How to replace spark plugs in an engine on Cadillac XLR?

The first step to replace spark plugs consists of shutting off the ignition while removing both sets of Ignition Coil assemblies. The engine needs to cool before work starts since removing hot spark plugs may lead to thread seizure that damages the Cylinder Head threads. After cleaning the Spark Plug recess area make sure to utilize a thread chaser before new plug installation since contaminating the head threads can obstruct proper location of new plugs. Check all spark plugs after extracting them from the engine. The correct engine components for the vehicle need to be used since improper plugs either hotter or colder than specified damage the engine. A round feeler gauge must check the gap of new and reconditioned spark plugs before installation since pre-set gaps might alter during handling and wrong gap settings may cause engine performance problems or engine damage. Compare the measurement of the Spark Plug gap to manufacturer specifications before making adjustments when needed. The installation requires a smooth thread insertion into the Cylinder Head until the plug achieves total seat position and requires a thread chaser to clean the way. Secure each Spark Plug into the engine by torquing it to 15 nm (11 lb ft) while putting back both Ignition Coil assemblies.

OEM Cadillac XLR Spark Plug

Ignition Spark Plug

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Cadillac XLR Spark Plug Part Number: 12592619
$7.34 MSRP: $13.10
You Save: $5.76 (44%)
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug,Glow
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Cadillac XLR | V | 8 Cyl 4.4 L GAS
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Cadillac XLR Spark Plug Part Number: 12571535
Product Specifications
- Replaces: 12561466
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009 Cadillac XLR | Platinum | 8 Cyl 4.6 L GAS
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Cadillac XLR Spark Plug Part Number: 12571533
Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2008 Cadillac XLR | Base, Platinum | 8 Cyl 4.6 L GAS

Cadillac XLR Spark Plug

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Extraordinary Spark Plug improves the performance & durability of Cadillac's luxury roadster car models to a great extent. To light the mixture of air and fuel inside the combustion chamber of the engines, Spark Plug is very vital since it guarantees the smooth running of the automobile. This Spark Plug suits Cadillac XLR models manufactured between 2003 and 2009, and it comes in different types; copper/nickel, platinum, double platinum, and iridium each with great endurance and performance as compared to the previous one. The Spark Plug is not only ideal in enhancing the kind of efficiency of the engine but also a factor to safety by avoiding cases of misfires that lead to acceleration. High voltage being supplied through an electric current delivery system and new age electrode materials are its prominent characteristics which set the Spark Plug apart from the other spark plugs available in the competitive automotive market with regards to superior reliability and performance. Since this specific Spark Plug is incorporated into the Cadillac XLR, a high-performance car with V8 Northstar engine, then the performance of this car is boosted, making it produce high levels of power and fast acceleration. Being a true achievement of Cadillac's pursuit of luxury and performance, the XLR Spark Plug is grandly a testament to elements Cadillac holds dear: quality and creativity, which have made a part of Cadillac XLR's legacy in the realm of roadster cars.

Cadillac XLR Spark Plug Parts Questions & Experts Answers

Spark Plug
12592619
Q: How to replace spark plugs in an engine on Cadillac XLR?
A:
The first step to replace spark plugs consists of shutting off the ignition while removing both sets of Ignition Coil assemblies. The engine needs to cool before work starts since removing hot spark plugs may lead to thread seizure that damages the Cylinder Head threads. After cleaning the Spark Plug recess area make sure to utilize a thread chaser before new plug installation since contaminating the head threads can obstruct proper location of new plugs. Check all spark plugs after extracting them from the engine. The correct engine components for the vehicle need to be used since improper plugs either hotter or colder than specified damage the engine. A round feeler gauge must check the gap of new and reconditioned spark plugs before installation since pre-set gaps might alter during handling and wrong gap settings may cause engine performance problems or engine damage. Compare the measurement of the Spark Plug gap to manufacturer specifications before making adjustments when needed. The installation requires a smooth thread insertion into the Cylinder Head until the plug achieves total seat position and requires a thread chaser to clean the way. Secure each Spark Plug into the engine by torquing it to 15 nm (11 lb ft) while putting back both Ignition Coil assemblies.