This video "SHOW" demonstrate the Buick (GM) 3800 series Engine ignition timing and firing order.A guild on how to replace Spark Plugs Wire properly for smooth Engine operation. Please view the Link below to have a insight on the Buick (GM) 3800 series engine camshaft timing: http://i73.photobucket.com/albums/i232/stevexperformance/3800rollertimingset.jpg http://i73.photobucket.com/albums/i232/stevexperformance/S1timingsetremove.jpg Timing cover Bolts order Plus three 10mm bolts on the oil pan:http://i73.photobucket.com/albums/i232/stevexperformance/buickGnfrontblock109.jpg Removal of Buick 3800 series Engine Harmonic balancer/dampener/crankshaft pulley: http://i73.photobucket.com/albums/i232/stevexperformance/S1crankpulleyremove.jpg http://i73.photobucket.com/albums/i232/stevexperformance/S1crankpulleyremove1.jpg Here is the Crankshaft Position Sensor: http://i73.photobucket.com/albums/i232/stevexperformance/S1cranksensorremove.jpg All Buick 3800 series specified engine timing are for supercharge and non-supercharger application series one and two. The engine ignition remain the same for the "ODD FIRE" Buick engine 3.8 liter,turbocharge and non turbocharge. Computer-Controlled Coil Ignition (C3I) The C3I system is used on V-6 engine built by Buick. The basic system contain a coil pack, an ignition module, and hall-effect sensor to determine crankshaft and camshaft position. These are three different C3I types, each of which can be identified by the shape of the coil pack. Type 1 - This version has all three coils molded into a single pack. If one coil malfuntions, the entire coil pack must be replaced. This system is used on 1984 and later turbocharged 3.8 liter V-6 engine with sequential fuel injection (SFI). Type 2 -  this version is similar to type 1, but each of the three coils is separate and can be replaced individually. This system is used on some 1986 and later 3.8 liter SFI V-6 engines. Type 3 - The coil pack of a type 3 system is similar to, and can be interchanged with, a type 1 coil pack. The module differs electronically, however, and the connector plugs are not compatible with components from other systems. The type 3 system is used on 1988 and later 3300 and 3800 V-6 engines. Direct Ignition System (DIS) Although DIS and C3I system operate similarly, they differ in at least one regard. In DIS, a reluctance sensor, or magnetic pickup, senses crankshaft position. This sensor is installed in the side of the engine block next to the crankshaft pulley. The 1993-97 3.1 liter engine (VIN M) and the 1996-97 3.4 liter engine (VIN E) use both a reluctance and hall-effect crank sensor.Computer-Controlled Coil Ignition (C3I) The C3I system is used on V-6 engine built by Buick. The basic system contain a coil pack, an ignition module, and hall-effect sensor to determine crankshaft and camshaft position. These are three different C3I types, each of which can be identified by the shape of the coil pack. Type 1 - This version has all three coils molded into a single pack. If one coil malfuntions, the entire coil pack must be replaced. This system is used on 1984 and later turbocharged 3.8 liter V-6 engine with sequential fuel injection (SFI). Type 2 -  this version is similar to type 1, but each of the three coils is separate and can be replaced individually. This system is used on some 1986 and later 3.8 liter SFI V-6 engines. Type 3 - The coil pack of a type 3 system is similar to, and can be interchanged with, a type 1 coil pack. The module differs electronically, however, and the connector plugs are not compatible with components from other systems. The type 3 system is used on 1988 and later 3300 and 3800 V-6 engines. Direct Ignition System (DIS) Although DIS and C3I system operate similarly, they differ in at least one regard. In DIS, a reluctance sensor, or magnetic pickup, senses crankshaft position. This sensor is installed in the side of the engine block next to the crankshaft pulley. The 1993-97 3.1 liter engine (VIN M) and the 1996-97 3.4 liter engine (VIN E) use both a reluctance and hall-effect crank sensor. TESTING FOR COILS: Primary winding.              Secondary winding.         C3I type 1.   0.35 to 1.5 ohms.           10 to 14 ohms.  C3I type 2.   0.35 to 1.5 ohms.            5 to 7 ohms.  C3I type 3.   0.35 to 1.5 ohms.            10 to 14 ohms. DIS and IDI   0.35 to 1.5 ohms.            5 to 7 ohms. Primary winding.              Secondary winding.         C3I type 1.   0.35 to 1.5 ohms.           10 to 14 ohms.  C3I type 2.   0.35 to 1.5 ohms.            5 to 7 ohms.  C3I type 3.   0.35 to 1.5 ohms.            10 to 14 ohms. DIS and IDI   0.35 to 1.5 ohms.            5 to 7 ohms.

• published: 25 Sep 2012
• views: 63153