Buy 7.3 | Powerstroke Engine

: With the engine running, remove the oil fill cap and place it upside down over the hole. If it is blown off by pressure, it indicates excessive blow-by and potential internal wear.

: Often referred to as "OBS" (Old Body Style), these featured lower power ratings (starting at 215 hp / 425 lb-ft). buy 7.3 powerstroke engine

: Connectors can come loose or short out, causing rough idling or misfires. : With the engine running, remove the oil