper Washer 2
PARTS LIST
ASSEMBLY DIAGRAM
Letters designate adapter assemblies
LIMITED WARRANTY
PERFORMANCE TOOL® extends only the following warranties, and only to original retail purchasers.
These warranties give specic legal rights. Except where prohibited by local law, the law of the State
of Washington governs all warranties and all exclusions and limitations of warranties and remedies.
There may be other rights which vary from state to state.
PERFORMANCE TOOL® warrants the product to be free from defects in materials and workmanship
under normal use and service. A defective product may be returned for a free replacement within 90
days from the date of purchase, provided that product is returned to place of purchase immediately
after discovery of defect. After 90 days and up to one year from date of purchase, PERFORMANCE
TOOL® will replace at no charge any parts which our examination shall disclose to be defective
and under warranty. These warranties shall be valid only when a sales receipt showing the date of
purchase accompanies the defective product or defective part (s) being returned. For part (s) after
90 days, please remit your request, postage prepaid to: PERFORMANCE TOOL, P.O. Box 88259
Tukwila, WA 98138
These warranties exclude blades, bits, punches, dies, bulbs, fuses, hoses, and other consumables
which must be replaced under normal use and service. These warranties shall not apply to any
product or part which is used for a purpose for which it is not designed, or which has been repaired
or altered in any way so as to affect adversely its performance or reliability, nor shall these warranties
apply to any product or part which has been subject to misuse, neglect, accident or wear and tear
incident to normal use and service.
PERFORMANCE TOOL® does not authorize any other person to make any warranty or to assume
any liability in connection with its products.
Except for warranties of title and the limited express warranties set forth above, PERFORMANCE
TOOL® makes no express or implied warranties of any kind with respect to its products. In particular,
PERFORMANCE TOOL® makes no implied warranty of merchantability and no implied warranty of
tness for any particular purpose, except that for goods purchased primarily for personal, family or
household use and not for commercial or business use, PERFORMANCE TOOL® makes an implied
warranty of merchantability (and, if otherwise applicable, an implied warranty of tness for a particular
purpose), but only for the particular qualities or characteristics, and for the duration, expressly war-
ranted above.
The laws on limitation of implied warranties may differ from state to state, so the above limitations may
not apply in all cases.
PERFORMANCE TOOL® shall not be liable for consequential, incidental or special damages resulting
from or in any manner related to any product, or to the design, use, or any inability to use the product.
The sole and exclusive remedy for a defective product or part shall be the repair, or replacement
thereof as provided above. The laws on limitation of remedies or on consequential, incidental or spe-
cial damages may vary from state to state, so the above limitations may not apply in all cases.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEM-
BLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFAC-
TURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO
THE BUYER THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN
FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS
AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED
TECHNICIANS, AND NOT
BY THE BUYER. THE BUYER ASSUMES ALL RISKS AND LI-
ABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR
REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION
OF REPLACEMENT PARTS THERETO.
© Copyright 2012 WILMAR CORPORATION, P.O. Box 88259 Tukwila, WA 98138
