2009 Pontiac G5 2.2 Ecotec.
Just stopped running, cyl 1 30 psi compression, from there the compression went to 20,10 & 10. Timng chain looks tight and dead on, head gasket looks ok, valves arent bent. Why no compression then please help
Pontiac's G5 compact coupe made its U.S. debut in 2006, and has received only minor changes since then. The G5 is built on GM's Delta platform, which it shares with popular compacts like the Chevrolet Cobalt, Chevrolet HHR, and Saturn Ion. The G5 badge replaces the discontinued Sunfire coupe and competes with the Honda Civic, Scion tC, Volkswagen Rabbit, and Saturn Astra.
Although Pontiac markets the G5 as a sports coupe, reviewers agree that there are better performance choices in this segment. The G5 certainly looks the part and even speeds off the line nicely. The ride is relatively smooth throughout the speed range, and because of its size and modest power plant, the coupe also boasts strong fuel economy numbers. However, the G5 is hurt by an overall lack of driving refinement, unresponsive steering, and unsteady handling. Both G5 trims use an electronic power-steering system, versus the hydraulic setup found in most cars. Other shortcomings include low-quality interior materials, a bland cabin design, and a lack of interior storage space.
There are two trims for the 2009 Pontiac G5. The base model comes relatively well-equipped, with essentials like air-conditioning, full power accessories, and a 60/40-split-folding rear seat. Pontiac also includes some items typically not found on the base model of an entry-level car; satellite radio, a CD/MP3 player, an auxiliary audio jack, and remote keyless entry are also included. The GT trim adds 17-inch aluminum wheels, a sport-tuned suspension, a premium Pioneer audio system, and fog lamps. The options lists are extensive for both trims, as the base can be equipped with most of the GT's standard features, and both can add aesthetic enhancements like custom-colored interior lighting, a spoiler, and a body ground-effects package.
Each G5 trim gets its own power plant. The G5 base is powered by a 2.2-liter four cylinder, delivering 148 horsepower and 152 pound-feet of torque. The performance-oriented GT houses a 2.4-liter engine, bumping horsepower to 171 and torque to 167 pound-feet. Both engines are mated to a five-speed manual transmission, with a four-speed automatic available as an option. The G5's fuel economy is estimated at 24/33 mpg with the smaller engine and 22/31 mpg with the GT's mill.
Just stopped running, cyl 1 30 psi compression, from there the compression went to 20,10 & 10. Timng chain looks tight and dead on, head gasket looks ok, valves arent bent. Why no compression then please help
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Air Conditioning
Single front air conditioning zones
Airbags
Dual front airbags · Passenger airbag deactivation: occupant sensing deactivation · Rear side curtain airbags
Audio System
Antenna Type: mast · Auxiliary audio input: jack · Single disc in-Dash CD · MP3 player: CD MP3 Playback · Premium Brand: Pioneer · Pioneer premium brand speakers · AM/FM radio · XM-ready satellite radio · 1 subwoofer · Total Number of Speakers: 6
Brakes
ABS: 4-wheel · Front brake diameter: 10.7 · Front brake width: 0.94 · Front brakes: ventilated disc · Rear brake diameter: 9.1 · Rear brakes: drum
Comfort Features
Floor Mat Material: carpet · Floor Mats: front · Shift knob trim: leather · Steering wheel trim: leather
Convenience Features
Ashtray: with lighter · Center console: front console with armrest and storage · Cupholders: rear · Easy entry: manual rear seat · Multi-function remote: trunk release · One-touch windows: 1 · Power outlet(s): two 12V · Power steering: speed-proportional · Reading lights: front · Steering wheel: tilt-adjustable · Steering wheel mounted controls: audio and cruise controls · Storage: door pockets · Vanity mirrors: dual
Driver Seat
Adjustable lumbar support: manual · Manual adjustments: 4
Drivetrain
Axle ratio: 3.84
Engine
Battery: maintenance-free
Exterior Features
Door handle color: body-color · Exhaust tip color: stainless-steel · Front bumper color: body-color · Grille color: black · License plate bracket: front · Mirror color: body-color · Paint: special factory paint · Rear bumper color: body-color · Rear spoiler color: body-color
Header
Option Delete: Generic
Headrests
Front headrests: adjustable · Number of front headrests: 2 · Number of rear headrests: 2
Instrumentation
Warnings and reminders: coolant temperature warning
Lights
Headlights: auto delay off
Mirrors
Exterior mirrors: power · Inside rearview mirror: manual day/night
Passenger Seat
Manual Adjustments: 4
Rear Seats
Type: 60-40 split bench
Roof
Sunroof: tilt/slide
Safety
Child seat anchors: LATCH system
Seatbelts
Rear center seatbelt: 3-point · Seatbelt pretensioners: front
Seats
Driver seat manual adjustments: height · Front seat type: bucket · Rear headrests: adjustable · Rear seat folding: split · Upholstery: cloth
Security
Power door locks: anti-lockout
Spare Tire
Kit: inflator kit · Size: temporary
Steering
Steering ratio: 16.6 · Turns lock-to-lock: 3.6
Suspension
Front Arm Type: lower control arms · Front Shock Type: gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Rear Shock Type: gas shock absorbers · Rear Spring Type: coil springs · Rear Suspension Classification: semi-independent · Rear Suspension Type: torsion bar · Stabilizer bar(s): rear
Telematics
Phone wireless data link: Bluetooth · Satellite communications: OnStar
Tires
Type: all season
Tires and Rims
Wheels: aluminum
Wheels
Wheel covers: full
Windows
Front wipers: speed sensitive
Air Conditioning
Single front air conditioning zones
Airbags
Dual front airbags · Passenger airbag deactivation: occupant sensing deactivation · Front side curtain airbags
Audio System
Antenna Type: mast · USB auxiliary audio input · Single disc in-Dash CD · MP3 player: CD MP3 Playback · Premium Brand: Pioneer · AM/FM radio · Satellite Radio: SiriusXM · 1 subwoofer · Total Number of Speakers: 7
Brakes
ABS: 4-wheel · Front brake diameter: 11.6 · Front brake width: 1.02 · Front brakes: ventilated disc · Rear brake diameter: 10.6 · Rear brake width: 0.55 · Rear brakes: disc
Comfort Features
Floor Mat Material: carpet · Floor Mats: front · Shift knob trim: leather · Steering wheel trim: leather
Convenience Features
Ashtray: with lighter · Center console: front console with armrest and storage · Cupholders: rear · Easy entry: manual rear seat · Multi-function remote: trunk release · One-touch windows: 1 · Power outlet(s): two 12V · Power steering: speed-proportional · Reading lights: front · Steering wheel: tilt-adjustable · Steering wheel mounted controls: audio · Storage: door pockets · Vanity mirrors: dual
Driver Seat
Adjustable lumbar support: manual · Manual adjustments: 4
Drivetrain
Axle ratio: 3.84
Engine
Battery: maintenance-free
Exterior Features
Door handle color: body-color · Exhaust tip color: chrome · Front bumper color: body-color · Grille color: black · License plate bracket: front · Mirror color: body-color · Paint: special factory paint · Rear bumper color: body-color · Rear spoiler color: body-color
Header
Option Delete: Generic
Headrests
Front headrests: adjustable · Number of front headrests: 2 · Number of rear headrests: 2
Instrumentation
Warnings and reminders: low oil pressure
Lights
Headlights: Auto on
Mirrors
Exterior mirrors: power · Inside rearview mirror: manual day/night
Passenger Seat
Manual Adjustments: 4
Rear Seats
Type: 60-40 split bench
Roof
Sunroof: one-touch
Safety
Child seat anchors: LATCH system
Seatbelts
Rear center seatbelt: 3-point · Seatbelt pretensioners: front
Seats
Driver seat manual adjustments: height · Front seat type: bucket · Rear headrests: adjustable · Rear seat folding: split · Upholstery: cloth
Security
Power door locks: anti-lockout
Spare Tire
Kit: tire sealant · Size: temporary
Steering
Steering ratio: 16.6 · Turns lock-to-lock: 3.6
Suspension
Front Arm Type: lower control arms · Front Shock Type: gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Rear Shock Type: gas shock absorbers · Rear Spring Type: coil springs · Rear Suspension Classification: semi-independent · Rear Suspension Type: torsion bar · Stabilizer bar(s): front
Telematics
Phone wireless data link: Bluetooth · Satellite communications: OnStar
Tires
Type: all season
Tires and Rims
Wheels: painted aluminum
Windows
Front wipers: speed sensitive