spark plugs VOLVO S70 1998 Owners Manual

Other factors which decrease gas mileage are:
Worn or dirty spark plugs
Incorrect spark plug gap
Dirty air cleaner
Dirty engine oil and clogged oil filter
Dragging brakes
Incorrect front end alignment
Some of the above mentioned items and others are checked at the standard Maintenance Service intervals.
NOTE: ( D )rive or 5th gear (manual transmissions) should be used as often as possible to help improve fuel economy.

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Maintenance services
Your Volvo has passed several major inspections before being delivered to you, according to Volvo specifications. The
maintenance services outlined in this book should be performed as indicated. The extended maintenance service
intervals make it even more advisable to follow this program. Inspection and service should also be performed any
time a malfunction is observed or suspected. It is recommended that receipts for vehicle emission services be retained
in the event that questions arise concerning maintenance. See your "Maintenance Records Manual".
Applicable warranties - U.S.
In accordance with U.S. Federal Regulations, the following list of applicable U.S. warranties is provided. For Canadian
specification vehicles, see your separate warranty booklet.
New Car Limited Warranty
Parts and Accessories Limited Warranty
Corrosion Protection Limited Warranty
Seatbelt and Supplemental Restraint Systems Limited Warranty
Emission Design and Defect Warranty
Emission Performance Warranty
These are the Federal warranties; other warranties are provided as required by state law. Refer to your separate
Warranty booklet for detailed information concerning each of the warranties. pg. 118 Maintenance schedule
Maintenance schedule
A = Adjust (Correct if necessary) I = Inspect (Correct or Replace if necessary)
R = Replace L = Lubricate
Maintenance Operation thousand miles
(thousand km) 5³
(8)10
(16) 15³
(25)20
(32)25³
(40)30
(48)35³
(56)40
(64)45³
(72)50
(80)55³
(88)60²
(96)
EMISSION SYSTEM MAINTENANCE
Engine oil and filter¹ R³R R³RR³RR³RR³RR³R
Engine drive belt (accessory belt) I
Air cleaner filter RR
Spark plugs RR
Automatic transmission fluid IIIIII
Timing belt - all engines
NOTE: The oil should be changed at these intervals or after 750 hours of driving or after 12 months which ever occurs
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The engine is equipped with a multiport fuel injection system
Distributor ignition system
Firing order 1-2-4-5-3
Distributor ignition setting Not adjustable
Spark plugs Bosch FR 7 DC or Champion RC9YC
Spark plug gap 0.028" (0.7 mm)
Turbo -charged models: Champion RC8PYP (or equivalent)
Spark plug gap 0.03" (0.75 mm)
Tightening torque 18.4 ft. lbs. +/- 3.7 ft. lbs. (25 Nm +/- 5 Nm)
Front suspension
Spring strut suspension with integrated shock absorbers and control arm linked to the support frame. Power-assisted
rack and pinion steering. Safety type steering column.
The alignment specifications apply to an unladen car but include fuel, coolant, and spare wheel.
Toe-in measured on the wheel rims: 2.4 mm +/- 0.7 mm
Toe-in measured on tire sides: 2.9 +/- 0.9 mm
Rear Suspension
Delta-link individual rear-wheel suspension with longitudinal support arms, double link arms and track rods.
Toe-in measured on the tire sides: 4° +/- 10°
All specifications are subject to change without notice.

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