ZR-1 Net Registry Forums - View Single Post - Slightly rough idle and a fouled plug on a low mileage 1990

Z51JEFF · 02-26-2018

I’d pull the plenum and replace the injectors,maybe the plug wires and coil packs
and do a check of all the vacuum lines. If you can do the work yourself it’s no big deal. I work on my cars so when the injectors failed,@8000 original miles there was never any question about who would be working on the car. At the time I didn’t have the service manual yet so I came over here,asked a ton of questions and took a lot of pictures. There a few parts of the process that can work your neveres but not difficult at all. Plugging in the ignition module both front and back and getting the vacuum lines plugged in is a small challenge. Marc Haibeck sells a very detailed video of the plenum pull that is very helpful.

02-26-2018	#5
Z51JEFF Join Date: Dec 2007 Location: Fremont, CA Posts: 3,092	Re: Slightly rough idle and a fouled plug on a low mileage 1990 I’d pull the plenum and replace the injectors,maybe the plug wires and coil packs and do a check of all the vacuum lines. If you can do the work yourself it’s no big deal. I work on my cars so when the injectors failed,@8000 original miles there was never any question about who would be working on the car. At the time I didn’t have the service manual yet so I came over here,asked a ton of questions and took a lot of pictures. There a few parts of the process that can work your neveres but not difficult at all. Plugging in the ignition module both front and back and getting the vacuum lines plugged in is a small challenge. Marc Haibeck sells a very detailed video of the plenum pull that is very helpful.