Automotive Manual PDF

Installing spark plugs
Torque is one of the most critical aspects of spark plug installation. Torque directly affects the spark plugs’ ability to transfer heat out of the combustion chamber. A spark plug that is under-torqued will not be fully seated on the cylinder head, hence heat transfer will be slowed. This will tend to elevate combustion chamber temperatures to unsafe levels, and pre-ignition and detonation will usually follow. Serious engine damage is not far behind.
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Before beginning installation of your new shorty headers, you will need to first determine whether or not these shorty headers will fit your vehicle without additional modifications to your factory stock exhaust system. GM used several different styles of exhaust manifolds on the model year vehicles listed above.
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Full-Torque® thread repair inserts are made of hard anodized aluminum for spark plug holes in aluminum cylinder heads and steel, for cast iron heads. FFT-Style Deep Reach inserts match the Ford Triton 4.6, 5.4 and 6.8 liter engines. Inserts for aluminum heads are made of hard anodized aluminum for optimum heat transfer.
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The starter wire provides 12V directly to the starter or to a relay controlling starter. In some vehicles, it is necessary to power a cold start circuit. A cold start circuit will test exactly like a starter circuit, but it does not control the starter. Instead, the cold start circuit is used to prime the fuel injection system for starting when the vehicle is cold.
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For proper repair and maintenance a thorough familiarisation with this manual is important and it should always be kept in a handy place for quick and easy reference. All the contents of this manual, including drawing and specifications, are the latest available at the time of printing. As modifications affecting repair or maintenance occur, relevant information supplementary to this volume will be made available at Authorised Mazda dealers. This manual should be kept up-to-date. Mazda Motor Corporation reserves the right to alter the specifications and contents of this manual without obligation or advance notice.
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Some vehicles may experience difficulty starting (cranks no start). This may occur after driving the vehicle a short distance without engine reaching normal operating temperature. Examples: starting a vehicle and moving it to wash it, engine stall due to mis-application of clutch then restart. This commonly occurs at port facilities or dealer lots where vehicles are frequently started cold, moved for short distances and then turned off. This concern may also occur due to low cranking RPM during engine starting.
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TECHNICAL INFORMATION
Spark Output: The Enhancer Ignition System for the Honda 400EX produces a high output spark that is approximately double the stock spark output. This increased spark energy allows the use of richer fuel mixtures or even exotic fuel such as alcohol. The MSD Ignition will put out approximately 30,000 volts to the spark plug.
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Service Bulletin Subject: R1100/850 Model Throttle Cables Problem: Engine surges at constant speed. Difficult to adjust and balance the left and right throttle bodies. Cause: Differences in opening and closing of the throttle butterflies caused by friction in the throttle cable. Remedy: 1. Fit a low friction throttle cable. 2. Check the following to ensure optimum results: Ignition timing Spark plugs (FR 6DDC) type / condition (reference SI 2739 in Main Group 12) Valve clearances Correct Cat. code plug Check throttle housing inlet manifold for air leaks
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