'98 Coil Packs (still trouble)

[SC_Heathen]

I have a 1998 Expy, with 297k on it. Had it for about 4 years. It recently started hesitating and acting exactly like it did when I previously had coil pack problems.


Twice before I had issues with the coil packs. First time the place I bought it from replaced a coil pack (unknown which) because it started hesitating like 2 days after I bought it. Second time I had a shop install a coil pack (can't remember which one.) Since then I've done research on them knowing it was a matter of time, and also, I wanted to install all 8 at once.

Last week it started hesitating again. I bought 8 coil packs and some dialectric grease. Yesterday I replaced 3 on passenger side and 2 on the driver side. I was not able to reach the one in the very back on passenger side. On the driver side, where I replaced the front 2, the fuel Pressure regulator prevented me from getting to the 3rd.

My question is; can I disconnect the fuel rail w/fuel pressure regulator from passenger side so that I can get to my other coil packs? I'm not sure what the ramifications are to disconnecting that, even if I install it right back (air in the fuel lines, fuel lines under pressure, etc.)

Also, being that I replaced 5 of 8 packs and I am still getting hesitation, what else should I be looking at? Should I just take it in to the mechanic?

 

[steelnewfie]

Could be the plugs too. You will keep blowing coils if your plugs are worn or out of spec. When was the last time your plugs were done? Then I'd check fuel filter. Then if still hesitation many guys recommend MAF/Throttle body clean. PCV valve might need replaced as well.