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Performance Tool W87032 User Manual

Performance Tool W87032
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5
NOTE: Measurements and illustrations are for reference only.
Your test results may vary.
NORMAL ENGINE
1. With the vacuum pump connected to an intake manifold
vacuum port.
2. Start engine, bring to normal temperature and let idle.
3. Look at the needle’s movement on the gauge. At idle,
the needle should read 16-22 in. of Hg and hold steady.
This is your base line, indicating everything
functioning normal.
WEAK OR BROKEN VALVE SPRING
• A sign of weak valve springs are when the pointer on the
vacuum pumps gauge fluctuates rapidly between 10 and 21
in. of Hg at idle. As the engine speed increases the
fluctuations will increase too.
•
A broken valve spring will still cause the needle to fluctuate
rapidly at regular intervals. The difference can be seen every
time the cylinder fires and the valve attempts to close.
STICKING VALVE
• A valve that’s sticking will exhibit a rapid drop intermittently
from a normal pointer indication. This is because a sticking
valve or valves don’t always stick on each cycle of the
engine. To pin-point a sticking valve apply lightweight oil
directly to each valve
guide using a syringe with a fine tip. As
the oil coats the guide the sticking valve will temporarily
function normal. The needle on the gauge will be steady until
the oil burns off.
BURNED OR WORN-LEAKING VALVE
• At idle, the pointer on the gauge will drop then return to
normal. This would happen at regular interval. Every time the
cylinder fires with the bad valve it will cause the needle to
drop to a low reading. The needle will drop from 1 to 7 in. of
Hg, then return to a normal reading.
WORN VALVE GUIDES
• A worn valve guide lets air into the cylinder, this changes the
air/ fuel mixture. The needle on the gauge will run lower than
normal, approx. 3 in. of Hg and will fluctuate rapidly. When
you increase the speed of the engine the needle will stop
fluctuating.
BLOWN CYLINDER HEAD GASKET
• At idle, the needle will fluctuate from normal to a low reading.
Each time the affected cylinder reaches firing position the
needle will drop sharply. You should see about 10 in. of Hg
drop from normal, then return.
ENGINE DIAGNOSTICS
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Nornal
Leaking Intake Valve Timing
Ignition Timing
Misre
Clogged Exhaust
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Broken Valve Spring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Blown Head Gasket
Worn Valve Guides
Leaking Valve
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Fuel mixture
Leaking Piston Ring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Vacuum Solenoid
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Nornal
Leaking Intake Valve Timing
Ignition Timing
Misre
Clogged Exhaust
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Broken Valve Spring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Blown Head Gasket
Worn Valve Guides
Leaking Valve
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Fuel mixture
Leaking Piston Ring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Vacuum Solenoid
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Nornal
Leaking Intake Valve Timing
Ignition Timing
Misre
Clogged Exhaust
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Broken Valve Spring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Blown Head Gasket
Worn Valve Guides
Leaking Valve
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Fuel mixture
Leaking Piston Ring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Vacuum Solenoid
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Nornal
Leaking Intake Valve Timing
Ignition Timing
Misre
Clogged Exhaust
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Broken Valve Spring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Blown Head Gasket
Worn Valve Guides
Leaking Valve
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Fuel mixture
Leaking Piston Ring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Vacuum Solenoid
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Nornal
Leaking Intake Valve Timing
Ignition Timing
Misre
Clogged Exhaust
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Broken Valve Spring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Blown Head Gasket
Worn Valve Guides
Leaking Valve
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Fuel mixture
Leaking Piston Ring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Vacuum Solenoid
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Nornal
Leaking Intake Valve Timing
Ignition Timing
Misre
Clogged Exhaust
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Broken Valve Spring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Blown Head Gasket
Worn Valve Guides
Leaking Valve
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Fuel mixture
Leaking Piston Ring
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
Vacuum Solenoid
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge
0
5
10
15
20
25
30
Hg Hg
Vacuum
Gauge

Table of Contents

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Performance Tool W87032 Specifications

General IconGeneral
BrandPerformance Tool
ModelW87032
CategoryWater Pump
LanguageEnglish

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