To find cylinder #1, you'll need to:
1. Consult a repair manual: A factory service manual or a reputable aftermarket repair manual specific to your 1999 Dodge Ram Van B3500 Maxi 5.2L CNG is your best bet. These manuals will have diagrams showing the cylinder numbering and firing order.
2. Look for casting marks: The engine block itself might have casting numbers or markings that indicate cylinder 1. These markings are often near the front of the engine or on the top of the engine block.
3. Check the distributor (if equipped): Older engines sometimes have a distributor where the rotor points to cylinder 1 when the engine is at top dead center (TDC) on the compression stroke for that cylinder. However, this 5.2L engine likely uses a different ignition system (like coil-on-plug), so this method is less likely to be reliable.
Without a specific repair manual for your vehicle's exact engine, determining cylinder #1 definitively is difficult. Incorrect identification could lead to serious problems when performing maintenance or repairs. Always consult a proper repair manual before attempting any engine work.
