ZR-1 Net Registry Forums - View Single Post - 1990 ZR-1 Hesitation when full Power

Young1 · 01-10-2019

Marc's site has an article for testing injectors and operation of secondaries. His CD video presentation is great for plenum removal. Put clamps or zip ties on all vacuum and emission hoses. Pull coil tray and pull starter to shine up the solenoid copper contacts while you are in there. Test the electric solenoid vacuum valve. I had it go bad. Read everything on ZR1specialist site. I really think your secondaries are not functioning properly. Are they opening at the same time? Are they smooth and not jerky jerky. Are they opening 100 percent?
Keep in touch. Search and read the stickies here on the forum too.

01-10-2019	#4
Young1 Join Date: Sep 2016 Location: Ocala, FL Posts: 877	Re: 1990 ZR-1 Hesitation when full Power Marc's site has an article for testing injectors and operation of secondaries. His CD video presentation is great for plenum removal. Put clamps or zip ties on all vacuum and emission hoses. Pull coil tray and pull starter to shine up the solenoid copper contacts while you are in there. Test the electric solenoid vacuum valve. I had it go bad. Read everything on ZR1specialist site. I really think your secondaries are not functioning properly. Are they opening at the same time? Are they smooth and not jerky jerky. Are they opening 100 percent? Keep in touch. Search and read the stickies here on the forum too. __________________ Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much.