1996 GMC Sierra engine miss

Have you ever had the injectors or fuel pressure regulator replaced? Those engines had problems with both, usually a problem in the A.M.

No I havent done either. I have only owned the truck for about 1 year and it had been well maintained before that.

[quote:3e28ef8459="matthew12"]I have a 1996 GMC Sierra 1500, Vortec 4300 engine, 5 spd standard transmission, 202500 km. Sometimes when it is wet and rainy or first thing in the morning until the engine warms up the engine will stutter a bit between 1,000 and 2,000 rpm. I have replaced the plugs and wires last week, and the distributor cap and rotor button were replaced last year (I had them out and they still look like new). It doesent feel like 1 cylinder is missing it feels like the whole engine is. However the engine light never comes on. Im wondering if it is either the coil, the oxygen sensor, or the EGR valve. If you could help me out with this it would be great. Thanks.[/quote:3e28ef8459]

[quote:a498da4fdb="marc z."] definitly not your egr it only works on highway speeds these engines almost always have a dead cylnder on the right hand side being # 8 or #6 causing the engine to skip it happened to me with a 305 and before i knew it the goes the mainbearing for that piston have compression check done when you 1st start it the morninig you can get one that will thread right in the plug loc. just get manual to find what your comp rate should be they are not going to be the same on every cylinder but the are pretty close on that cylinder cause it could be just may be a bad set of rings until they get hot and expand they will blow by and if possible have the valves on that cylinder checked also. good luck friend hope it works out for the better. [quote:a498da4fdb="matthew12"]I have a 1996 GMC Sierra 1500, Vortec 4300 engine, 5 spd standard transmission, 202500 km. Sometimes when it is wet and rainy or first thing in the morning until the engine warms up the engine will stutter a bit between 1,000 and 2,000 rpm. I have replaced the plugs and wires last week, and the distributor cap and rotor button were replaced last year (I had them out and they still look like new). It doesent feel like 1 cylinder is missing it feels like the whole engine is. However the engine light never comes on. Im wondering if it is either the coil, the oxygen sensor, or the EGR valve. If you could help me out with this it would be great. Thanks.[/quote:a498da4fdb][/quote:a498da4fdb]