{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": false,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": false,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": false,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": false,
    "zipPaymentFlag": "u",
    "hassleFreeReturn": false,
    "lifetimeReplacement": false,
    "cpn_off": false
}
1990 Chevrolet G20
1
0
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Price Match Guarantee
60-Day Returns
Lifetime Replacement
1990 Chevrolet G20

1990 Chevrolet G20 Spark Plugs

Refine by:
See All

Shop Catalog

Showing 1 - 15 of 33 results
Display item:
15
30
45
Sort by:
Professional Conventional Series Spark Plug, Sold individually
AC Delco®
Professional Conventional Series Spark Plug, Sold individually
Part Number: ACCR43TS
Guaranteed to Fit
$2.99
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Beauville 6 Cyl 4.3L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Sportvan 6 Cyl 4.3L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Chevy Van 6 Cyl 4.3L Original Equipment, Gap .035
Product Details
Notes : 5/8 in. hex size; Tapered seat styleSeries : Professional Conventional SeriesSpark Plug Code : CR43TSElectrode Tip Material : Nickel alloy Electrode TipQuantity Sold : Sold individuallyWarranty : 24-months or unlimited mile AC Delco limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 11.2 mm ReachGap Size : 0.035 in.Thread Size : 14 mm thread size
Professional Conventional Series Spark Plug, Set of 6
AC Delco®
Professional Conventional Series Spark Plug, Set of 6
Part Number: SET-ACCR43TS-6
Guaranteed to Fit
$22.49
Vehicle Fitment
  • 1990 Chevrolet G20 Chevy Van 6 Cyl 4.3L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Beauville 6 Cyl 4.3L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Sportvan 6 Cyl 4.3L Original Equipment, Gap .035
Product Details
Series : Professional Conventional SeriesSpark Plug Code : CR43TSElectrode Tip Material : Nickel alloy Electrode TipQuantity Sold : Set of 6Warranty : 24-months or unlimited mile AC Delco limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 11.2 mm ReachGap Size : 0.035 in.Thread Size : 14 mm thread size
Professional Conventional Series Spark Plug, Set of 8
AC Delco®
Professional Conventional Series Spark Plug, Set of 8
Part Number: SET-ACCR43TS-8
Guaranteed to Fit
$26.49
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L Original Equipment, Gap .035
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L Original Equipment, Gap .035
Product Details
Series : Professional Conventional SeriesSpark Plug Code : CR43TSElectrode Tip Material : Nickel alloy Electrode TipQuantity Sold : Set of 8Warranty : 24-months or unlimited mile AC Delco limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 11.2 mm ReachGap Size : 0.035 in.Thread Size : 14 mm thread size
OE Fine Wire Iridium Spark Plug Series Spark Plug, Sold individually
Bosch®
OE Fine Wire Iridium Spark Plug Series Spark Plug, Sold individually
Part Number: BS9659
Guaranteed to Fit
$14.49
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L
  • 1990 Chevrolet G20 Beauville 6 Cyl 4.3L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L
  • 1990 Chevrolet G20 Sportvan 6 Cyl 4.3L
  • 1990 Chevrolet G20 Chevy Van 6 Cyl 4.3L
Product Details
Series : OE Fine Wire Iridium Spark Plug SeriesSpark Plug Code : HR9BII33VElectrode Tip Material : Iridium/Platinum Electrode TipQuantity Sold : Sold individuallyWarranty : 1-year Bosch limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : European Vehicle PartsElectrode Core Material : Iridium Electrode CoreReach : 11 mm ReachGap Size : 1.3 mmHeat Range : 9Thread Size : 14 mm thread size
C-Cut Shorty Series Spark Plug, Set of 4
Accel®
C-Cut Shorty Series Spark Plug, Set of 4
Part Number: A350574S4
Guaranteed to Fit
$42.26
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L
Product Details
Notes : 5/8 in. hex size; Projected tip; Tapered seat styleSeries : C-Cut Shorty SeriesSpark Plug Code : 0574SElectrode Tip Material : Copper Electrode TipQuantity Sold : Set of 4Warranty : 90-day Accel limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 0.46 in. ReachGap Size : 0.035 in.Recommended Use : PerformanceHeat Range : 4Thread Size : 14 mm thread size
Professional Platinum Series Spark Plug, Sold individually
AC Delco®
Professional Platinum Series Spark Plug, Sold individually
Part Number: AC41-803
Guaranteed to Fit
$13.49
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L
  • 1990 Chevrolet G20 Beauville 6 Cyl 4.3L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L
  • 1990 Chevrolet G20 Sportvan 6 Cyl 4.3L
  • 1990 Chevrolet G20 Chevy Van 6 Cyl 4.3L
Product Details
Notes : 14 mm headSeries : Professional Platinum SeriesElectrode Tip Material : Platinum Electrode TipQuantity Sold : Sold individuallyWarranty : 7-year or unlimited mile AC Delco warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 11.2 mm ReachGap Size : 0.045 in.Thread Size : 14 mm thread size
Professional Platinum Series Spark Plug, Set of 6
AC Delco®
Professional Platinum Series Spark Plug, Set of 6
Part Number: SET-AC41-803-6
Guaranteed to Fit
$47.49
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 6 Cyl 4.3L
  • 1990 Chevrolet G20 Beauville 6 Cyl 4.3L
  • 1990 Chevrolet G20 Chevy Van 6 Cyl 4.3L
Product Details
Series : Professional Platinum SeriesElectrode Tip Material : Platinum Electrode TipQuantity Sold : Set of 6Warranty : 7-year or unlimited mile AC Delco warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 11.2 mm ReachGap Size : 0.045 in.Thread Size : 14 mm thread size
Professional Platinum Series Spark Plug, Set of 8
AC Delco®
Professional Platinum Series Spark Plug, Set of 8
Part Number: SET-AC41-803-8
Guaranteed to Fit
$59.99
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L
Product Details
Series : Professional Platinum SeriesElectrode Tip Material : Platinum Electrode TipQuantity Sold : Set of 8Warranty : 7-year or unlimited mile AC Delco warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 11.2 mm ReachGap Size : 0.045 in.Thread Size : 14 mm thread size
OE/Specialty Spark Plug Series Spark Plug, Sold individually
Bosch®
OE/Specialty Spark Plug Series Spark Plug, Sold individually
Part Number: BS7975
Guaranteed to Fit
$9.99
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L Gap 0.035 in.
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L Gap 0.035 in.
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L Gap 0.035 in.
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L Gap 0.035 in.
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L Gap 0.035 in.
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L Gap 0.035 in.
Product Details
Notes : 5/8 in. hex size; Non-projected tip; Removable nut terminal type; Tapered seat styleSeries : OE/Specialty Spark Plug SeriesSpark Plug Code : HR9BC+Electrode Tip Material : Nickel-yttrium Electrode TipQuantity Sold : Sold individuallyWarranty : 1-year Bosch limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : European Vehicle PartsElectrode Core Material : Copper Electrode CoreReach : 11.2 mm ReachGap Size : 0.9 mmHeat Range : 9Thread Size : 14 mm thread size
Platinum Series Spark Plug, Sold individually
Bosch®
Platinum Series Spark Plug, Sold individually
Part Number: BS6708
Guaranteed to Fit
$10.49
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 6 Cyl 4.3L
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L
  • 1990 Chevrolet G20 Beauville 6 Cyl 4.3L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L
  • 1990 Chevrolet G20 Chevy Van 6 Cyl 4.3L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L
Product Details
Notes : 1.25 mm Thread Pitch; 16 mm Hex Size; Tapered Seat Type; Solid Terminal Type; 0.6 mm Center Electrode Size; Fine Wire Type; Projected; (1) Standard; Taper-Cut Shape; With ResistorSeries : Platinum SeriesElectrode Tip Material : Nickel alloy Electrode TipQuantity Sold : Sold individuallyWarranty : 1-year Bosch limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : European Vehicle PartsElectrode Core Material : Platinum Electrode CoreReach : 11 mm ReachGap Size : 1.3 mmHeat Range : 9Thread Size : 14 mm
Iridium Series Spark Plug, Set of 4
MSD®
Iridium Series Spark Plug, Set of 4
Part Number: M4637224
Guaranteed to Fit
$40.99
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L
  • 1990 Chevrolet G20 Beauville 6 Cyl 4.3L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L
  • 1990 Chevrolet G20 Sportvan 6 Cyl 4.3L
  • 1990 Chevrolet G20 Chevy Van 6 Cyl 4.3L
Product Details
Notes : 5/8 in. hex size; Projected insulator type; Tapered seat style; Iridium power electrode configurationSeries : Iridium SeriesSpark Plug Code : 6IR5YElectrode Tip Material : Iridium Electrode TipQuantity Sold : Set of 4Warranty : 1-year MSD limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 11 mm ReachRecommended Use : PerformanceProduct Fit : Direct FitHeat Range : 5Thread Size : 14 mm thread size
HP Series Spark Plug, Set of 8
Accel®
HP Series Spark Plug, Set of 8
Part Number: A358179
Guaranteed to Fit
$48.30
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L 14mm Thread; .460 in. Reach; Heat Range 6; 8 Pack Of PN[0576];0.040 in. Plug Gap
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L 14mm Thread; .460 in. Reach; Heat Range 6; 8 Pack Of PN[0576];0.040 in. Plug Gap
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L 14mm Thread; .460 in. Reach; Heat Range 6; 8 Pack Of PN[0576];0.045 in. Plug Gap
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L 14mm Thread; .460 in. Reach; Heat Range 6; 8 Pack Of PN[0576];0.045 in. Plug Gap
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L 14mm Thread; .460 in. Reach; Heat Range 6; 8 Pack Of PN[0576];0.040 in. Plug Gap
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L 14mm Thread; .460 in. Reach; Heat Range 6; 8 Pack Of PN[0576];0.045 in. Plug Gap
Product Details
Series : HP SeriesQuantity Sold : Set of 8Warranty : 90-day Accel limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Recommended Use : Performance ReplacementProduct Fit : Direct Fit
U-Groove Series Spark Plug, Set of 8
Accel®
U-Groove Series Spark Plug, Set of 8
Part Number: A358199
Guaranteed to Fit
$52.75
Vehicle Fitment
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L 2 Of PN[0576S-4]
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L 2 Of PN[0576S-4]
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L 2 Of PN[0576S-4]
Product Details
Notes : U-GrooveSeries : U-Groove SeriesSpark Plug Code : 8199Electrode Tip Material : Copper Electrode TipQuantity Sold : Set of 8Warranty : 90-day Accel limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 0.46 in. ReachRecommended Use : PerformanceProduct Fit : Direct FitHeat Range : 6Thread Size : 14 mm thread size
C-Cut Series Spark Plug, Set of 8
Accel®
C-Cut Series Spark Plug, Set of 8
Part Number: A358198
Guaranteed to Fit
$58.01
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L 2 Of PN[0574S-4]
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L 2 Of PN[0574S-4]
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L 2 Of PN[0574S-4]
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L 2 Of PN[0574S-4]
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L 2 Of PN[0574S-4]
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L 2 Of PN[0574S-4]
Product Details
Notes : 5/8 in. hex size; Projected tip; Tapered seat styleSeries : C-Cut SeriesSpark Plug Code : 8198Electrode Tip Material : Copper Electrode TipQuantity Sold : Set of 8Warranty : 90-day Accel limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 0.46 in. ReachRecommended Use : PerformanceProduct Fit : Direct FitHeat Range : 4Thread Size : 14 mm thread size
Iridium Power Series Spark Plug, Sold individually
Denso®
Iridium Power Series Spark Plug, Sold individually
Part Number: NP5331
Guaranteed to Fit
$13.49
Vehicle Fitment
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.0L
  • 1990 Chevrolet G20 Beauville 6 Cyl 4.3L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.0L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.7L
  • 1990 Chevrolet G20 Chevy Van 8 Cyl 5.7L
  • 1990 Chevrolet G20 Beauville 8 Cyl 5.0L
  • 1990 Chevrolet G20 Sportvan 8 Cyl 5.7L
  • 1990 Chevrolet G20 Sportvan 6 Cyl 4.3L
  • 1990 Chevrolet G20 Chevy Van 6 Cyl 4.3L
Product Details
Notes : 5/8 in. hex size; Removable nut terminal type; Tapered seat style; Machine rolled threads; 0.4 mm center electrode; Iridium power electrode configurationSeries : Iridium Power SeriesSpark Plug Code : ITF20Quantity Sold : Sold individuallyWarranty : 1-year Denso limited WarrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 11.6 mm ReachGap Size : 1.1 mmHeat Range : 20Thread Size : 14 mm thread size
Page 1 of 3 | Showing 1 - 15 of 33 results

Top Rated Products

AC Delco Professional Conventional Series Spark Plug, Set of 8
$26.49( Review)
My parts were just as described, fast shipping, excellent seller, will definitely be See More
Mary W.
VERIFIED PURCHASER
AC Delco Professional Conventional Series Spark Plug, Sold individually
$2.99( Review)
A/C Delco are premium quality, always reliable spark plugs. The others may offer hotSee More
David W.
VERIFIED PURCHASER

Popular Products

Helpful Automotive Resources

A Short Course on Ignition Systems
A Short Course on Ignition SystemsLet’s see how this is done. The role of spark plugs is integral in the operation of the ignition systems as they ignite the air/fuel mixture—at exactly the right instant.
Why Won’t My Car Start?
Why Won’t My Car Start?Automotive professionals break down no-start situations into two separate categories: crank-no-start and no-crank-no-start.
P0354 Code: Ignition Coil “D” Primary/Secondary Circuit
P0354 Code: Ignition Coil “D” Primary/Secondary CircuitIn an engine with a COP ignition system, each cylinder comes with its own ignition coil that sits on top of the spark plug. The computer monitors the circuit between it and every ignition coil for faults. It will file a trouble code depending on the cylinder that experienced a
P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)
P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)The PCM may disable the misfiring cylinder or cylinders in order to prevent further damage to the engine. Code P0316 is often listed in addition to one or more of the P0300 series codes that are associated with the misfiring cylinder/s.