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Most of the vehicles always have issues with carbon build-up on the intake valves. Symptoms include Misfire codes, rough running, stumbling, and suspicious fuel trim numbers. But AUTOOL HTS558 is offering intake valve cleaning for most makes and models. Save time and money$$! No need to remove the cylinder head and valves to clean them. …

Before & After -BMW / MINI/VW intake valve—Walnut blasting intake valves cleaner–AUTOOL HTS558 Read More »