Best Answer

Spray a little solvent around each sparkplug, then use compressed air to blow each one clean. That way you minimize the possibility of getting debris down the cylinder after the plugs are out. Mark the plug wires before removing them, usually a piece of tape with the number written on it or a wire marker with a printed number. Remove the plugs and note the color and general condition. If any of the plugs are black or oil fouled, that cylinder is burning a little oil. If any of the plug insulators are bright white, that cylinder is running "lean", and you need to find the vacuum leak and repair it. With all of the plugs out, run a compression test. Use a compression gauge in each cylinder and briefly crank the engine to make certain that all cylinders are functioning properly. You sould get about 110 to 120 PSI in each cylinder. If any are below 90, you probably have a valve going bad. Check the plug gap before replacing the plug. The proper gap setting should be written somewhere on a label under the hood. Make sure you reconnect the plug wires to the correct plug, then start the engine and drive off.

User Avatar

Wiki User

2006-04-23 14:00:14
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: How do you change spark plug wires in a GM pickup truck It is a sierra classic 1500 with a 350hp motor It has 8 cylinders and an automatic transmission It was made in 1995 It is fuel injected?
Write your answer...
Still have questions?
magnify glass
Related questions

What type of transmission is in a Chevy Caprice classic 1986?

The car has a 700R4 transmission. 4 speed automatic

Where can you find a list of classic cars with automatic transmissions?

The first fully automatic car available in the US was the 1940 Oldsmobile. From aprox 1950 many cars were available with your choice of an automatic transmission or standard transmission.

What transmission is in a 1991 Chevrolet Caprice?

The transmission in the 1991 Chevy Caprice is a 4 speed automatic with overdrive. This transmission is found in both the base and classic trims.

Does the 1998 Jeep Cherokee classic have a AW4 transmission?

Th e automatic transmission in a 1998 Jeep Cherokee, not a Grand Cherokee, is an AW4.

Is the 87 caprice classic fuel injected or carburetor?

It is throttle body fuel injected.

What transmission does a 1978 caprice classic have?

The Turbo-Hydramatic 350 (TH350) was standard and I think the only one available. 3 Speed automatic.

What automatic gearbox will fit in a classic vw beetle?

The "automatic gearbox" Volkswagen used to put in Beetles is an "autostick" transmission. It has a three-speed manual transmission connected to a vacuum-operated clutch and a torque converter. There's no clutch pedal but you still have to shift it.

What are the abbreviation for an 1999 ultra classic?

FLHTCU... FLHTCUI if fuel injected.

Is a 1997 ultra classic motorcycle fuel injected?

some yes, most no.

Is the 91 caprice classic carbuerated or efi?

TBI (throttle-body injected)

Which type of power steering fluid meets the specification for a 1979 Chevrolet Caprice Classic?

Dexron automatic transmission fluid or power steering fluid that you buy from the parts house.

How do you change a transmission screen on a 1992 caprice classic?


People also asked