Plenum Pull...Parts List Varification...

[| 1990 ZR-1 |]

Originally Posted by Z51JEFF

I didnt see anybody comment about coolant.You might need to drain about a half gallon.It would be interesting to see what everybody thinks is the biggest pain in the *** about doing this job.Ive done it 6 times and the one part I dread the most is getting the spark unit plugged in.You can check the secondaries with the plenum off.You need to hook up the fuel rails,make sure it is completely tight,no leaks.There is a pink wire at the second plug at the ECM I think.With the key on,ground this wire and the secondaries will open.If you want to check this out let me know and Ill check out a DVD I have that has the info on the system checks.One other item thats important,clean out the drain hole at the rear of the valley.This is to keep from flooding the starter.Its a small hole maybe about the size of a 1/4-20 bolt.Its been awhile so not sure on the size.

Thanks Jeff. I read about draining the coolant. I also already checked the secondary falvew with the plenum on. They seem to work fine.

Should I replace the drive belt? I'm assuming it's a litte easier to do so with the plenum off.